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->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 263
 264         mutex_unlock(&dev->struct_mutex);
 265
 266         return 0;
 267 }
 268
 269 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 270 {
 271         struct drm_info_node *node = (struct drm_info_node *) m->private;
 272         struct drm_device *dev = node->minor->dev;
 273         uintptr_t list = (uintptr_t) node->info_ent->data;
 274         struct drm_i915_private *dev_priv = dev->dev_private;
 275         struct drm_i915_gem_object *obj;
 276         size_t total_obj_size, total_gtt_size;
 277         int count, ret;
 278
 279         ret = mutex_lock_interruptible(&dev->struct_mutex);
 280         if (ret)
 281                 return ret;
 282
 283         total_obj_size = total_gtt_size = count = 0;
 284         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 285                 if (list == PINNED_LIST && obj->pin_count == 0)
 286                         continue;
 287
 288                 seq_printf(m, "   ");
 289                 describe_obj(m, obj);
 290                 seq_printf(m, "\n");
 291                 total_obj_size += obj->base.size;
 292                 total_gtt_size += obj->gtt_space->size;
 293                 count++;
 294         }
 295
 296         mutex_unlock(&dev->struct_mutex);
 297
 298         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 299                    count, total_obj_size, total_gtt_size);
 300
 301         return 0;
 302 }
 303
 304 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 305 {
 306         struct drm_info_node *node = (struct drm_info_node *) m->private;
 307         struct drm_device *dev = node->minor->dev;
 308         unsigned long flags;
 309         struct intel_crtc *crtc;
 310
 311         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 312                 const char pipe = pipe_name(crtc->pipe);
 313                 const char plane = plane_name(crtc->plane);
 314                 struct intel_unpin_work *work;
 315
 316                 spin_lock_irqsave(&dev->event_lock, flags);
 317                 work = crtc->unpin_work;
 318                 if (work == NULL) {
 319                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 320                                    pipe, plane);
 321                 } else {
 322                         if (!work->pending) {
 323                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 324                                            pipe, plane);
 325                         } else {
 326                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 327                                            pipe, plane);
 328                         }
 329                         if (work->enable_stall_check)
 330                                 seq_printf(m, "Stall check enabled, ");
 331                         else
 332                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 333                         seq_printf(m, "%d prepares\n", work->pending);
 334
 335                         if (work->old_fb_obj) {
 336                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 337                                 if (obj)
 338                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 339                         }
 340                         if (work->pending_flip_obj) {
 341                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 342                                 if (obj)
 343                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 344                         }
 345                 }
 346                 spin_unlock_irqrestore(&dev->event_lock, flags);
 347         }
 348
 349         return 0;
 350 }
 351
 352 static int i915_gem_request_info(struct seq_file *m, void *data)
 353 {
 354         struct drm_info_node *node = (struct drm_info_node *) m->private;
 355         struct drm_device *dev = node->minor->dev;
 356         drm_i915_private_t *dev_priv = dev->dev_private;
 357         struct intel_ring_buffer *ring;
 358         struct drm_i915_gem_request *gem_request;
 359         int ret, count, i;
 360
 361         ret = mutex_lock_interruptible(&dev->struct_mutex);
 362         if (ret)
 363                 return ret;
 364
 365         count = 0;
 366         for_each_ring(ring, dev_priv, i) {
 367                 if (list_empty(&ring->request_list))
 368                         continue;
 369
 370                 seq_printf(m, "%s requests:\n", ring->name);
 371                 list_for_each_entry(gem_request,
 372                                     &ring->request_list,
 373                                     list) {
 374                         seq_printf(m, "    %d @ %d\n",
 375                                    gem_request->seqno,
 376                                    (int) (jiffies - gem_request->emitted_jiffies));
 377                 }
 378                 count++;
 379         }
 380         mutex_unlock(&dev->struct_mutex);
 381
 382         if (count == 0)
 383                 seq_printf(m, "No requests\n");
 384
 385         return 0;
 386 }
 387
 388 static void i915_ring_seqno_info(struct seq_file *m,
 389                                  struct intel_ring_buffer *ring)
 390 {
 391         if (ring->get_seqno) {
 392                 seq_printf(m, "Current sequence (%s): %d\n",
 393                            ring->name, ring->get_seqno(ring, false));
 394         }
 395 }
 396
 397 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 398 {
 399         struct drm_info_node *node = (struct drm_info_node *) m->private;
 400         struct drm_device *dev = node->minor->dev;
 401         drm_i915_private_t *dev_priv = dev->dev_private;
 402         struct intel_ring_buffer *ring;
 403         int ret, i;
 404
 405         ret = mutex_lock_interruptible(&dev->struct_mutex);
 406         if (ret)
 407                 return ret;
 408
 409         for_each_ring(ring, dev_priv, i)
 410                 i915_ring_seqno_info(m, ring);
 411
 412         mutex_unlock(&dev->struct_mutex);
 413
 414         return 0;
 415 }
 416
 417
 418 static int i915_interrupt_info(struct seq_file *m, void *data)
 419 {
 420         struct drm_info_node *node = (struct drm_info_node *) m->private;
 421         struct drm_device *dev = node->minor->dev;
 422         drm_i915_private_t *dev_priv = dev->dev_private;
 423         struct intel_ring_buffer *ring;
 424         int ret, i, pipe;
 425
 426         ret = mutex_lock_interruptible(&dev->struct_mutex);
 427         if (ret)
 428                 return ret;
 429
 430         if (IS_VALLEYVIEW(dev)) {
 431                 seq_printf(m, "Display IER:\t%08x\n",
 432                            I915_READ(VLV_IER));
 433                 seq_printf(m, "Display IIR:\t%08x\n",
 434                            I915_READ(VLV_IIR));
 435                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 436                            I915_READ(VLV_IIR_RW));
 437                 seq_printf(m, "Display IMR:\t%08x\n",
 438                            I915_READ(VLV_IMR));
 439                 for_each_pipe(pipe)
 440                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 441                                    pipe_name(pipe),
 442                                    I915_READ(PIPESTAT(pipe)));
 443
 444                 seq_printf(m, "Master IER:\t%08x\n",
 445                            I915_READ(VLV_MASTER_IER));
 446
 447                 seq_printf(m, "Render IER:\t%08x\n",
 448                            I915_READ(GTIER));
 449                 seq_printf(m, "Render IIR:\t%08x\n",
 450                            I915_READ(GTIIR));
 451                 seq_printf(m, "Render IMR:\t%08x\n",
 452                            I915_READ(GTIMR));
 453
 454                 seq_printf(m, "PM IER:\t\t%08x\n",
 455                            I915_READ(GEN6_PMIER));
 456                 seq_printf(m, "PM IIR:\t\t%08x\n",
 457                            I915_READ(GEN6_PMIIR));
 458                 seq_printf(m, "PM IMR:\t\t%08x\n",
 459                            I915_READ(GEN6_PMIMR));
 460
 461                 seq_printf(m, "Port hotplug:\t%08x\n",
 462                            I915_READ(PORT_HOTPLUG_EN));
