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 <drm/drmP.h>
  34 #include "intel_drv.h"
  35 #include "intel_ringbuffer.h"
  36 #include <drm/i915_drm.h>
  37 #include "i915_drv.h"
  38
  39 #define DRM_I915_RING_DEBUG 1
  40
  41
  42 #if defined(CONFIG_DEBUG_FS)
  43
  44 enum {
  45         ACTIVE_LIST,
  46         INACTIVE_LIST,
  47         PINNED_LIST,
  48 };
  49
  50 static const char *yesno(int v)
  51 {
  52         return v ? "yes" : "no";
  53 }
  54
  55 static int i915_capabilities(struct seq_file *m, void *data)
  56 {
  57         struct drm_info_node *node = (struct drm_info_node *) m->private;
  58         struct drm_device *dev = node->minor->dev;
  59         const struct intel_device_info *info = INTEL_INFO(dev);
  60
  61         seq_printf(m, "gen: %d\n", info->gen);
  62         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  63 #define DEV_INFO_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  64 #define DEV_INFO_SEP ;
  65         DEV_INFO_FLAGS;
  66 #undef DEV_INFO_FLAG
  67 #undef DEV_INFO_SEP
  68
  69         return 0;
  70 }
  71
  72 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  73 {
  74         if (obj->user_pin_count > 0)
  75                 return "P";
  76         else if (obj->pin_count > 0)
  77                 return "p";
  78         else
  79                 return " ";
  80 }
  81
  82 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
  83 {
  84         switch (obj->tiling_mode) {
  85         default:
  86         case I915_TILING_NONE: return " ";
  87         case I915_TILING_X: return "X";
  88         case I915_TILING_Y: return "Y";
  89         }
  90 }
  91
  92 static const char *cache_level_str(int type)
  93 {
  94         switch (type) {
  95         case I915_CACHE_NONE: return " uncached";
  96         case I915_CACHE_LLC: return " snooped (LLC)";
  97         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
  98         default: return "";
  99         }
 100 }
 101
 102 static void
 103 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 104 {
 105         seq_printf(m, "%p: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s",
 106                    &obj->base,
 107                    get_pin_flag(obj),
 108                    get_tiling_flag(obj),
 109                    obj->base.size / 1024,
 110                    obj->base.read_domains,
 111                    obj->base.write_domain,
 112                    obj->last_read_seqno,
 113                    obj->last_write_seqno,
 114                    obj->last_fenced_seqno,
 115                    cache_level_str(obj->cache_level),
 116                    obj->dirty ? " dirty" : "",
 117                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 118         if (obj->base.name)
 119                 seq_printf(m, " (name: %d)", obj->base.name);
 120         if (obj->pin_count)
 121                 seq_printf(m, " (pinned x %d)", obj->pin_count);
 122         if (obj->fence_reg != I915_FENCE_REG_NONE)
 123                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 124         if (obj->gtt_space != NULL)
 125                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 126                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 127         if (obj->stolen)
 128                 seq_printf(m, " (stolen: %08lx)", obj->stolen->start);
 129         if (obj->pin_mappable || obj->fault_mappable) {
 130                 char s[3], *t = s;
 131                 if (obj->pin_mappable)
 132                         *t++ = 'p';
 133                 if (obj->fault_mappable)
 134                         *t++ = 'f';
 135                 *t = '\0';
 136                 seq_printf(m, " (%s mappable)", s);
 137         }
 138         if (obj->ring != NULL)
 139                 seq_printf(m, " (%s)", obj->ring->name);
 140 }
 141
 142 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 143 {
 144         struct drm_info_node *node = (struct drm_info_node *) m->private;
 145         uintptr_t list = (uintptr_t) node->info_ent->data;
 146         struct list_head *head;
 147         struct drm_device *dev = node->minor->dev;
 148         drm_i915_private_t *dev_priv = dev->dev_private;
 149         struct drm_i915_gem_object *obj;
 150         size_t total_obj_size, total_gtt_size;
 151         int count, ret;
 152
 153         ret = mutex_lock_interruptible(&dev->struct_mutex);
 154         if (ret)
 155                 return ret;
 156
 157         switch (list) {
 158         case ACTIVE_LIST:
 159                 seq_printf(m, "Active:\n");
 160                 head = &dev_priv->mm.active_list;
 161                 break;
 162         case INACTIVE_LIST:
 163                 seq_printf(m, "Inactive:\n");
 164                 head = &dev_priv->mm.inactive_list;
 165                 break;
 166         default:
 167                 mutex_unlock(&dev->struct_mutex);
 168                 return -EINVAL;
 169         }
 170
 171         total_obj_size = total_gtt_size = count = 0;
 172         list_for_each_entry(obj, head, mm_list) {
 173                 seq_printf(m, "   ");
 174                 describe_obj(m, obj);
 175                 seq_printf(m, "\n");
 176                 total_obj_size += obj->base.size;
 177                 total_gtt_size += obj->gtt_space->size;
 178                 count++;
 179         }
 180         mutex_unlock(&dev->struct_mutex);
 181
 182         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 183                    count, total_obj_size, total_gtt_size);
 184         return 0;
 185 }
 186
 187 #define count_objects(list, member) do { \
 188         list_for_each_entry(obj, list, member) { \
 189                 size += obj->gtt_space->size; \
 190                 ++count; \
 191                 if (obj->map_and_fenceable) { \
 192                         mappable_size += obj->gtt_space->size; \
 193                         ++mappable_count; \
 194                 } \
 195         } \
 196 } while (0)
 197
 198 static int i915_gem_object_info(struct seq_file *m, void* data)
 199 {
 200         struct drm_info_node *node = (struct drm_info_node *) m->private;
 201         struct drm_device *dev = node->minor->dev;
 202         struct drm_i915_private *dev_priv = dev->dev_private;
 203         u32 count, mappable_count, purgeable_count;
 204         size_t size, mappable_size, purgeable_size;
 205         struct drm_i915_gem_object *obj;
 206         int ret;
 207
 208         ret = mutex_lock_interruptible(&dev->struct_mutex);
 209         if (ret)
 210                 return ret;
 211
 212         seq_printf(m, "%u objects, %zu bytes\n",
 213                    dev_priv->mm.object_count,
 214                    dev_priv->mm.object_memory);
 215
 216         size = count = mappable_size = mappable_count = 0;
 217         count_objects(&dev_priv->mm.bound_list, gtt_list);
 218         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 219                    count, mappable_count, size, mappable_size);
 220
 221         size = count = mappable_size = mappable_count = 0;
 222         count_objects(&dev_priv->mm.active_list, mm_list);
 223         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 224                    count, mappable_count, size, mappable_size);
 225
 226         size = count = mappable_size = mappable_count = 0;
 227         count_objects(&dev_priv->mm.inactive_list, mm_list);
 228         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 229                    count, mappable_count, size, mappable_size);
 230
 231         size = count = purgeable_size = purgeable_count = 0;
 232         list_for_each_entry(obj, &dev_priv->mm.unbound_list, gtt_list) {
 233                 size += obj->base.size, ++count;
 234                 if (obj->madv == I915_MADV_DONTNEED)
 235                         purgeable_size += obj->base.size, ++purgeable_count;
 236         }
 237         seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
 238
 239         size = count = mappable_size = mappable_count = 0;
 240         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 241                 if (obj->fault_mappable) {
 242                         size += obj->gtt_space->size;
 243                         ++count;
 244                 }
 245                 if (obj->pin_mappable) {
 246                         mappable_size += obj->gtt_space->size;
 247                         ++mappable_count;
 248                 }
 249                 if (obj->madv == I915_MADV_DONTNEED) {
 250                         purgeable_size += obj->base.size;
 251                         ++purgeable_count;
 252                 }
 253         }
 254         seq_printf(m, "%u purgeable objects, %zu bytes\n",
 255                    purgeable_count, purgeable_size);
 256         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 257                    mappable_count, mappable_size);
 258         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 259                    count, size);
 260
 261         seq_printf(m, "%zu [%zu] gtt total\n",
 262                    dev_priv->gtt.total,
 263                    dev_priv->gtt.mappable_end - dev_priv->gtt.start);
 264
 265         mutex_unlock(&dev->struct_mutex);
 266
 267         return 0;
 268 }
 269
 270 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 271 {
 272         struct drm_info_node *node = (struct drm_info_node *) m->private;
 273         struct drm_device *dev = node->minor->dev;
 274         uintptr_t list = (uintptr_t) node->info_ent->data;
 275         struct drm_i915_private *dev_priv = dev->dev_private;
 276         struct drm_i915_gem_object *obj;
 277         size_t total_obj_size, total_gtt_size;
 278         int count, ret;
 279
 280         ret = mutex_lock_interruptible(&dev->struct_mutex);
 281         if (ret)
 282                 return ret;
 283
 284         total_obj_size = total_gtt_size = count = 0;
 285         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 286                 if (list == PINNED_LIST && obj->pin_count == 0)
 287                         continue;
 288
 289                 seq_printf(m, "   ");
 290                 describe_obj(m, obj);
 291                 seq_printf(m, "\n");
 292                 total_obj_size += obj->base.size;
 293                 total_gtt_size += obj->gtt_space->size;
 294                 count++;
 295         }
 296
 297         mutex_unlock(&dev->struct_mutex);
 298
 299         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 300                    count, total_obj_size, total_gtt_size);
 301
 302         return 0;
 303 }
 304
 305 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 306 {
 307         struct drm_info_node *node = (struct drm_info_node *) m->private;
 308         struct drm_device *dev = node->minor->dev;