 463                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 464                            I915_READ(VLV_DPFLIPSTAT));
 465                 seq_printf(m, "DPINVGTT:\t%08x\n",
 466                            I915_READ(DPINVGTT));
 467
 468         } else if (!HAS_PCH_SPLIT(dev)) {
 469                 seq_printf(m, "Interrupt enable:    %08x\n",
 470                            I915_READ(IER));
 471                 seq_printf(m, "Interrupt identity:  %08x\n",
 472                            I915_READ(IIR));
 473                 seq_printf(m, "Interrupt mask:      %08x\n",
 474                            I915_READ(IMR));
 475                 for_each_pipe(pipe)
 476                         seq_printf(m, "Pipe %c stat:         %08x\n",
 477                                    pipe_name(pipe),
 478                                    I915_READ(PIPESTAT(pipe)));
 479         } else {
 480                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 481                            I915_READ(DEIER));
 482                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 483                            I915_READ(DEIIR));
 484                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 485                            I915_READ(DEIMR));
 486                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 487                            I915_READ(SDEIER));
 488                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 489                            I915_READ(SDEIIR));
 490                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 491                            I915_READ(SDEIMR));
 492                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 493                            I915_READ(GTIER));
 494                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 495                            I915_READ(GTIIR));
 496                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 497                            I915_READ(GTIMR));
 498         }
 499         seq_printf(m, "Interrupts received: %d\n",
 500                    atomic_read(&dev_priv->irq_received));
 501         for_each_ring(ring, dev_priv, i) {
 502                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 503                         seq_printf(m,
 504                                    "Graphics Interrupt mask (%s):       %08x\n",
 505                                    ring->name, I915_READ_IMR(ring));
 506                 }
 507                 i915_ring_seqno_info(m, ring);
 508         }
 509         mutex_unlock(&dev->struct_mutex);
 510
 511         return 0;
 512 }
 513
 514 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 515 {
 516         struct drm_info_node *node = (struct drm_info_node *) m->private;
 517         struct drm_device *dev = node->minor->dev;
 518         drm_i915_private_t *dev_priv = dev->dev_private;
 519         int i, ret;
 520
 521         ret = mutex_lock_interruptible(&dev->struct_mutex);
 522         if (ret)
 523                 return ret;
 524
 525         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 526         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 527         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 528                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 529
 530                 seq_printf(m, "Fence %d, pin count = %d, object = ",
 531                            i, dev_priv->fence_regs[i].pin_count);
 532                 if (obj == NULL)
 533                         seq_printf(m, "unused");
 534                 else
 535                         describe_obj(m, obj);
 536                 seq_printf(m, "\n");
 537         }
 538
 539         mutex_unlock(&dev->struct_mutex);
 540         return 0;
 541 }
 542
 543 static int i915_hws_info(struct seq_file *m, void *data)
 544 {
 545         struct drm_info_node *node = (struct drm_info_node *) m->private;
 546         struct drm_device *dev = node->minor->dev;
 547         drm_i915_private_t *dev_priv = dev->dev_private;
 548         struct intel_ring_buffer *ring;
 549         const u32 *hws;
 550         int i;
 551
 552         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 553         hws = ring->status_page.page_addr;
 554         if (hws == NULL)
 555                 return 0;
 556
 557         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 558                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 559                            i * 4,
 560                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 561         }
 562         return 0;
 563 }
 564
 565 static const char *ring_str(int ring)
 566 {
 567         switch (ring) {
 568         case RCS: return "render";
 569         case VCS: return "bsd";
 570         case BCS: return "blt";
 571         default: return "";
 572         }
 573 }
 574
 575 static const char *pin_flag(int pinned)
 576 {
 577         if (pinned > 0)
 578                 return " P";
 579         else if (pinned < 0)
 580                 return " p";
 581         else
 582                 return "";
 583 }
 584
 585 static const char *tiling_flag(int tiling)
 586 {
 587         switch (tiling) {
 588         default:
 589         case I915_TILING_NONE: return "";
 590         case I915_TILING_X: return " X";
 591         case I915_TILING_Y: return " Y";
 592         }
 593 }
 594
 595 static const char *dirty_flag(int dirty)
 596 {
 597         return dirty ? " dirty" : "";
 598 }
 599
 600 static const char *purgeable_flag(int purgeable)
 601 {
 602         return purgeable ? " purgeable" : "";
 603 }
 604
 605 static void print_error_buffers(struct seq_file *m,
 606                                 const char *name,
 607                                 struct drm_i915_error_buffer *err,
 608                                 int count)
 609 {
 610         seq_printf(m, "%s [%d]:\n", name, count);
 611
 612         while (count--) {
 613                 seq_printf(m, "  %08x %8u %02x %02x %x %x%s%s%s%s%s%s%s",
 614                            err->gtt_offset,
 615                            err->size,
 616                            err->read_domains,
 617                            err->write_domain,
 618                            err->rseqno, err->wseqno,
 619                            pin_flag(err->pinned),
 620                            tiling_flag(err->tiling),
 621                            dirty_flag(err->dirty),
 622                            purgeable_flag(err->purgeable),
 623                            err->ring != -1 ? " " : "",
 624                            ring_str(err->ring),
 625                            cache_level_str(err->cache_level));
 626
 627                 if (err->name)
 628                         seq_printf(m, " (name: %d)", err->name);
 629                 if (err->fence_reg != I915_FENCE_REG_NONE)
 630                         seq_printf(m, " (fence: %d)", err->fence_reg);
 631
 632                 seq_printf(m, "\n");
 633                 err++;
 634         }
 635 }
 636
 637 static void i915_ring_error_state(struct seq_file *m,
 638                                   struct drm_device *dev,
 639                                   struct drm_i915_error_state *error,
 640                                   unsigned ring)
 641 {
 642         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
 643         seq_printf(m, "%s command stream:\n", ring_str(ring));
 644         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 645         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 646         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 647         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 648         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 649         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 650         if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
 651                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 652
 653         if (INTEL_INFO(dev)->gen >= 4)
 654                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 655         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 656         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 657         if (INTEL_INFO(dev)->gen >= 6) {
 658                 seq_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
 659                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 660                 seq_printf(m, "  SYNC_0: 0x%08x [last synced 0x%08x]\n",
 661                            error->semaphore_mboxes[ring][0],
 662                            error->semaphore_seqno[ring][0]);
 663                 seq_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
 664                            error->semaphore_mboxes[ring][1],
 665                            error->semaphore_seqno[ring][1]);
 666         }
 667         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 668         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
 669         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 670         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 671 }
 672
 673 struct i915_error_state_file_priv {
 674         struct drm_device *dev;
 675         struct drm_i915_error_state *error;
 676 };
 677
 678 static int i915_error_state(struct seq_file *m, void *unused)
 679 {
 680         struct i915_error_state_file_priv *error_priv = m->private;
 681         struct drm_device *dev = error_priv->dev;
 682         drm_i915_private_t *dev_priv = dev->dev_private;
 683         struct drm_i915_error_state *error = error_priv->error;
 684         struct intel_ring_buffer *ring;
 685         int i, j, page, offset, elt;
 686
 687         if (!error) {
 688                 seq_printf(m, "no error state collected\n");
 689                 return 0;
 690         }
 691
 692         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 693                    error->time.tv_usec);
 694         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 695         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 696         seq_printf(m, "IER: 0x%08x\n", error->ier);
 697         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 698         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
 699
 700         for (i = 0; i < dev_priv->num_fence_regs; i++)
 701                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 702
 703         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
 704                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
 705
 706         if (INTEL_INFO(dev)->gen >= 6) {
 707                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 708                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 709         }
 710
 711         if (INTEL_INFO(dev)->gen == 7)
 712                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 713
 714         for_each_ring(ring, dev_priv, i)
 715                 i915_ring_error_state(m, dev, error, i);
 716
 717         if (error->active_bo)
 718                 print_error_buffers(m, "Active",
 719                                     error->active_bo,
 720                                     error->active_bo_count);
 721
 722         if (error->pinned_bo)
 723                 print_error_buffers(m, "Pinned",
 724                                     error->pinned_bo,
 725                                     error->pinned_bo_count);
 726
 727         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 728                 struct drm_i915_error_object *obj;
 729
 730                 if ((obj = error->ring[i].batchbuffer)) {
 731                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 732                                    dev_priv->ring[i].name,
 733                                    obj->gtt_offset);
 734                         offset = 0;
 735                         for (page = 0; page < obj->page_count; page++) {
 736                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 737                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 738                                         offset += 4;
 739                                 }
 740                         }
 741                 }
 742
 743                 if (error->ring[i].num_requests) {
 744                         seq_printf(m, "%s --- %d requests\n",
 745                                    dev_priv->ring[i].name,
 746                                    error->ring[i].num_requests);
 747                         for (j = 0; j < error->ring[i].num_requests; j++) {
 748                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 749                                            error->ring[i].requests[j].seqno,
 750                                            error->ring[i].requests[j].jiffies,
 751                                            error->ring[i].requests[j].tail);
 752                         }
 753                 }
 754
 755                 if ((obj = error->ring[i].ringbuffer)) {
 756                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 757                                    dev_priv->ring[i].name,
 758                                    obj->gtt_offset);
 759                         offset = 0;
 760                         for (page = 0; page < obj->page_count; page++) {
 761                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 762                                         seq_printf(m, "%08x :  %08x\n",
 763                                                    offset,
 764                                                    obj->pages[page][elt]);
 765                                         offset += 4;
 766                                 }
 767                         }
 768                 }
 769         }
 770
 771         if (error->overlay)
 772                 intel_overlay_print_error_state(m, error->overlay);
 773
 774         if (error->display)
 775                 intel_display_print_error_state(m, dev, error->display);
 776
 777         return 0;
 778 }
 779
 780 static ssize_t
 781 i915_error_state_write(struct file *filp,
 782                        const char __user *ubuf,
 783                        size_t cnt,
 784                        loff_t *ppos)
 785 {
 786         struct seq_file *m = filp->private_data;
 787         struct i915_error_state_file_priv *error_priv = m->private;
 788         struct drm_device *dev = error_priv->dev;
 789         int ret;
 790
 791         DRM_DEBUG_DRIVER("Resetting error state\n");
 792
 793         ret = mutex_lock_interruptible(&dev->struct_mutex);
 794         if (ret)
 795                 return ret;
 796
 797         i915_destroy_error_state(dev);
 798         mutex_unlock(&dev->struct_mutex);
 799
 800         return cnt;
 801 }
 802
 803 static int i915_error_state_open(struct inode *inode, struct file *file)
 804 {
 805         struct drm_device *dev = inode->i_private;
 806         drm_i915_private_t *dev_priv = dev->dev_private;
 807         struct i915_error_state_file_priv *error_priv;
 808         unsigned long flags;
 809
 810         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 811         if (!error_priv)
 812                 return -ENOMEM;
 813
 814         error_priv->dev = dev;
 815
 816         spin_lock_irqsave(&dev_priv->error_lock, flags);
 817         error_priv->error = dev_priv->first_error;
 818         if (error_priv->error)
 819                 kref_get(&error_priv->error->ref);
 820         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 821
 822         return single_open(file, i915_error_state, error_priv);
 823 }
 824
 825 static int i915_error_state_release(struct inode *inode, struct file *file)
 826 {
 827         struct seq_file *m = file->private_data;
 828         struct i915_error_state_file_priv *error_priv = m->private;
 829
 830         if (error_priv->error)
 831                 kref_put(&error_priv->error->ref, i915_error_state_free);
 832         kfree(error_priv);
 833
 834         return single_release(inode, file);
 835 }
 836
 837 static const struct file_operations i915_error_state_fops = {
 838         .owner = THIS_MODULE,
 839         .open = i915_error_state_open,
 840         .read = seq_read,
 841         .write = i915_error_state_write,
 842         .llseek = default_llseek,
 843         .release = i915_error_state_release,
 844 };
 845
 846 static ssize_t
 847 i915_next_seqno_read(struct file *filp,
 848                  char __user *ubuf,
 849                  size_t max,
 850                  loff_t *ppos)