 309         unsigned long flags;
 310         struct intel_crtc *crtc;
 311
 312         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 313                 const char pipe = pipe_name(crtc->pipe);
 314                 const char plane = plane_name(crtc->plane);
 315                 struct intel_unpin_work *work;
 316
 317                 spin_lock_irqsave(&dev->event_lock, flags);
 318                 work = crtc->unpin_work;
 319                 if (work == NULL) {
 320                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 321                                    pipe, plane);
 322                 } else {
 323                         if (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
 324                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 325                                            pipe, plane);
 326                         } else {
 327                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 328                                            pipe, plane);
 329                         }
 330                         if (work->enable_stall_check)
 331                                 seq_printf(m, "Stall check enabled, ");
 332                         else
 333                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 334                         seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
 335
 336                         if (work->old_fb_obj) {
 337                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 338                                 if (obj)
 339                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 340                         }
 341                         if (work->pending_flip_obj) {
 342                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 343                                 if (obj)
 344                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 345                         }
 346                 }
 347                 spin_unlock_irqrestore(&dev->event_lock, flags);
 348         }
 349
 350         return 0;
 351 }
 352
 353 static int i915_gem_request_info(struct seq_file *m, void *data)
 354 {
 355         struct drm_info_node *node = (struct drm_info_node *) m->private;
 356         struct drm_device *dev = node->minor->dev;
 357         drm_i915_private_t *dev_priv = dev->dev_private;
 358         struct intel_ring_buffer *ring;
 359         struct drm_i915_gem_request *gem_request;
 360         int ret, count, i;
 361
 362         ret = mutex_lock_interruptible(&dev->struct_mutex);
 363         if (ret)
 364                 return ret;
 365
 366         count = 0;
 367         for_each_ring(ring, dev_priv, i) {
 368                 if (list_empty(&ring->request_list))
 369                         continue;
 370
 371                 seq_printf(m, "%s requests:\n", ring->name);
 372                 list_for_each_entry(gem_request,
 373                                     &ring->request_list,
 374                                     list) {
 375                         seq_printf(m, "    %d @ %d\n",
 376                                    gem_request->seqno,
 377                                    (int) (jiffies - gem_request->emitted_jiffies));
 378                 }
 379                 count++;
 380         }
 381         mutex_unlock(&dev->struct_mutex);
 382
 383         if (count == 0)
 384                 seq_printf(m, "No requests\n");
 385
 386         return 0;
 387 }
 388
 389 static void i915_ring_seqno_info(struct seq_file *m,
 390                                  struct intel_ring_buffer *ring)
 391 {
 392         if (ring->get_seqno) {
 393                 seq_printf(m, "Current sequence (%s): %u\n",
 394                            ring->name, ring->get_seqno(ring, false));
 395         }
 396 }
 397
 398 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 399 {
 400         struct drm_info_node *node = (struct drm_info_node *) m->private;
 401         struct drm_device *dev = node->minor->dev;
 402         drm_i915_private_t *dev_priv = dev->dev_private;
 403         struct intel_ring_buffer *ring;
 404         int ret, i;
 405
 406         ret = mutex_lock_interruptible(&dev->struct_mutex);
 407         if (ret)
 408                 return ret;
 409
 410         for_each_ring(ring, dev_priv, i)
 411                 i915_ring_seqno_info(m, ring);
 412
 413         mutex_unlock(&dev->struct_mutex);
 414
 415         return 0;
 416 }
 417
 418
 419 static int i915_interrupt_info(struct seq_file *m, void *data)
 420 {
 421         struct drm_info_node *node = (struct drm_info_node *) m->private;
 422         struct drm_device *dev = node->minor->dev;
 423         drm_i915_private_t *dev_priv = dev->dev_private;
 424         struct intel_ring_buffer *ring;
 425         int ret, i, pipe;
 426
 427         ret = mutex_lock_interruptible(&dev->struct_mutex);
 428         if (ret)
 429                 return ret;
 430
 431         if (IS_VALLEYVIEW(dev)) {
 432                 seq_printf(m, "Display IER:\t%08x\n",
 433                            I915_READ(VLV_IER));
 434                 seq_printf(m, "Display IIR:\t%08x\n",
 435                            I915_READ(VLV_IIR));
 436                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 437                            I915_READ(VLV_IIR_RW));
 438                 seq_printf(m, "Display IMR:\t%08x\n",
 439                            I915_READ(VLV_IMR));
 440                 for_each_pipe(pipe)
 441                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 442                                    pipe_name(pipe),
 443                                    I915_READ(PIPESTAT(pipe)));
 444
 445                 seq_printf(m, "Master IER:\t%08x\n",
 446                            I915_READ(VLV_MASTER_IER));
 447
 448                 seq_printf(m, "Render IER:\t%08x\n",
 449                            I915_READ(GTIER));
 450                 seq_printf(m, "Render IIR:\t%08x\n",
 451                            I915_READ(GTIIR));
 452                 seq_printf(m, "Render IMR:\t%08x\n",
 453                            I915_READ(GTIMR));
 454
 455                 seq_printf(m, "PM IER:\t\t%08x\n",
 456                            I915_READ(GEN6_PMIER));
 457                 seq_printf(m, "PM IIR:\t\t%08x\n",
 458                            I915_READ(GEN6_PMIIR));
 459                 seq_printf(m, "PM IMR:\t\t%08x\n",
 460                            I915_READ(GEN6_PMIMR));
 461
 462                 seq_printf(m, "Port hotplug:\t%08x\n",
 463                            I915_READ(PORT_HOTPLUG_EN));
 464                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 465                            I915_READ(VLV_DPFLIPSTAT));
 466                 seq_printf(m, "DPINVGTT:\t%08x\n",
 467                            I915_READ(DPINVGTT));
 468
 469         } else 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_each_ring(ring, dev_priv, i) {
 503                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 504                         seq_printf(m,
 505                                    "Graphics Interrupt mask (%s):       %08x\n",
 506                                    ring->name, I915_READ_IMR(ring));
 507                 }
 508                 i915_ring_seqno_info(m, ring);
 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, "Fence %d, pin count = %d, object = ",
 532                            i, dev_priv->fence_regs[i].pin_count);
 533                 if (obj == NULL)
 534                         seq_printf(m, "unused");
 535                 else
 536                         describe_obj(m, obj);
 537                 seq_printf(m, "\n");
 538         }
 539
 540         mutex_unlock(&dev->struct_mutex);
 541         return 0;
 542 }
 543
 544 static int i915_hws_info(struct seq_file *m, void *data)
 545 {
 546         struct drm_info_node *node = (struct drm_info_node *) m->private;
 547         struct drm_device *dev = node->minor->dev;
 548         drm_i915_private_t *dev_priv = dev->dev_private;
 549         struct intel_ring_buffer *ring;
 550         const u32 *hws;
 551         int i;
 552
 553         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 554         hws = ring->status_page.page_addr;
 555         if (hws == NULL)
 556                 return 0;
 557
 558         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 559                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 560                            i * 4,
 561                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 562         }
 563         return 0;
 564 }
 565
 566 static const char *ring_str(int ring)
 567 {
 568         switch (ring) {
 569         case RCS: return "render";
 570         case VCS: return "bsd";
 571         case BCS: return "blt";
 572         default: return "";
 573         }
 574 }
 575
 576 static const char *pin_flag(int pinned)
 577 {
 578         if (pinned > 0)
 579                 return " P";
 580         else if (pinned < 0)
 581                 return " p";
 582         else
 583                 return "";
 584 }
 585
 586 static const char *tiling_flag(int tiling)
 587 {
 588         switch (tiling) {
 589         default:
 590         case I915_TILING_NONE: return "";
 591         case I915_TILING_X: return " X";
 592         case I915_TILING_Y: return " Y";
 593         }
 594 }
 595
 596 static const char *dirty_flag(int dirty)
 597 {
 598         return dirty ? " dirty" : "";
 599 }
 600
 601 static const char *purgeable_flag(int purgeable)
 602 {
 603         return purgeable ? " purgeable" : "";
 604 }
 605
 606 static void print_error_buffers(struct seq_file *m,
 607                                 const char *name,
 608                                 struct drm_i915_error_buffer *err,
 609                                 int count)
 610 {
 611         seq_printf(m, "%s [%d]:\n", name, count);
 612
 613         while (count--) {
 614                 seq_printf(m, "  %08x %8u %02x %02x %x %x%s%s%s%s%s%s%s",
 615                            err->gtt_offset,
 616                            err->size,
 617                            err->read_domains,
 618                            err->write_domain,
 619                            err->rseqno, err->wseqno,
 620                            pin_flag(err->pinned),
 621                            tiling_flag(err->tiling),
 622                            dirty_flag(err->dirty),
 623                            purgeable_flag(err->purgeable),
 624                            err->ring != -1 ? " " : "",
 625                            ring_str(err->ring),
 626                            cache_level_str(err->cache_level));
 627
 628                 if (err->name)
 629                         seq_printf(m, " (name: %d)", err->name);