 851 {
 852         struct drm_device *dev = filp->private_data;
 853         drm_i915_private_t *dev_priv = dev->dev_private;
 854         char buf[80];
 855         int len;
 856         int ret;
 857
 858         ret = mutex_lock_interruptible(&dev->struct_mutex);
 859         if (ret)
 860                 return ret;
 861
 862         len = snprintf(buf, sizeof(buf),
 863                        "next_seqno :  0x%x\n",
 864                        dev_priv->next_seqno);
 865
 866         mutex_unlock(&dev->struct_mutex);
 867
 868         if (len > sizeof(buf))
 869                 len = sizeof(buf);
 870
 871         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 872 }
 873
 874 static ssize_t
 875 i915_next_seqno_write(struct file *filp,
 876                       const char __user *ubuf,
 877                       size_t cnt,
 878                       loff_t *ppos)
 879 {
 880         struct drm_device *dev = filp->private_data;
 881         drm_i915_private_t *dev_priv = dev->dev_private;
 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         if (val == 0)
 900                 return -EINVAL;
 901
 902         ret = mutex_lock_interruptible(&dev->struct_mutex);
 903         if (ret)
 904                 return ret;
 905
 906         if (i915_seqno_passed(val, dev_priv->next_seqno)) {
 907                 dev_priv->next_seqno = val;
 908                 DRM_DEBUG_DRIVER("Advancing seqno to %u\n", val);
 909         } else {
 910                 ret = -EINVAL;
 911         }
 912
 913         mutex_unlock(&dev->struct_mutex);
 914
 915         return ret ?: cnt;
 916 }
 917
 918 static const struct file_operations i915_next_seqno_fops = {
 919         .owner = THIS_MODULE,
 920         .open = simple_open,
 921         .read = i915_next_seqno_read,
 922         .write = i915_next_seqno_write,
 923         .llseek = default_llseek,
 924 };
 925
 926 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 927 {
 928         struct drm_info_node *node = (struct drm_info_node *) m->private;
 929         struct drm_device *dev = node->minor->dev;
 930         drm_i915_private_t *dev_priv = dev->dev_private;
 931         u16 crstanddelay;
 932         int ret;
 933
 934         ret = mutex_lock_interruptible(&dev->struct_mutex);
 935         if (ret)
 936                 return ret;
 937
 938         crstanddelay = I915_READ16(CRSTANDVID);
 939
 940         mutex_unlock(&dev->struct_mutex);
 941
 942         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 943
 944         return 0;
 945 }
 946
 947 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 948 {
 949         struct drm_info_node *node = (struct drm_info_node *) m->private;
 950         struct drm_device *dev = node->minor->dev;
 951         drm_i915_private_t *dev_priv = dev->dev_private;
 952         int ret;
 953
 954         if (IS_GEN5(dev)) {
 955                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 956                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 957
 958                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 959                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 960                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 961                            MEMSTAT_VID_SHIFT);
 962                 seq_printf(m, "Current P-state: %d\n",
 963                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 964         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 965                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 966                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 967                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 968                 u32 rpstat;
 969                 u32 rpupei, rpcurup, rpprevup;
 970                 u32 rpdownei, rpcurdown, rpprevdown;
 971                 int max_freq;
 972
 973                 /* RPSTAT1 is in the GT power well */
 974                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 975                 if (ret)
 976                         return ret;
 977
 978                 gen6_gt_force_wake_get(dev_priv);
 979
 980                 rpstat = I915_READ(GEN6_RPSTAT1);
 981                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 982                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 983                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 984                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 985                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 986                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 987
 988                 gen6_gt_force_wake_put(dev_priv);
 989                 mutex_unlock(&dev->struct_mutex);
 990
 991                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 992                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 993                 seq_printf(m, "Render p-state ratio: %d\n",
 994                            (gt_perf_status & 0xff00) >> 8);
 995                 seq_printf(m, "Render p-state VID: %d\n",
 996                            gt_perf_status & 0xff);
 997                 seq_printf(m, "Render p-state limit: %d\n",
 998                            rp_state_limits & 0xff);
 999                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
1000                                                 GEN6_CAGF_SHIFT) * GT_FREQUENCY_MULTIPLIER);
1001                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
1002                            GEN6_CURICONT_MASK);
1003                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
1004                            GEN6_CURBSYTAVG_MASK);
1005                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
1006                            GEN6_CURBSYTAVG_MASK);
1007                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
1008                            GEN6_CURIAVG_MASK);
1009                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
1010                            GEN6_CURBSYTAVG_MASK);
1011                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
1012                            GEN6_CURBSYTAVG_MASK);
1013
1014                 max_freq = (rp_state_cap & 0xff0000) >> 16;
1015                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
1016                            max_freq * GT_FREQUENCY_MULTIPLIER);
1017
1018                 max_freq = (rp_state_cap & 0xff00) >> 8;
1019                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
1020                            max_freq * GT_FREQUENCY_MULTIPLIER);
1021
1022                 max_freq = rp_state_cap & 0xff;
1023                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
1024                            max_freq * GT_FREQUENCY_MULTIPLIER);
1025         } else {
1026                 seq_printf(m, "no P-state info available\n");
1027         }
1028
1029         return 0;
1030 }
1031
1032 static int i915_delayfreq_table(struct seq_file *m, void *unused)
1033 {
1034         struct drm_info_node *node = (struct drm_info_node *) m->private;
1035         struct drm_device *dev = node->minor->dev;
1036         drm_i915_private_t *dev_priv = dev->dev_private;
1037         u32 delayfreq;
1038         int ret, i;
1039
1040         ret = mutex_lock_interruptible(&dev->struct_mutex);
1041         if (ret)
1042                 return ret;
1043
1044         for (i = 0; i < 16; i++) {
1045                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
1046                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
1047                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
1048         }
1049
1050         mutex_unlock(&dev->struct_mutex);
1051
1052         return 0;
1053 }
1054
1055 static inline int MAP_TO_MV(int map)
1056 {
1057         return 1250 - (map * 25);
1058 }
1059
1060 static int i915_inttoext_table(struct seq_file *m, void *unused)
1061 {
1062         struct drm_info_node *node = (struct drm_info_node *) m->private;
1063         struct drm_device *dev = node->minor->dev;
1064         drm_i915_private_t *dev_priv = dev->dev_private;
1065         u32 inttoext;
1066         int ret, i;
1067
1068         ret = mutex_lock_interruptible(&dev->struct_mutex);
1069         if (ret)
1070                 return ret;
1071
1072         for (i = 1; i <= 32; i++) {
1073                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
1074                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
1075         }
1076
1077         mutex_unlock(&dev->struct_mutex);
1078
1079         return 0;
1080 }
1081
1082 static int ironlake_drpc_info(struct seq_file *m)
1083 {
1084         struct drm_info_node *node = (struct drm_info_node *) m->private;
1085         struct drm_device *dev = node->minor->dev;
1086         drm_i915_private_t *dev_priv = dev->dev_private;
1087         u32 rgvmodectl, rstdbyctl;
1088         u16 crstandvid;
1089         int ret;
1090
1091         ret = mutex_lock_interruptible(&dev->struct_mutex);
1092         if (ret)
1093                 return ret;
1094
1095         rgvmodectl = I915_READ(MEMMODECTL);
1096         rstdbyctl = I915_READ(RSTDBYCTL);
1097         crstandvid = I915_READ16(CRSTANDVID);
1098
1099         mutex_unlock(&dev->struct_mutex);
1100
1101         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1102                    "yes" : "no");
1103         seq_printf(m, "Boost freq: %d\n",
1104                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1105                    MEMMODE_BOOST_FREQ_SHIFT);
1106         seq_printf(m, "HW control enabled: %s\n",
1107                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1108         seq_printf(m, "SW control enabled: %s\n",
1109                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1110         seq_printf(m, "Gated voltage change: %s\n",
1111                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1112         seq_printf(m, "Starting frequency: P%d\n",
1113                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1114         seq_printf(m, "Max P-state: P%d\n",
1115                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1116         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1117         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1118         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1119         seq_printf(m, "Render standby enabled: %s\n",
1120                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1121         seq_printf(m, "Current RS state: ");
1122         switch (rstdbyctl & RSX_STATUS_MASK) {
1123         case RSX_STATUS_ON:
1124                 seq_printf(m, "on\n");
1125                 break;
1126         case RSX_STATUS_RC1:
1127                 seq_printf(m, "RC1\n");
1128                 break;
1129         case RSX_STATUS_RC1E:
1130                 seq_printf(m, "RC1E\n");
1131                 break;
1132         case RSX_STATUS_RS1:
1133                 seq_printf(m, "RS1\n");
1134                 break;
1135         case RSX_STATUS_RS2:
1136                 seq_printf(m, "RS2 (RC6)\n");
1137                 break;
1138         case RSX_STATUS_RS3:
1139                 seq_printf(m, "RC3 (RC6+)\n");
1140                 break;
1141         default:
1142                 seq_printf(m, "unknown\n");
1143                 break;
1144         }
1145
1146         return 0;
1147 }
1148
1149 static int gen6_drpc_info(struct seq_file *m)
1150 {
1151
1152         struct drm_info_node *node = (struct drm_info_node *) m->private;
1153         struct drm_device *dev = node->minor->dev;
1154         struct drm_i915_private *dev_priv = dev->dev_private;
1155         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1156         unsigned forcewake_count;
1157         int count=0, ret;
1158
1159
1160         ret = mutex_lock_interruptible(&dev->struct_mutex);
1161         if (ret)
1162                 return ret;
1163
1164         spin_lock_irq(&dev_priv->gt_lock);
1165         forcewake_count = dev_priv->forcewake_count;
1166         spin_unlock_irq(&dev_priv->gt_lock);
1167
1168         if (forcewake_count) {
1169                 seq_printf(m, "RC information inaccurate because somebody "
1170                               "holds a forcewake reference \n");
1171         } else {
1172                 /* NB: we cannot use forcewake, else we read the wrong values */
1173                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1174                         udelay(10);
1175                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1176         }
1177
1178         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1179         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1180
1181         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1182         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1183         mutex_unlock(&dev->struct_mutex);
1184         mutex_lock(&dev_priv->rps.hw_lock);
1185         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1186         mutex_unlock(&dev_priv->rps.hw_lock);
1187
1188         seq_printf(m, "Video Turbo Mode: %s\n",
1189                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1190         seq_printf(m, "HW control enabled: %s\n",
1191                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1192         seq_printf(m, "SW control enabled: %s\n",
1193                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1194                           GEN6_RP_MEDIA_SW_MODE));
1195         seq_printf(m, "RC1e Enabled: %s\n",
1196                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1197         seq_printf(m, "RC6 Enabled: %s\n",
1198                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1199         seq_printf(m, "Deep RC6 Enabled: %s\n",
1200                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1201         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1202                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1203         seq_printf(m, "Current RC state: ");
1204         switch (gt_core_status & GEN6_RCn_MASK) {
1205         case GEN6_RC0:
1206                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1207                         seq_printf(m, "Core Power Down\n");
1208                 else
1209                         seq_printf(m, "on\n");
1210                 break;
1211         case GEN6_RC3:
1212                 seq_printf(m, "RC3\n");
1213                 break;
1214         case GEN6_RC6:
1215                 seq_printf(m, "RC6\n");
1216                 break;
1217         case GEN6_RC7:
1218                 seq_printf(m, "RC7\n");
1219                 break;
1220         default:
1221                 seq_printf(m, "Unknown\n");
1222                 break;
1223         }
1224
1225         seq_printf(m, "Core Power Down: %s\n",
1226                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1227
1228         /* Not exactly sure what this is */
1229         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1230                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1231         seq_printf(m, "RC6 residency since boot: %u\n",
1232                    I915_READ(GEN6_GT_GFX_RC6));
1233         seq_printf(m, "RC6+ residency since boot: %u\n",
1234                    I915_READ(GEN6_GT_GFX_RC6p));
1235         seq_printf(m, "RC6++ residency since boot: %u\n",
1236                    I915_READ(GEN6_GT_GFX_RC6pp));
1237
1238         seq_printf(m, "RC6   voltage: %dmV\n",
1239                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1240         seq_printf(m, "RC6+  voltage: %dmV\n",
1241                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1242         seq_printf(m, "RC6++ voltage: %dmV\n",
1243                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1244         return 0;
1245 }
1246
1247 static int i915_drpc_info(struct seq_file *m, void *unused)
1248 {
1249         struct drm_info_node *node = (struct drm_info_node *) m->private;
1250         struct drm_device *dev = node->minor->dev;
1251
1252         if (IS_GEN6(dev) || IS_GEN7(dev))
1253                 return gen6_drpc_info(m);
1254         else
1255                 return ironlake_drpc_info(m);
1256 }
1257
1258 static int i915_fbc_status(struct seq_file *m, void *unused)
1259 {
1260         struct drm_info_node *node = (struct drm_info_node *) m->private;
1261         struct drm_device *dev = node->minor->dev;