 630                 if (err->fence_reg != I915_FENCE_REG_NONE)
 631                         seq_printf(m, " (fence: %d)", err->fence_reg);
 632
 633                 seq_printf(m, "\n");
 634                 err++;
 635         }
 636 }
 637
 638 static void i915_ring_error_state(struct seq_file *m,
 639                                   struct drm_device *dev,
 640                                   struct drm_i915_error_state *error,
 641                                   unsigned ring)
 642 {
 643         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
 644         seq_printf(m, "%s command stream:\n", ring_str(ring));
 645         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 646         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 647         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 648         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 649         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 650         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 651         if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
 652                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 653
 654         if (INTEL_INFO(dev)->gen >= 4)
 655                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 656         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 657         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 658         if (INTEL_INFO(dev)->gen >= 6) {
 659                 seq_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
 660                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 661                 seq_printf(m, "  SYNC_0: 0x%08x [last synced 0x%08x]\n",
 662                            error->semaphore_mboxes[ring][0],
 663                            error->semaphore_seqno[ring][0]);
 664                 seq_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
 665                            error->semaphore_mboxes[ring][1],
 666                            error->semaphore_seqno[ring][1]);
 667         }
 668         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 669         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
 670         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 671         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 672 }
 673
 674 struct i915_error_state_file_priv {
 675         struct drm_device *dev;
 676         struct drm_i915_error_state *error;
 677 };
 678
 679 static int i915_error_state(struct seq_file *m, void *unused)
 680 {
 681         struct i915_error_state_file_priv *error_priv = m->private;
 682         struct drm_device *dev = error_priv->dev;
 683         drm_i915_private_t *dev_priv = dev->dev_private;
 684         struct drm_i915_error_state *error = error_priv->error;
 685         struct intel_ring_buffer *ring;
 686         int i, j, page, offset, elt;
 687
 688         if (!error) {
 689                 seq_printf(m, "no error state collected\n");
 690                 return 0;
 691         }
 692
 693         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 694                    error->time.tv_usec);
 695         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 696         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 697         seq_printf(m, "IER: 0x%08x\n", error->ier);
 698         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 699         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
 700
 701         for (i = 0; i < dev_priv->num_fence_regs; i++)
 702                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 703
 704         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
 705                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
 706
 707         if (INTEL_INFO(dev)->gen >= 6) {
 708                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 709                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 710         }
 711
 712         if (INTEL_INFO(dev)->gen == 7)
 713                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 714
 715         for_each_ring(ring, dev_priv, i)
 716                 i915_ring_error_state(m, dev, error, i);
 717
 718         if (error->active_bo)
 719                 print_error_buffers(m, "Active",
 720                                     error->active_bo,
 721                                     error->active_bo_count);
 722
 723         if (error->pinned_bo)
 724                 print_error_buffers(m, "Pinned",
 725                                     error->pinned_bo,
 726                                     error->pinned_bo_count);
 727
 728         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 729                 struct drm_i915_error_object *obj;
 730
 731                 if ((obj = error->ring[i].batchbuffer)) {
 732                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 733                                    dev_priv->ring[i].name,
 734                                    obj->gtt_offset);
 735                         offset = 0;
 736                         for (page = 0; page < obj->page_count; page++) {
 737                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 738                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 739                                         offset += 4;
 740                                 }
 741                         }
 742                 }
 743
 744                 if (error->ring[i].num_requests) {
 745                         seq_printf(m, "%s --- %d requests\n",
 746                                    dev_priv->ring[i].name,
 747                                    error->ring[i].num_requests);
 748                         for (j = 0; j < error->ring[i].num_requests; j++) {
 749                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 750                                            error->ring[i].requests[j].seqno,
 751                                            error->ring[i].requests[j].jiffies,
 752                                            error->ring[i].requests[j].tail);
 753                         }
 754                 }
 755
 756                 if ((obj = error->ring[i].ringbuffer)) {
 757                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 758                                    dev_priv->ring[i].name,
 759                                    obj->gtt_offset);
 760                         offset = 0;
 761                         for (page = 0; page < obj->page_count; page++) {
 762                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 763                                         seq_printf(m, "%08x :  %08x\n",
 764                                                    offset,
 765                                                    obj->pages[page][elt]);
 766                                         offset += 4;
 767                                 }
 768                         }
 769                 }
 770         }
 771
 772         if (error->overlay)
 773                 intel_overlay_print_error_state(m, error->overlay);
 774
 775         if (error->display)
 776                 intel_display_print_error_state(m, dev, error->display);
 777
 778         return 0;
 779 }
 780
 781 static ssize_t
 782 i915_error_state_write(struct file *filp,
 783                        const char __user *ubuf,
 784                        size_t cnt,
 785                        loff_t *ppos)
 786 {
 787         struct seq_file *m = filp->private_data;
 788         struct i915_error_state_file_priv *error_priv = m->private;
 789         struct drm_device *dev = error_priv->dev;
 790         int ret;
 791
 792         DRM_DEBUG_DRIVER("Resetting error state\n");
 793
 794         ret = mutex_lock_interruptible(&dev->struct_mutex);
 795         if (ret)
 796                 return ret;
 797
 798         i915_destroy_error_state(dev);
 799         mutex_unlock(&dev->struct_mutex);
 800
 801         return cnt;
 802 }
 803
 804 static int i915_error_state_open(struct inode *inode, struct file *file)
 805 {
 806         struct drm_device *dev = inode->i_private;
 807         drm_i915_private_t *dev_priv = dev->dev_private;
 808         struct i915_error_state_file_priv *error_priv;
 809         unsigned long flags;
 810
 811         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 812         if (!error_priv)
 813                 return -ENOMEM;
 814
 815         error_priv->dev = dev;
 816
 817         spin_lock_irqsave(&dev_priv->error_lock, flags);
 818         error_priv->error = dev_priv->first_error;
 819         if (error_priv->error)
 820                 kref_get(&error_priv->error->ref);
 821         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 822
 823         return single_open(file, i915_error_state, error_priv);
 824 }
 825
 826 static int i915_error_state_release(struct inode *inode, struct file *file)
 827 {
 828         struct seq_file *m = file->private_data;
 829         struct i915_error_state_file_priv *error_priv = m->private;
 830
 831         if (error_priv->error)
 832                 kref_put(&error_priv->error->ref, i915_error_state_free);
 833         kfree(error_priv);
 834
 835         return single_release(inode, file);
 836 }
 837
 838 static const struct file_operations i915_error_state_fops = {
 839         .owner = THIS_MODULE,
 840         .open = i915_error_state_open,
 841         .read = seq_read,
 842         .write = i915_error_state_write,
 843         .llseek = default_llseek,
 844         .release = i915_error_state_release,
 845 };
 846
 847 static ssize_t
 848 i915_next_seqno_read(struct file *filp,
 849                  char __user *ubuf,
 850                  size_t max,
 851                  loff_t *ppos)
 852 {
 853         struct drm_device *dev = filp->private_data;
 854         drm_i915_private_t *dev_priv = dev->dev_private;
 855         char buf[80];
 856         int len;
 857         int ret;
 858
 859         ret = mutex_lock_interruptible(&dev->struct_mutex);
 860         if (ret)
 861                 return ret;
 862
 863         len = snprintf(buf, sizeof(buf),
 864                        "next_seqno :  0x%x\n",
 865                        dev_priv->next_seqno);
 866
 867         mutex_unlock(&dev->struct_mutex);
 868
 869         if (len > sizeof(buf))
 870                 len = sizeof(buf);
 871
 872         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 873 }
 874
 875 static ssize_t
 876 i915_next_seqno_write(struct file *filp,
 877                       const char __user *ubuf,
 878                       size_t cnt,
 879                       loff_t *ppos)
 880 {
 881         struct drm_device *dev = filp->private_data;
 882         char buf[20];
 883         u32 val = 1;
 884         int ret;
 885
 886         if (cnt > 0) {
 887                 if (cnt > sizeof(buf) - 1)
 888                         return -EINVAL;
 889
 890                 if (copy_from_user(buf, ubuf, cnt))
 891                         return -EFAULT;
 892                 buf[cnt] = 0;
 893
 894                 ret = kstrtouint(buf, 0, &val);
 895                 if (ret < 0)
 896                         return ret;
 897         }
 898
 899         ret = mutex_lock_interruptible(&dev->struct_mutex);
 900         if (ret)
 901                 return ret;
 902
 903         ret = i915_gem_set_seqno(dev, val);
 904
 905         mutex_unlock(&dev->struct_mutex);
 906
 907         return ret ?: cnt;
 908 }
 909
 910 static const struct file_operations i915_next_seqno_fops = {
 911         .owner = THIS_MODULE,
 912         .open = simple_open,
 913         .read = i915_next_seqno_read,
 914         .write = i915_next_seqno_write,
 915         .llseek = default_llseek,
 916 };
 917
 918 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 919 {
 920         struct drm_info_node *node = (struct drm_info_node *) m->private;
 921         struct drm_device *dev = node->minor->dev;
 922         drm_i915_private_t *dev_priv = dev->dev_private;
 923         u16 crstanddelay;
 924         int ret;
 925
 926         ret = mutex_lock_interruptible(&dev->struct_mutex);
 927         if (ret)
 928                 return ret;
 929
 930         crstanddelay = I915_READ16(CRSTANDVID);
 931
 932         mutex_unlock(&dev->struct_mutex);
 933
 934         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 935
 936         return 0;
 937 }
 938
 939 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 940 {
 941         struct drm_info_node *node = (struct drm_info_node *) m->private;
 942         struct drm_device *dev = node->minor->dev;
 943         drm_i915_private_t *dev_priv = dev->dev_private;
 944         int ret;
 945
 946         if (IS_GEN5(dev)) {
 947                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 948                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 949
 950                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 951                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 952                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 953                            MEMSTAT_VID_SHIFT);
 954                 seq_printf(m, "Current P-state: %d\n",
 955                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 956         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 957                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 958                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 959                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 960                 u32 rpstat;
 961                 u32 rpupei, rpcurup, rpprevup;
 962                 u32 rpdownei, rpcurdown, rpprevdown;
 963                 int max_freq;
 964
 965                 /* RPSTAT1 is in the GT power well */
 966                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 967                 if (ret)
 968                         return ret;
 969
 970                 gen6_gt_force_wake_get(dev_priv);
 971
 972                 rpstat = I915_READ(GEN6_RPSTAT1);
 973                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 974                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 975                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 976                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 977                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 978                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 979
 980                 gen6_gt_force_wake_put(dev_priv);
 981                 mutex_unlock(&dev->struct_mutex);
 982
 983                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 984                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 985                 seq_printf(m, "Render p-state ratio: %d\n",
 986                            (gt_perf_status & 0xff00) >> 8);
 987                 seq_printf(m, "Render p-state VID: %d\n",
 988                            gt_perf_status & 0xff);
 989                 seq_printf(m, "Render p-state limit: %d\n",
 990                            rp_state_limits & 0xff);
 991                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 992                                                 GEN6_CAGF_SHIFT) * GT_FREQUENCY_MULTIPLIER);
 993                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 994                            GEN6_CURICONT_MASK);
 995                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 996                            GEN6_CURBSYTAVG_MASK);
 997                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 998                            GEN6_CURBSYTAVG_MASK);
 999                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
1000                            GEN6_CURIAVG_MASK);
1001                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
1002                            GEN6_CURBSYTAVG_MASK);
1003                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
1004                            GEN6_CURBSYTAVG_MASK);
1005
1006                 max_freq = (rp_state_cap & 0xff0000) >> 16;
1007                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
1008                            max_freq * GT_FREQUENCY_MULTIPLIER);
1009
1010                 max_freq = (rp_state_cap & 0xff00) >> 8;
1011                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
1012                            max_freq * GT_FREQUENCY_MULTIPLIER);
1013
1014                 max_freq = rp_state_cap & 0xff;
1015                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
1016                            max_freq * GT_FREQUENCY_MULTIPLIER);
1017         } else {
1018                 seq_printf(m, "no P-state info available\n");
1019         }
1020
1021         return 0;
1022 }
1023
1024 static int i915_delayfreq_table(struct seq_file *m, void *unused)
1025 {
1026         struct drm_info_node *node = (struct drm_info_node *) m->private;
1027         struct drm_device *dev = node->minor->dev;
1028         drm_i915_private_t *dev_priv = dev->dev_private;
1029         u32 delayfreq;
1030         int ret, i;
1031
1032         ret = mutex_lock_interruptible(&dev->struct_mutex);
1033         if (ret)
1034                 return ret;
1035
1036         for (i = 0; i < 16; i++) {
1037                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
1038                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
1039                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
1040         }
1041
1042         mutex_unlock(&dev->struct_mutex);
1043
1044         return 0;
1045 }
1046
1047 static inline int MAP_TO_MV(int map)
1048 {
1049         return 1250 - (map * 25);
1050 }
1051
1052 static int i915_inttoext_table(struct seq_file *m, void *unused)
1053 {
1054         struct drm_info_node *node = (struct drm_info_node *) m->private;
1055         struct drm_device *dev = node->minor->dev;
1056         drm_i915_private_t *dev_priv = dev->dev_private;
1057         u32 inttoext;
1058         int ret, i;
1059
1060         ret = mutex_lock_interruptible(&dev->struct_mutex);
1061         if (ret)
1062                 return ret;
1063
1064         for (i = 1; i <= 32; i++) {
1065                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
1066                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
1067         }
1068
1069         mutex_unlock(&dev->struct_mutex);
1070
1071         return 0;
1072 }
1073
1074 static int ironlake_drpc_info(struct seq_file *m)
1075 {
1076         struct drm_info_node *node = (struct drm_info_node *) m->private;
1077         struct drm_device *dev = node->minor->dev;
1078         drm_i915_private_t *dev_priv = dev->dev_private;
1079         u32 rgvmodectl, rstdbyctl;
1080         u16 crstandvid;
1081         int ret;
1082
1083         ret = mutex_lock_interruptible(&dev->struct_mutex);
1084         if (ret)
1085                 return ret;
1086
1087         rgvmodectl = I915_READ(MEMMODECTL);
1088         rstdbyctl = I915_READ(RSTDBYCTL);
1089         crstandvid = I915_READ16(CRSTANDVID);
1090
1091         mutex_unlock(&dev->struct_mutex);
1092
1093         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1094                    "yes" : "no");
1095         seq_printf(m, "Boost freq: %d\n",
1096                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1097                    MEMMODE_BOOST_FREQ_SHIFT);
1098         seq_printf(m, "HW control enabled: %s\n",
1099                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1100         seq_printf(m, "SW control enabled: %s\n",
1101                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1102         seq_printf(m, "Gated voltage change: %s\n",
1103                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1104         seq_printf(m, "Starting frequency: P%d\n",
1105                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1106         seq_printf(m, "Max P-state: P%d\n",
1107                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1108         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1109         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1110         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1111         seq_printf(m, "Render standby enabled: %s\n",
1112                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1113         seq_printf(m, "Current RS state: ");
1114         switch (rstdbyctl & RSX_STATUS_MASK) {
1115         case RSX_STATUS_ON:
1116                 seq_printf(m, "on\n");
1117                 break;
1118         case RSX_STATUS_RC1:
1119                 seq_printf(m, "RC1\n");
1120                 break;
1121         case RSX_STATUS_RC1E:
1122                 seq_printf(m, "RC1E\n");
1123                 break;
1124         case RSX_STATUS_RS1:
1125                 seq_printf(m, "RS1\n");
1126                 break;
1127         case RSX_STATUS_RS2:
1128                 seq_printf(m, "RS2 (RC6)\n");
1129                 break;
1130         case RSX_STATUS_RS3:
1131                 seq_printf(m, "RC3 (RC6+)\n");
1132                 break;
1133         default:
1134                 seq_printf(m, "unknown\n");
1135                 break;
1136         }
1137
1138         return 0;
1139 }
1140
1141 static int gen6_drpc_info(struct seq_file *m)
1142 {
1143
1144         struct drm_info_node *node = (struct drm_info_node *) m->private;
1145         struct drm_device *dev = node->minor->dev;