1262         drm_i915_private_t *dev_priv = dev->dev_private;
1263
1264         if (!I915_HAS_FBC(dev)) {
1265                 seq_printf(m, "FBC unsupported on this chipset\n");
1266                 return 0;
1267         }
1268
1269         if (intel_fbc_enabled(dev)) {
1270                 seq_printf(m, "FBC enabled\n");
1271         } else {
1272                 seq_printf(m, "FBC disabled: ");
1273                 switch (dev_priv->no_fbc_reason) {
1274                 case FBC_NO_OUTPUT:
1275                         seq_printf(m, "no outputs");
1276                         break;
1277                 case FBC_STOLEN_TOO_SMALL:
1278                         seq_printf(m, "not enough stolen memory");
1279                         break;
1280                 case FBC_UNSUPPORTED_MODE:
1281                         seq_printf(m, "mode not supported");
1282                         break;
1283                 case FBC_MODE_TOO_LARGE:
1284                         seq_printf(m, "mode too large");
1285                         break;
1286                 case FBC_BAD_PLANE:
1287                         seq_printf(m, "FBC unsupported on plane");
1288                         break;
1289                 case FBC_NOT_TILED:
1290                         seq_printf(m, "scanout buffer not tiled");
1291                         break;
1292                 case FBC_MULTIPLE_PIPES:
1293                         seq_printf(m, "multiple pipes are enabled");
1294                         break;
1295                 case FBC_MODULE_PARAM:
1296                         seq_printf(m, "disabled per module param (default off)");
1297                         break;
1298                 default:
1299                         seq_printf(m, "unknown reason");
1300                 }
1301                 seq_printf(m, "\n");
1302         }
1303         return 0;
1304 }
1305
1306 static int i915_sr_status(struct seq_file *m, void *unused)
1307 {
1308         struct drm_info_node *node = (struct drm_info_node *) m->private;
1309         struct drm_device *dev = node->minor->dev;
1310         drm_i915_private_t *dev_priv = dev->dev_private;
1311         bool sr_enabled = false;
1312
1313         if (HAS_PCH_SPLIT(dev))
1314                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1315         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1316                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1317         else if (IS_I915GM(dev))
1318                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1319         else if (IS_PINEVIEW(dev))
1320                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1321
1322         seq_printf(m, "self-refresh: %s\n",
1323                    sr_enabled ? "enabled" : "disabled");
1324
1325         return 0;
1326 }
1327
1328 static int i915_emon_status(struct seq_file *m, void *unused)
1329 {
1330         struct drm_info_node *node = (struct drm_info_node *) m->private;
1331         struct drm_device *dev = node->minor->dev;
1332         drm_i915_private_t *dev_priv = dev->dev_private;
1333         unsigned long temp, chipset, gfx;
1334         int ret;
1335
1336         if (!IS_GEN5(dev))
1337                 return -ENODEV;
1338
1339         ret = mutex_lock_interruptible(&dev->struct_mutex);
1340         if (ret)
1341                 return ret;
1342
1343         temp = i915_mch_val(dev_priv);
1344         chipset = i915_chipset_val(dev_priv);
1345         gfx = i915_gfx_val(dev_priv);
1346         mutex_unlock(&dev->struct_mutex);
1347
1348         seq_printf(m, "GMCH temp: %ld\n", temp);
1349         seq_printf(m, "Chipset power: %ld\n", chipset);
1350         seq_printf(m, "GFX power: %ld\n", gfx);
1351         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1352
1353         return 0;
1354 }
1355
1356 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1357 {
1358         struct drm_info_node *node = (struct drm_info_node *) m->private;
1359         struct drm_device *dev = node->minor->dev;
1360         drm_i915_private_t *dev_priv = dev->dev_private;
1361         int ret;
1362         int gpu_freq, ia_freq;
1363
1364         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1365                 seq_printf(m, "unsupported on this chipset\n");
1366                 return 0;
1367         }
1368
1369         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1370         if (ret)
1371                 return ret;
1372
1373         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1374
1375         for (gpu_freq = dev_priv->rps.min_delay;
1376              gpu_freq <= dev_priv->rps.max_delay;
1377              gpu_freq++) {
1378                 ia_freq = gpu_freq;
1379                 sandybridge_pcode_read(dev_priv,
1380                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1381                                        &ia_freq);
1382                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1383         }
1384
1385         mutex_unlock(&dev_priv->rps.hw_lock);
1386
1387         return 0;
1388 }
1389
1390 static int i915_gfxec(struct seq_file *m, void *unused)
1391 {
1392         struct drm_info_node *node = (struct drm_info_node *) m->private;
1393         struct drm_device *dev = node->minor->dev;
1394         drm_i915_private_t *dev_priv = dev->dev_private;
1395         int ret;
1396
1397         ret = mutex_lock_interruptible(&dev->struct_mutex);
1398         if (ret)
1399                 return ret;
1400
1401         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1402
1403         mutex_unlock(&dev->struct_mutex);
1404
1405         return 0;
1406 }
1407
1408 static int i915_opregion(struct seq_file *m, void *unused)
1409 {
1410         struct drm_info_node *node = (struct drm_info_node *) m->private;
1411         struct drm_device *dev = node->minor->dev;
1412         drm_i915_private_t *dev_priv = dev->dev_private;
1413         struct intel_opregion *opregion = &dev_priv->opregion;
1414         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1415         int ret;
1416
1417         if (data == NULL)
1418                 return -ENOMEM;
1419
1420         ret = mutex_lock_interruptible(&dev->struct_mutex);
1421         if (ret)
1422                 goto out;
1423
1424         if (opregion->header) {
1425                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1426                 seq_write(m, data, OPREGION_SIZE);
1427         }
1428
1429         mutex_unlock(&dev->struct_mutex);
1430
1431 out:
1432         kfree(data);
1433         return 0;
1434 }
1435
1436 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1437 {
1438         struct drm_info_node *node = (struct drm_info_node *) m->private;
1439         struct drm_device *dev = node->minor->dev;
1440         drm_i915_private_t *dev_priv = dev->dev_private;
1441         struct intel_fbdev *ifbdev;
1442         struct intel_framebuffer *fb;
1443         int ret;
1444
1445         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1446         if (ret)
1447                 return ret;
1448
1449         ifbdev = dev_priv->fbdev;
1450         fb = to_intel_framebuffer(ifbdev->helper.fb);
1451
1452         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1453                    fb->base.width,
1454                    fb->base.height,
1455                    fb->base.depth,
1456                    fb->base.bits_per_pixel);
1457         describe_obj(m, fb->obj);
1458         seq_printf(m, "\n");
1459
1460         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1461                 if (&fb->base == ifbdev->helper.fb)
1462                         continue;
1463
1464                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1465                            fb->base.width,
1466                            fb->base.height,
1467                            fb->base.depth,
1468                            fb->base.bits_per_pixel);
1469                 describe_obj(m, fb->obj);
1470                 seq_printf(m, "\n");
1471         }
1472
1473         mutex_unlock(&dev->mode_config.mutex);
1474
1475         return 0;
1476 }
1477
1478 static int i915_context_status(struct seq_file *m, void *unused)
1479 {
1480         struct drm_info_node *node = (struct drm_info_node *) m->private;