1146         struct drm_i915_private *dev_priv = dev->dev_private;
1147         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1148         unsigned forcewake_count;
1149         int count=0, ret;
1150
1151
1152         ret = mutex_lock_interruptible(&dev->struct_mutex);
1153         if (ret)
1154                 return ret;
1155
1156         spin_lock_irq(&dev_priv->gt_lock);
1157         forcewake_count = dev_priv->forcewake_count;
1158         spin_unlock_irq(&dev_priv->gt_lock);
1159
1160         if (forcewake_count) {
1161                 seq_printf(m, "RC information inaccurate because somebody "
1162                               "holds a forcewake reference \n");
1163         } else {
1164                 /* NB: we cannot use forcewake, else we read the wrong values */
1165                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1166                         udelay(10);
1167                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1168         }
1169
1170         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1171         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1172
1173         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1174         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1175         mutex_unlock(&dev->struct_mutex);
1176         mutex_lock(&dev_priv->rps.hw_lock);
1177         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1178         mutex_unlock(&dev_priv->rps.hw_lock);
1179
1180         seq_printf(m, "Video Turbo Mode: %s\n",
1181                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1182         seq_printf(m, "HW control enabled: %s\n",
1183                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1184         seq_printf(m, "SW control enabled: %s\n",
1185                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1186                           GEN6_RP_MEDIA_SW_MODE));
1187         seq_printf(m, "RC1e Enabled: %s\n",
1188                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1189         seq_printf(m, "RC6 Enabled: %s\n",
1190                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1191         seq_printf(m, "Deep RC6 Enabled: %s\n",
1192                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1193         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1194                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1195         seq_printf(m, "Current RC state: ");
1196         switch (gt_core_status & GEN6_RCn_MASK) {
1197         case GEN6_RC0:
1198                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1199                         seq_printf(m, "Core Power Down\n");
1200                 else
1201                         seq_printf(m, "on\n");
1202                 break;
1203         case GEN6_RC3:
1204                 seq_printf(m, "RC3\n");
1205                 break;
1206         case GEN6_RC6:
1207                 seq_printf(m, "RC6\n");
1208                 break;
1209         case GEN6_RC7:
1210                 seq_printf(m, "RC7\n");
1211                 break;
1212         default:
1213                 seq_printf(m, "Unknown\n");
1214                 break;
1215         }
1216
1217         seq_printf(m, "Core Power Down: %s\n",
1218                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1219
1220         /* Not exactly sure what this is */
1221         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1222                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1223         seq_printf(m, "RC6 residency since boot: %u\n",
1224                    I915_READ(GEN6_GT_GFX_RC6));
1225         seq_printf(m, "RC6+ residency since boot: %u\n",
1226                    I915_READ(GEN6_GT_GFX_RC6p));
1227         seq_printf(m, "RC6++ residency since boot: %u\n",
1228                    I915_READ(GEN6_GT_GFX_RC6pp));
1229
1230         seq_printf(m, "RC6   voltage: %dmV\n",
1231                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1232         seq_printf(m, "RC6+  voltage: %dmV\n",
1233                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1234         seq_printf(m, "RC6++ voltage: %dmV\n",
1235                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1236         return 0;
1237 }
1238
1239 static int i915_drpc_info(struct seq_file *m, void *unused)
1240 {
1241         struct drm_info_node *node = (struct drm_info_node *) m->private;
1242         struct drm_device *dev = node->minor->dev;
1243
1244         if (IS_GEN6(dev) || IS_GEN7(dev))
1245                 return gen6_drpc_info(m);
1246         else
1247                 return ironlake_drpc_info(m);
1248 }
1249
1250 static int i915_fbc_status(struct seq_file *m, void *unused)
1251 {
1252         struct drm_info_node *node = (struct drm_info_node *) m->private;
1253         struct drm_device *dev = node->minor->dev;
1254         drm_i915_private_t *dev_priv = dev->dev_private;
1255
1256         if (!I915_HAS_FBC(dev)) {
1257                 seq_printf(m, "FBC unsupported on this chipset\n");
1258                 return 0;
1259         }
1260
1261         if (intel_fbc_enabled(dev)) {
1262                 seq_printf(m, "FBC enabled\n");
1263         } else {
1264                 seq_printf(m, "FBC disabled: ");
1265                 switch (dev_priv->no_fbc_reason) {
1266                 case FBC_NO_OUTPUT:
1267                         seq_printf(m, "no outputs");
1268                         break;
1269                 case FBC_STOLEN_TOO_SMALL:
1270                         seq_printf(m, "not enough stolen memory");
1271                         break;
1272                 case FBC_UNSUPPORTED_MODE:
1273                         seq_printf(m, "mode not supported");
1274                         break;
1275                 case FBC_MODE_TOO_LARGE:
1276                         seq_printf(m, "mode too large");
1277                         break;
1278                 case FBC_BAD_PLANE:
1279                         seq_printf(m, "FBC unsupported on plane");
1280                         break;
1281                 case FBC_NOT_TILED:
1282                         seq_printf(m, "scanout buffer not tiled");
1283                         break;
1284                 case FBC_MULTIPLE_PIPES:
1285                         seq_printf(m, "multiple pipes are enabled");
1286                         break;
1287                 case FBC_MODULE_PARAM:
1288                         seq_printf(m, "disabled per module param (default off)");
1289                         break;
1290                 default:
1291                         seq_printf(m, "unknown reason");
1292                 }
1293                 seq_printf(m, "\n");
1294         }
1295         return 0;
1296 }
1297
1298 static int i915_sr_status(struct seq_file *m, void *unused)
1299 {
1300         struct drm_info_node *node = (struct drm_info_node *) m->private;
1301         struct drm_device *dev = node->minor->dev;
1302         drm_i915_private_t *dev_priv = dev->dev_private;
1303         bool sr_enabled = false;
1304
1305         if (HAS_PCH_SPLIT(dev))
1306                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1307         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1308                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1309         else if (IS_I915GM(dev))
1310                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1311         else if (IS_PINEVIEW(dev))
1312                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1313
1314         seq_printf(m, "self-refresh: %s\n",
1315                    sr_enabled ? "enabled" : "disabled");
1316
1317         return 0;
1318 }
1319
1320 static int i915_emon_status(struct seq_file *m, void *unused)
1321 {
1322         struct drm_info_node *node = (struct drm_info_node *) m->private;
1323         struct drm_device *dev = node->minor->dev;
1324         drm_i915_private_t *dev_priv = dev->dev_private;
1325         unsigned long temp, chipset, gfx;
1326         int ret;
1327
1328         if (!IS_GEN5(dev))
1329                 return -ENODEV;
1330
1331         ret = mutex_lock_interruptible(&dev->struct_mutex);
1332         if (ret)
1333                 return ret;
1334
1335         temp = i915_mch_val(dev_priv);
1336         chipset = i915_chipset_val(dev_priv);
1337         gfx = i915_gfx_val(dev_priv);
1338         mutex_unlock(&dev->struct_mutex);
1339
1340         seq_printf(m, "GMCH temp: %ld\n", temp);
1341         seq_printf(m, "Chipset power: %ld\n", chipset);
1342         seq_printf(m, "GFX power: %ld\n", gfx);
1343         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1344
1345         return 0;
1346 }
1347
1348 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1349 {
1350         struct drm_info_node *node = (struct drm_info_node *) m->private;
1351         struct drm_device *dev = node->minor->dev;
1352         drm_i915_private_t *dev_priv = dev->dev_private;
1353         int ret;
1354         int gpu_freq, ia_freq;
1355
1356         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1357                 seq_printf(m, "unsupported on this chipset\n");
1358                 return 0;
1359         }
1360
1361         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1362         if (ret)
1363                 return ret;
1364
1365         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1366
1367         for (gpu_freq = dev_priv->rps.min_delay;
1368              gpu_freq <= dev_priv->rps.max_delay;
1369              gpu_freq++) {
1370                 ia_freq = gpu_freq;
1371                 sandybridge_pcode_read(dev_priv,
1372                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1373                                        &ia_freq);
1374                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1375         }
1376
1377         mutex_unlock(&dev_priv->rps.hw_lock);
1378
1379         return 0;
1380 }
1381
1382 static int i915_gfxec(struct seq_file *m, void *unused)
1383 {
1384         struct drm_info_node *node = (struct drm_info_node *) m->private;
1385         struct drm_device *dev = node->minor->dev;
1386         drm_i915_private_t *dev_priv = dev->dev_private;
1387         int ret;
1388
1389         ret = mutex_lock_interruptible(&dev->struct_mutex);
1390         if (ret)
1391                 return ret;
1392
1393         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1394
1395         mutex_unlock(&dev->struct_mutex);
1396
1397         return 0;
1398 }
1399
1400 static int i915_opregion(struct seq_file *m, void *unused)
1401 {
1402         struct drm_info_node *node = (struct drm_info_node *) m->private;
1403         struct drm_device *dev = node->minor->dev;
1404         drm_i915_private_t *dev_priv = dev->dev_private;
1405         struct intel_opregion *opregion = &dev_priv->opregion;
1406         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1407         int ret;
1408
1409         if (data == NULL)
1410                 return -ENOMEM;
1411
1412         ret = mutex_lock_interruptible(&dev->struct_mutex);
1413         if (ret)
1414                 goto out;
1415
1416         if (opregion->header) {
1417                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1418                 seq_write(m, data, OPREGION_SIZE);
1419         }
1420
1421         mutex_unlock(&dev->struct_mutex);
1422
1423 out:
1424         kfree(data);
1425         return 0;
1426 }
1427
1428 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1429 {
1430         struct drm_info_node *node = (struct drm_info_node *) m->private;
1431         struct drm_device *dev = node->minor->dev;
1432         drm_i915_private_t *dev_priv = dev->dev_private;
1433         struct intel_fbdev *ifbdev;
1434         struct intel_framebuffer *fb;
1435         int ret;
1436
1437         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1438         if (ret)
1439                 return ret;
1440
1441         ifbdev = dev_priv->fbdev;
1442         fb = to_intel_framebuffer(ifbdev->helper.fb);
1443
1444         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1445                    fb->base.width,
1446                    fb->base.height,
1447                    fb->base.depth,
1448                    fb->base.bits_per_pixel);
1449         describe_obj(m, fb->obj);
1450         seq_printf(m, "\n");
1451
1452         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1453                 if (&fb->base == ifbdev->helper.fb)
1454                         continue;
1455
1456                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1457                            fb->base.width,
1458                            fb->base.height,
1459                            fb->base.depth,
1460                            fb->base.bits_per_pixel);
1461                 describe_obj(m, fb->obj);
1462                 seq_printf(m, "\n");
1463         }
1464
1465         mutex_unlock(&dev->mode_config.mutex);
1466
1467         return 0;
1468 }
1469
1470 static int i915_context_status(struct seq_file *m, void *unused)
1471 {
1472         struct drm_info_node *node = (struct drm_info_node *) m->private;
1473         struct drm_device *dev = node->minor->dev;
1474         drm_i915_private_t *dev_priv = dev->dev_private;
1475         int ret;
1476
1477         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1478         if (ret)
1479                 return ret;
1480
1481         if (dev_priv->ips.pwrctx) {
1482                 seq_printf(m, "power context ");
1483                 describe_obj(m, dev_priv->ips.pwrctx);
1484                 seq_printf(m, "\n");
1485         }
1486
1487         if (dev_priv->ips.renderctx) {
1488                 seq_printf(m, "render context ");
1489                 describe_obj(m, dev_priv->ips.renderctx);
1490                 seq_printf(m, "\n");
1491         }
1492
1493         mutex_unlock(&dev->mode_config.mutex);
1494
1495         return 0;
1496 }
1497
1498 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1499 {
1500         struct drm_info_node *node = (struct drm_info_node *) m->private;
1501         struct drm_device *dev = node->minor->dev;
1502         struct drm_i915_private *dev_priv = dev->dev_private;
1503         unsigned forcewake_count;
1504
1505         spin_lock_irq(&dev_priv->gt_lock);
1506         forcewake_count = dev_priv->forcewake_count;
1507         spin_unlock_irq(&dev_priv->gt_lock);
1508
1509         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1510
1511         return 0;
1512 }
1513
1514 static const char *swizzle_string(unsigned swizzle)
1515 {
1516         switch(swizzle) {
1517         case I915_BIT_6_SWIZZLE_NONE:
1518                 return "none";
1519         case I915_BIT_6_SWIZZLE_9:
1520                 return "bit9";
1521         case I915_BIT_6_SWIZZLE_9_10:
1522                 return "bit9/bit10";
1523         case I915_BIT_6_SWIZZLE_9_11:
1524                 return "bit9/bit11";
1525         case I915_BIT_6_SWIZZLE_9_10_11:
1526                 return "bit9/bit10/bit11";
1527         case I915_BIT_6_SWIZZLE_9_17:
1528                 return "bit9/bit17";
1529         case I915_BIT_6_SWIZZLE_9_10_17:
1530                 return "bit9/bit10/bit17";
1531         case I915_BIT_6_SWIZZLE_UNKNOWN:
1532                 return "unkown";
1533         }
1534
1535         return "bug";
1536 }
1537
1538 static int i915_swizzle_info(struct seq_file *m, void *data)
1539 {
1540         struct drm_info_node *node = (struct drm_info_node *) m->private;
1541         struct drm_device *dev = node->minor->dev;
1542         struct drm_i915_private *dev_priv = dev->dev_private;
1543         int ret;
1544
1545         ret = mutex_lock_interruptible(&dev->struct_mutex);
1546         if (ret)
1547                 return ret;
1548
1549         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1550                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1551         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1552                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1553
1554         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1555                 seq_printf(m, "DDC = 0x%08x\n",
1556                            I915_READ(DCC));
1557                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1558                            I915_READ16(C0DRB3));
1559                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1560                            I915_READ16(C1DRB3));
1561         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1562                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1563                            I915_READ(MAD_DIMM_C0));
1564                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1565                            I915_READ(MAD_DIMM_C1));
1566                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1567                            I915_READ(MAD_DIMM_C2));
1568                 seq_printf(m, "TILECTL = 0x%08x\n",
1569                            I915_READ(TILECTL));
1570                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1571                            I915_READ(ARB_MODE));
1572                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1573                            I915_READ(DISP_ARB_CTL));
1574         }
1575         mutex_unlock(&dev->struct_mutex);
1576
1577         return 0;
1578 }
1579
1580 static int i915_ppgtt_info(struct seq_file *m, void *data)
1581 {
1582         struct drm_info_node *node = (struct drm_info_node *) m->private;
1583         struct drm_device *dev = node->minor->dev;
1584         struct drm_i915_private *dev_priv = dev->dev_private;
1585         struct intel_ring_buffer *ring;
1586         int i, ret;
1587
1588
1589         ret = mutex_lock_interruptible(&dev->struct_mutex);
1590         if (ret)
1591                 return ret;
1592         if (INTEL_INFO(dev)->gen == 6)
1593                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1594
1595         for_each_ring(ring, dev_priv, i) {
1596                 seq_printf(m, "%s\n", ring->name);
1597                 if (INTEL_INFO(dev)->gen == 7)
1598                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1599                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1600                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1601                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1602         }
1603         if (dev_priv->mm.aliasing_ppgtt) {
1604                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1605
1606                 seq_printf(m, "aliasing PPGTT:\n");
1607                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1608         }
1609         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1610         mutex_unlock(&dev->struct_mutex);
1611
1612         return 0;
1613 }
1614
1615 static int i915_dpio_info(struct seq_file *m, void *data)
1616 {
1617         struct drm_info_node *node = (struct drm_info_node *) m->private;
1618         struct drm_device *dev = node->minor->dev;
1619         struct drm_i915_private *dev_priv = dev->dev_private;
1620         int ret;
1621
1622
1623         if (!IS_VALLEYVIEW(dev)) {
1624                 seq_printf(m, "unsupported\n");
1625                 return 0;
1626         }
1627
1628         ret = mutex_lock_interruptible(&dev_priv->dpio_lock);
1629         if (ret)
1630                 return ret;
1631
1632         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1633
1634         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1635                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1636         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1637                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1638
1639         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1640                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1641         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1642                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1643
1644         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1645                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1646         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1647                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1648
1649         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1650                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1651         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1652                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1653
1654         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1655                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1656
1657         mutex_unlock(&dev_priv->dpio_lock);
1658
1659         return 0;
1660 }
1661
1662 static ssize_t
1663 i915_wedged_read(struct file *filp,
1664                  char __user *ubuf,
1665                  size_t max,
1666                  loff_t *ppos)
1667 {
1668         struct drm_device *dev = filp->private_data;
1669         drm_i915_private_t *dev_priv = dev->dev_private;
1670         char buf[80];
1671         int len;
1672
1673         len = snprintf(buf, sizeof(buf),
1674                        "wedged :  %d\n",
1675                        atomic_read(&dev_priv->mm.wedged));
1676
1677         if (len > sizeof(buf))
1678                 len = sizeof(buf);
1679
1680         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1681 }
1682
1683 static ssize_t
1684 i915_wedged_write(struct file *filp,