1481         struct drm_device *dev = node->minor->dev;
1482         drm_i915_private_t *dev_priv = dev->dev_private;
1483         int ret;
1484
1485         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1486         if (ret)
1487                 return ret;
1488
1489         if (dev_priv->ips.pwrctx) {
1490                 seq_printf(m, "power context ");
1491                 describe_obj(m, dev_priv->ips.pwrctx);
1492                 seq_printf(m, "\n");
1493         }
1494
1495         if (dev_priv->ips.renderctx) {
1496                 seq_printf(m, "render context ");
1497                 describe_obj(m, dev_priv->ips.renderctx);
1498                 seq_printf(m, "\n");
1499         }
1500
1501         mutex_unlock(&dev->mode_config.mutex);
1502
1503         return 0;
1504 }
1505
1506 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1507 {
1508         struct drm_info_node *node = (struct drm_info_node *) m->private;
1509         struct drm_device *dev = node->minor->dev;
1510         struct drm_i915_private *dev_priv = dev->dev_private;
1511         unsigned forcewake_count;
1512
1513         spin_lock_irq(&dev_priv->gt_lock);
1514         forcewake_count = dev_priv->forcewake_count;
1515         spin_unlock_irq(&dev_priv->gt_lock);
1516
1517         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1518
1519         return 0;
1520 }
1521
1522 static const char *swizzle_string(unsigned swizzle)
1523 {
1524         switch(swizzle) {
1525         case I915_BIT_6_SWIZZLE_NONE:
1526                 return "none";
1527         case I915_BIT_6_SWIZZLE_9:
1528                 return "bit9";
1529         case I915_BIT_6_SWIZZLE_9_10:
1530                 return "bit9/bit10";
1531         case I915_BIT_6_SWIZZLE_9_11:
1532                 return "bit9/bit11";
1533         case I915_BIT_6_SWIZZLE_9_10_11:
1534                 return "bit9/bit10/bit11";
1535         case I915_BIT_6_SWIZZLE_9_17:
1536                 return "bit9/bit17";
1537         case I915_BIT_6_SWIZZLE_9_10_17:
1538                 return "bit9/bit10/bit17";
1539         case I915_BIT_6_SWIZZLE_UNKNOWN:
1540                 return "unkown";
1541         }
1542
1543         return "bug";
1544 }
1545
1546 static int i915_swizzle_info(struct seq_file *m, void *data)
1547 {
1548         struct drm_info_node *node = (struct drm_info_node *) m->private;
1549         struct drm_device *dev = node->minor->dev;
1550         struct drm_i915_private *dev_priv = dev->dev_private;
1551         int ret;
1552
1553         ret = mutex_lock_interruptible(&dev->struct_mutex);
1554         if (ret)
1555                 return ret;
1556
1557         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1558                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1559         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1560                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1561
1562         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1563                 seq_printf(m, "DDC = 0x%08x\n",
1564                            I915_READ(DCC));
1565                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1566                            I915_READ16(C0DRB3));
1567                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1568                            I915_READ16(C1DRB3));
1569         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1570                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1571                            I915_READ(MAD_DIMM_C0));
1572                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1573                            I915_READ(MAD_DIMM_C1));
1574                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1575                            I915_READ(MAD_DIMM_C2));
1576                 seq_printf(m, "TILECTL = 0x%08x\n",
1577                            I915_READ(TILECTL));
1578                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1579                            I915_READ(ARB_MODE));
1580                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1581                            I915_READ(DISP_ARB_CTL));
1582         }
1583         mutex_unlock(&dev->struct_mutex);
1584
1585         return 0;
1586 }
1587
1588 static int i915_ppgtt_info(struct seq_file *m, void *data)
1589 {
1590         struct drm_info_node *node = (struct drm_info_node *) m->private;
1591         struct drm_device *dev = node->minor->dev;
1592         struct drm_i915_private *dev_priv = dev->dev_private;
1593         struct intel_ring_buffer *ring;
1594         int i, ret;
1595
1596
1597         ret = mutex_lock_interruptible(&dev->struct_mutex);
1598         if (ret)
1599                 return ret;
1600         if (INTEL_INFO(dev)->gen == 6)
1601                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1602
1603         for_each_ring(ring, dev_priv, i) {
1604                 seq_printf(m, "%s\n", ring->name);
1605                 if (INTEL_INFO(dev)->gen == 7)
1606                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1607                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1608                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1609                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1610         }
1611         if (dev_priv->mm.aliasing_ppgtt) {
1612                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1613
1614                 seq_printf(m, "aliasing PPGTT:\n");
1615                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1616         }
1617         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1618         mutex_unlock(&dev->struct_mutex);
1619
1620         return 0;
1621 }
1622
1623 static int i915_dpio_info(struct seq_file *m, void *data)
1624 {
1625         struct drm_info_node *node = (struct drm_info_node *) m->private;
1626         struct drm_device *dev = node->minor->dev;
1627         struct drm_i915_private *dev_priv = dev->dev_private;
1628         int ret;
1629
1630
1631         if (!IS_VALLEYVIEW(dev)) {
1632                 seq_printf(m, "unsupported\n");
1633                 return 0;
1634         }
1635
1636         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1637         if (ret)
1638                 return ret;
1639
1640         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1641
1642         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1643                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1644         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1645                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1646
1647         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1648                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1649         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1650                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1651
1652         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1653                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1654         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1655                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1656
1657         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1658                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1659         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1660                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1661
1662         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1663                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1664
1665         mutex_unlock(&dev->mode_config.mutex);
1666
1667         return 0;
1668 }
1669
1670 static ssize_t
1671 i915_wedged_read(struct file *filp,
1672                  char __user *ubuf,
1673                  size_t max,
1674                  loff_t *ppos)
1675 {
1676         struct drm_device *dev = filp->private_data;
1677         drm_i915_private_t *dev_priv = dev->dev_private;
1678         char buf[80];
1679         int len;
1680
1681         len = snprintf(buf, sizeof(buf),
1682                        "wedged :  %d\n",
1683                        atomic_read(&dev_priv->mm.wedged));
1684
1685         if (len > sizeof(buf))
1686                 len = sizeof(buf);