1685                   const char __user *ubuf,
1686                   size_t cnt,
1687                   loff_t *ppos)
1688 {
1689         struct drm_device *dev = filp->private_data;
1690         char buf[20];
1691         int val = 1;
1692
1693         if (cnt > 0) {
1694                 if (cnt > sizeof(buf) - 1)
1695                         return -EINVAL;
1696
1697                 if (copy_from_user(buf, ubuf, cnt))
1698                         return -EFAULT;
1699                 buf[cnt] = 0;
1700
1701                 val = simple_strtoul(buf, NULL, 0);
1702         }
1703
1704         DRM_INFO("Manually setting wedged to %d\n", val);
1705         i915_handle_error(dev, val);
1706
1707         return cnt;
1708 }
1709
1710 static const struct file_operations i915_wedged_fops = {
1711         .owner = THIS_MODULE,
1712         .open = simple_open,
1713         .read = i915_wedged_read,
1714         .write = i915_wedged_write,
1715         .llseek = default_llseek,
1716 };
1717
1718 static ssize_t
1719 i915_ring_stop_read(struct file *filp,
1720                     char __user *ubuf,
1721                     size_t max,
1722                     loff_t *ppos)
1723 {
1724         struct drm_device *dev = filp->private_data;
1725         drm_i915_private_t *dev_priv = dev->dev_private;
1726         char buf[20];
1727         int len;
1728
1729         len = snprintf(buf, sizeof(buf),
1730                        "0x%08x\n", dev_priv->stop_rings);
1731
1732         if (len > sizeof(buf))
1733                 len = sizeof(buf);
1734
1735         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1736 }
1737
1738 static ssize_t
1739 i915_ring_stop_write(struct file *filp,
1740                      const char __user *ubuf,
1741                      size_t cnt,
1742                      loff_t *ppos)
1743 {
1744         struct drm_device *dev = filp->private_data;
1745         struct drm_i915_private *dev_priv = dev->dev_private;
1746         char buf[20];
1747         int val = 0, ret;
1748
1749         if (cnt > 0) {
1750                 if (cnt > sizeof(buf) - 1)
1751                         return -EINVAL;
1752
1753                 if (copy_from_user(buf, ubuf, cnt))
1754                         return -EFAULT;
1755                 buf[cnt] = 0;
1756
1757                 val = simple_strtoul(buf, NULL, 0);
1758         }
1759
1760         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1761
1762         ret = mutex_lock_interruptible(&dev->struct_mutex);
1763         if (ret)
1764                 return ret;
1765
1766         dev_priv->stop_rings = val;
1767         mutex_unlock(&dev->struct_mutex);
1768
1769         return cnt;
1770 }
1771
1772 static const struct file_operations i915_ring_stop_fops = {
1773         .owner = THIS_MODULE,
1774         .open = simple_open,
1775         .read = i915_ring_stop_read,
1776         .write = i915_ring_stop_write,
1777         .llseek = default_llseek,
1778 };
1779
1780 #define DROP_UNBOUND 0x1
1781 #define DROP_BOUND 0x2
1782 #define DROP_RETIRE 0x4
1783 #define DROP_ACTIVE 0x8
1784 #define DROP_ALL (DROP_UNBOUND | \
1785                   DROP_BOUND | \
1786                   DROP_RETIRE | \
1787                   DROP_ACTIVE)
1788 static ssize_t
1789 i915_drop_caches_read(struct file *filp,
1790                       char __user *ubuf,
1791                       size_t max,
1792                       loff_t *ppos)
1793 {
1794         char buf[20];
1795         int len;
1796
1797         len = snprintf(buf, sizeof(buf), "0x%08x\n", DROP_ALL);
1798         if (len > sizeof(buf))
1799                 len = sizeof(buf);
1800
1801         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1802 }
1803
1804 static ssize_t
1805 i915_drop_caches_write(struct file *filp,
1806                        const char __user *ubuf,
1807                        size_t cnt,
1808                        loff_t *ppos)
1809 {
1810         struct drm_device *dev = filp->private_data;
1811         struct drm_i915_private *dev_priv = dev->dev_private;
1812         struct drm_i915_gem_object *obj, *next;
1813         char buf[20];
1814         int val = 0, ret;
1815
1816         if (cnt > 0) {
1817                 if (cnt > sizeof(buf) - 1)
1818                         return -EINVAL;
1819
1820                 if (copy_from_user(buf, ubuf, cnt))
1821                         return -EFAULT;
1822                 buf[cnt] = 0;
1823
1824                 val = simple_strtoul(buf, NULL, 0);
1825         }
1826
1827         DRM_DEBUG_DRIVER("Dropping caches: 0x%08x\n", val);
1828
1829         /* No need to check and wait for gpu resets, only libdrm auto-restarts
1830          * on ioctls on -EAGAIN. */
1831         ret = mutex_lock_interruptible(&dev->struct_mutex);
1832         if (ret)
1833                 return ret;
1834
1835         if (val & DROP_ACTIVE) {
1836                 ret = i915_gpu_idle(dev);
1837                 if (ret)
1838                         goto unlock;
1839         }
1840
1841         if (val & (DROP_RETIRE | DROP_ACTIVE))
1842                 i915_gem_retire_requests(dev);
1843
1844         if (val & DROP_BOUND) {
1845                 list_for_each_entry_safe(obj, next, &dev_priv->mm.inactive_list, mm_list)
1846                         if (obj->pin_count == 0) {
1847                                 ret = i915_gem_object_unbind(obj);
1848                                 if (ret)
1849                                         goto unlock;
1850                         }
1851         }
1852
1853         if (val & DROP_UNBOUND) {
1854                 list_for_each_entry_safe(obj, next, &dev_priv->mm.unbound_list, gtt_list)
1855                         if (obj->pages_pin_count == 0) {
1856                                 ret = i915_gem_object_put_pages(obj);
1857                                 if (ret)
1858                                         goto unlock;
1859                         }
1860         }
1861
1862 unlock:
1863         mutex_unlock(&dev->struct_mutex);
1864
1865         return ret ?: cnt;
1866 }
1867
1868 static const struct file_operations i915_drop_caches_fops = {
1869         .owner = THIS_MODULE,
1870         .open = simple_open,
1871         .read = i915_drop_caches_read,
1872         .write = i915_drop_caches_write,
1873         .llseek = default_llseek,
1874 };
1875
1876 static ssize_t
1877 i915_max_freq_read(struct file *filp,
1878                    char __user *ubuf,
1879                    size_t max,
1880                    loff_t *ppos)
1881 {
1882         struct drm_device *dev = filp->private_data;
1883         drm_i915_private_t *dev_priv = dev->dev_private;
1884         char buf[80];
1885         int len, ret;
1886
1887         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1888                 return -ENODEV;
1889
1890         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1891         if (ret)
1892                 return ret;
1893
1894         len = snprintf(buf, sizeof(buf),
1895                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1896         mutex_unlock(&dev_priv->rps.hw_lock);
1897
1898         if (len > sizeof(buf))
1899                 len = sizeof(buf);
1900
1901         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1902 }
1903
1904 static ssize_t
1905 i915_max_freq_write(struct file *filp,
1906                   const char __user *ubuf,
1907                   size_t cnt,
1908                   loff_t *ppos)
1909 {
1910         struct drm_device *dev = filp->private_data;
1911         struct drm_i915_private *dev_priv = dev->dev_private;
1912         char buf[20];
1913         int val = 1, ret;
1914
1915         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1916                 return -ENODEV;
1917
1918         if (cnt > 0) {
1919                 if (cnt > sizeof(buf) - 1)
1920                         return -EINVAL;
1921
1922                 if (copy_from_user(buf, ubuf, cnt))
1923                         return -EFAULT;
1924                 buf[cnt] = 0;
1925
1926                 val = simple_strtoul(buf, NULL, 0);
1927         }
1928
1929         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1930
1931         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1932         if (ret)
1933                 return ret;
1934
1935         /*
1936          * Turbo will still be enabled, but won't go above the set value.
1937          */
1938         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1939
1940         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1941         mutex_unlock(&dev_priv->rps.hw_lock);
1942
1943         return cnt;
1944 }
1945
1946 static const struct file_operations i915_max_freq_fops = {
1947         .owner = THIS_MODULE,
1948         .open = simple_open,
1949         .read = i915_max_freq_read,
1950         .write = i915_max_freq_write,
1951         .llseek = default_llseek,
1952 };
1953
1954 static ssize_t
1955 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1956                    loff_t *ppos)
1957 {
1958         struct drm_device *dev = filp->private_data;
1959         drm_i915_private_t *dev_priv = dev->dev_private;
1960         char buf[80];
1961         int len, ret;
1962
1963         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1964                 return -ENODEV;
1965
1966         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1967         if (ret)
1968                 return ret;
1969
1970         len = snprintf(buf, sizeof(buf),
1971                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1972         mutex_unlock(&dev_priv->rps.hw_lock);
1973
1974         if (len > sizeof(buf))
1975                 len = sizeof(buf);
1976
1977         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1978 }
1979
1980 static ssize_t
1981 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
1982                     loff_t *ppos)
1983 {
1984         struct drm_device *dev = filp->private_data;
1985         struct drm_i915_private *dev_priv = dev->dev_private;
1986         char buf[20];
1987         int val = 1, ret;
1988
1989         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1990                 return -ENODEV;
1991
1992         if (cnt > 0) {
1993                 if (cnt > sizeof(buf) - 1)
1994                         return -EINVAL;
1995
1996                 if (copy_from_user(buf, ubuf, cnt))
1997                         return -EFAULT;
1998                 buf[cnt] = 0;
1999
2000                 val = simple_strtoul(buf, NULL, 0);
2001         }
2002
2003         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
2004
2005         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2006         if (ret)
2007                 return ret;
2008
2009         /*
2010          * Turbo will still be enabled, but won't go below the set value.
2011          */
2012         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
2013
2014         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
2015         mutex_unlock(&dev_priv->rps.hw_lock);
2016
2017         return cnt;
2018 }
2019
2020 static const struct file_operations i915_min_freq_fops = {
2021         .owner = THIS_MODULE,
2022         .open = simple_open,
2023         .read = i915_min_freq_read,
2024         .write = i915_min_freq_write,
2025         .llseek = default_llseek,
2026 };
2027
2028 static ssize_t
2029 i915_cache_sharing_read(struct file *filp,
2030                    char __user *ubuf,
2031                    size_t max,
2032                    loff_t *ppos)
2033 {
2034         struct drm_device *dev = filp->private_data;
2035         drm_i915_private_t *dev_priv = dev->dev_private;
2036         char buf[80];
2037         u32 snpcr;
2038         int len, ret;
2039
2040         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2041                 return -ENODEV;
2042
2043         ret = mutex_lock_interruptible(&dev->struct_mutex);
2044         if (ret)
2045                 return ret;
2046
2047         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2048         mutex_unlock(&dev_priv->dev->struct_mutex);
2049
2050         len = snprintf(buf, sizeof(buf),
2051                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
2052                        GEN6_MBC_SNPCR_SHIFT);
2053
2054         if (len > sizeof(buf))
2055                 len = sizeof(buf);
2056
2057         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
2058 }
2059
2060 static ssize_t
2061 i915_cache_sharing_write(struct file *filp,
2062                   const char __user *ubuf,
2063                   size_t cnt,
2064                   loff_t *ppos)
2065 {
2066         struct drm_device *dev = filp->private_data;
2067         struct drm_i915_private *dev_priv = dev->dev_private;
2068         char buf[20];
2069         u32 snpcr;
2070         int val = 1;
2071
2072         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2073                 return -ENODEV;
2074
2075         if (cnt > 0) {
2076                 if (cnt > sizeof(buf) - 1)
2077                         return -EINVAL;
2078
2079                 if (copy_from_user(buf, ubuf, cnt))
2080                         return -EFAULT;
2081                 buf[cnt] = 0;
2082
2083                 val = simple_strtoul(buf, NULL, 0);
2084         }
2085
2086         if (val < 0 || val > 3)
2087                 return -EINVAL;
2088
2089         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
2090
2091         /* Update the cache sharing policy here as well */
2092         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2093         snpcr &= ~GEN6_MBC_SNPCR_MASK;
2094         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
2095         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
2096
2097         return cnt;
2098 }
2099
2100 static const struct file_operations i915_cache_sharing_fops = {
2101         .owner = THIS_MODULE,
2102         .open = simple_open,
2103         .read = i915_cache_sharing_read,
2104         .write = i915_cache_sharing_write,
2105         .llseek = default_llseek,
2106 };
2107
2108 /* As the drm_debugfs_init() routines are called before dev->dev_private is
2109  * allocated we need to hook into the minor for release. */
2110 static int
2111 drm_add_fake_info_node(struct drm_minor *minor,
2112                        struct dentry *ent,
2113                        const void *key)
2114 {
2115         struct drm_info_node *node;
2116
2117         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
2118         if (node == NULL) {
2119                 debugfs_remove(ent);
2120                 return -ENOMEM;
2121         }
2122
2123         node->minor = minor;
2124         node->dent = ent;
2125         node->info_ent = (void *) key;
2126
2127         mutex_lock(&minor->debugfs_lock);
2128         list_add(&node->list, &minor->debugfs_list);
2129         mutex_unlock(&minor->debugfs_lock);
2130
2131         return 0;
2132 }
2133
2134 static int i915_forcewake_open(struct inode *inode, struct file *file)
2135 {
2136         struct drm_device *dev = inode->i_private;
2137         struct drm_i915_private *dev_priv = dev->dev_private;
2138
2139         if (INTEL_INFO(dev)->gen < 6)
2140                 return 0;
2141
2142         gen6_gt_force_wake_get(dev_priv);
2143
2144         return 0;
2145 }
2146
2147 static int i915_forcewake_release(struct inode *inode, struct file *file)
2148 {
2149         struct drm_device *dev = inode->i_private;
2150         struct drm_i915_private *dev_priv = dev->dev_private;
2151
2152         if (INTEL_INFO(dev)->gen < 6)
2153                 return 0;
2154
2155         gen6_gt_force_wake_put(dev_priv);
2156
2157         return 0;
2158 }
2159
2160 static const struct file_operations i915_forcewake_fops = {
2161         .owner = THIS_MODULE,
2162         .open = i915_forcewake_open,
2163         .release = i915_forcewake_release,
2164 };
2165
2166 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2167 {
2168         struct drm_device *dev = minor->dev;
2169         struct dentry *ent;
2170
2171         ent = debugfs_create_file("i915_forcewake_user",
2172                                   S_IRUSR,
2173                                   root, dev,
2174                                   &i915_forcewake_fops);
2175         if (IS_ERR(ent))
2176                 return PTR_ERR(ent);
2177
2178         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2179 }
2180
2181 static int i915_debugfs_create(struct dentry *root,
2182                                struct drm_minor *minor,
2183                                const char *name,
2184                                const struct file_operations *fops)
2185 {
2186         struct drm_device *dev = minor->dev;
2187         struct dentry *ent;
2188
2189         ent = debugfs_create_file(name,
2190                                   S_IRUGO | S_IWUSR,
2191                                   root, dev,
2192                                   fops);
2193         if (IS_ERR(ent))
2194                 return PTR_ERR(ent);
2195
2196         return drm_add_fake_info_node(minor, ent, fops);
2197 }
2198
2199 static struct drm_info_list i915_debugfs_list[] = {
2200         {"i915_capabilities", i915_capabilities, 0},
2201         {"i915_gem_objects", i915_gem_object_info, 0},
2202         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2203         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2204         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2205         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2206         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2207         {"i915_gem_request", i915_gem_request_info, 0},
2208         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2209         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2210         {"i915_gem_interrupt", i915_interrupt_info, 0},
2211         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2212         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2213         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2214         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2215         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2216         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2217         {"i915_inttoext_table", i915_inttoext_table, 0},
2218         {"i915_drpc_info", i915_drpc_info, 0},
2219         {"i915_emon_status", i915_emon_status, 0},
2220         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2221         {"i915_gfxec", i915_gfxec, 0},
2222         {"i915_fbc_status", i915_fbc_status, 0},
2223         {"i915_sr_status", i915_sr_status, 0},
2224         {"i915_opregion", i915_opregion, 0},
2225         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2226         {"i915_context_status", i915_context_status, 0},
2227         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2228         {"i915_swizzle_info", i915_swizzle_info, 0},
2229         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2230         {"i915_dpio", i915_dpio_info, 0},
2231 };
2232 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2233
2234 int i915_debugfs_init(struct drm_minor *minor)
2235 {
2236         int ret;
2237
2238         ret = i915_debugfs_create(minor->debugfs_root, minor,
2239                                   "i915_wedged",
2240                                   &i915_wedged_fops);
2241         if (ret)
2242                 return ret;
2243
2244         ret = i915_forcewake_create(minor->debugfs_root, minor);
2245         if (ret)
2246                 return ret;
2247
2248         ret = i915_debugfs_create(minor->debugfs_root, minor,
2249                                   "i915_max_freq",
2250                                   &i915_max_freq_fops);
2251         if (ret)
2252                 return ret;
2253
2254         ret = i915_debugfs_create(minor->debugfs_root, minor,
2255                                   "i915_min_freq",
2256                                   &i915_min_freq_fops);
2257         if (ret)
2258                 return ret;
2259
2260         ret = i915_debugfs_create(minor->debugfs_root, minor,
2261                                   "i915_cache_sharing",
2262                                   &i915_cache_sharing_fops);
2263         if (ret)
2264                 return ret;
2265
2266         ret = i915_debugfs_create(minor->debugfs_root, minor,
2267                                   "i915_ring_stop",
2268                                   &i915_ring_stop_fops);
2269         if (ret)
2270                 return ret;
2271
2272         ret = i915_debugfs_create(minor->debugfs_root, minor,
2273                                   "i915_gem_drop_caches",
2274                                   &i915_drop_caches_fops);
2275         if (ret)
2276                 return ret;
2277
2278         ret = i915_debugfs_create(minor->debugfs_root, minor,
2279                                   "i915_error_state",
2280                                   &i915_error_state_fops);
2281         if (ret)
2282                 return ret;
2283
2284         ret = i915_debugfs_create(minor->debugfs_root, minor,
2285                                  "i915_next_seqno",
2286                                  &i915_next_seqno_fops);
2287         if (ret)
2288                 return ret;
2289
2290         return drm_debugfs_create_files(i915_debugfs_list,
2291                                         I915_DEBUGFS_ENTRIES,
2292                                         minor->debugfs_root, minor);
2293 }
2294
2295 void i915_debugfs_cleanup(struct drm_minor *minor)
2296 {
2297         drm_debugfs_remove_files(i915_debugfs_list,
2298                                  I915_DEBUGFS_ENTRIES, minor);
2299         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2300                                  1, minor);
2301         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2302                                  1, minor);
2303         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2304                                  1, minor);
2305         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2306                                  1, minor);
2307         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2308                                  1, minor);
2309         drm_debugfs_remove_files((struct drm_info_list *) &i915_drop_caches_fops,
2310                                  1, minor);
2311         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2312                                  1, minor);
2313         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2314                                  1, minor);
2315         drm_debugfs_remove_files((struct drm_info_list *) &i915_next_seqno_fops,
2316                                  1, minor);
2317 }
2318
2319 #endif /* CONFIG_DEBUG_FS */