1687
1688         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1689 }
1690
1691 static ssize_t
1692 i915_wedged_write(struct file *filp,
1693                   const char __user *ubuf,
1694                   size_t cnt,
1695                   loff_t *ppos)
1696 {
1697         struct drm_device *dev = filp->private_data;
1698         char buf[20];
1699         int val = 1;
1700
1701         if (cnt > 0) {
1702                 if (cnt > sizeof(buf) - 1)
1703                         return -EINVAL;
1704
1705                 if (copy_from_user(buf, ubuf, cnt))
1706                         return -EFAULT;
1707                 buf[cnt] = 0;
1708
1709                 val = simple_strtoul(buf, NULL, 0);
1710         }
1711
1712         DRM_INFO("Manually setting wedged to %d\n", val);
1713         i915_handle_error(dev, val);
1714
1715         return cnt;
1716 }
1717
1718 static const struct file_operations i915_wedged_fops = {
1719         .owner = THIS_MODULE,
1720         .open = simple_open,
1721         .read = i915_wedged_read,
1722         .write = i915_wedged_write,
1723         .llseek = default_llseek,
1724 };
1725
1726 static ssize_t
1727 i915_ring_stop_read(struct file *filp,
1728                     char __user *ubuf,
1729                     size_t max,
1730                     loff_t *ppos)
1731 {
1732         struct drm_device *dev = filp->private_data;
1733         drm_i915_private_t *dev_priv = dev->dev_private;
1734         char buf[20];
1735         int len;
1736
1737         len = snprintf(buf, sizeof(buf),
1738                        "0x%08x\n", dev_priv->stop_rings);
1739
1740         if (len > sizeof(buf))
1741                 len = sizeof(buf);
1742
1743         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1744 }
1745
1746 static ssize_t
1747 i915_ring_stop_write(struct file *filp,
1748                      const char __user *ubuf,
1749                      size_t cnt,
1750                      loff_t *ppos)
1751 {
1752         struct drm_device *dev = filp->private_data;
1753         struct drm_i915_private *dev_priv = dev->dev_private;
1754         char buf[20];
1755         int val = 0, ret;
1756
1757         if (cnt > 0) {
1758                 if (cnt > sizeof(buf) - 1)
1759                         return -EINVAL;
1760
1761                 if (copy_from_user(buf, ubuf, cnt))
1762                         return -EFAULT;
1763                 buf[cnt] = 0;
1764
1765                 val = simple_strtoul(buf, NULL, 0);
1766         }
1767
1768         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1769
1770         ret = mutex_lock_interruptible(&dev->struct_mutex);
1771         if (ret)
1772                 return ret;
1773
1774         dev_priv->stop_rings = val;
1775         mutex_unlock(&dev->struct_mutex);
1776
1777         return cnt;
1778 }
1779
1780 static const struct file_operations i915_ring_stop_fops = {
1781         .owner = THIS_MODULE,
1782         .open = simple_open,
1783         .read = i915_ring_stop_read,
1784         .write = i915_ring_stop_write,
1785         .llseek = default_llseek,
1786 };
1787
1788 static ssize_t
1789 i915_max_freq_read(struct file *filp,
1790                    char __user *ubuf,
1791                    size_t max,
1792                    loff_t *ppos)
1793 {
1794         struct drm_device *dev = filp->private_data;
1795         drm_i915_private_t *dev_priv = dev->dev_private;
1796         char buf[80];
1797         int len, ret;
1798
1799         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1800                 return -ENODEV;
1801
1802         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1803         if (ret)
1804                 return ret;
1805
1806         len = snprintf(buf, sizeof(buf),
1807                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1808         mutex_unlock(&dev_priv->rps.hw_lock);
1809
1810         if (len > sizeof(buf))
1811                 len = sizeof(buf);
1812
1813         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1814 }
1815
1816 static ssize_t
1817 i915_max_freq_write(struct file *filp,
1818                   const char __user *ubuf,
1819                   size_t cnt,
1820                   loff_t *ppos)
1821 {
1822         struct drm_device *dev = filp->private_data;
1823         struct drm_i915_private *dev_priv = dev->dev_private;
1824         char buf[20];
1825         int val = 1, ret;
1826
1827         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1828                 return -ENODEV;
1829
1830         if (cnt > 0) {
1831                 if (cnt > sizeof(buf) - 1)
1832                         return -EINVAL;
1833
1834                 if (copy_from_user(buf, ubuf, cnt))
1835                         return -EFAULT;
1836                 buf[cnt] = 0;
1837
1838                 val = simple_strtoul(buf, NULL, 0);
1839         }
1840
1841         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1842
1843         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1844         if (ret)
1845                 return ret;
1846
1847         /*
1848          * Turbo will still be enabled, but won't go above the set value.
1849          */
1850         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1851
1852         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1853         mutex_unlock(&dev_priv->rps.hw_lock);
1854
1855         return cnt;
1856 }
1857
1858 static const struct file_operations i915_max_freq_fops = {
1859         .owner = THIS_MODULE,
1860         .open = simple_open,
1861         .read = i915_max_freq_read,
1862         .write = i915_max_freq_write,
1863         .llseek = default_llseek,
1864 };
1865
1866 static ssize_t
1867 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1868                    loff_t *ppos)
1869 {
1870         struct drm_device *dev = filp->private_data;
1871         drm_i915_private_t *dev_priv = dev->dev_private;
1872         char buf[80];
1873         int len, ret;
1874
1875         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1876                 return -ENODEV;
1877
1878         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1879         if (ret)
1880                 return ret;
1881
1882         len = snprintf(buf, sizeof(buf),
1883                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1884         mutex_unlock(&dev_priv->rps.hw_lock);
1885
1886         if (len > sizeof(buf))
1887                 len = sizeof(buf);
1888
1889         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1890 }
1891
1892 static ssize_t
1893 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
1894                     loff_t *ppos)
1895 {
1896         struct drm_device *dev = filp->private_data;
1897         struct drm_i915_private *dev_priv = dev->dev_private;
1898         char buf[20];
1899         int val = 1, ret;
1900
1901         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1902                 return -ENODEV;
1903
1904         if (cnt > 0) {
1905                 if (cnt > sizeof(buf) - 1)
1906                         return -EINVAL;
1907
1908                 if (copy_from_user(buf, ubuf, cnt))
1909                         return -EFAULT;
1910                 buf[cnt] = 0;
1911
1912                 val = simple_strtoul(buf, NULL, 0);
1913         }
1914
1915         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
1916
1917         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1918         if (ret)
1919                 return ret;
1920
1921         /*
1922          * Turbo will still be enabled, but won't go below the set value.
1923          */
1924         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
1925
1926         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1927         mutex_unlock(&dev_priv->rps.hw_lock);
1928
1929         return cnt;
1930 }
1931
1932 static const struct file_operations i915_min_freq_fops = {
1933         .owner = THIS_MODULE,
1934         .open = simple_open,
1935         .read = i915_min_freq_read,
1936         .write = i915_min_freq_write,
1937         .llseek = default_llseek,
1938 };
1939
1940 static ssize_t
1941 i915_cache_sharing_read(struct file *filp,
1942                    char __user *ubuf,
1943                    size_t max,
1944                    loff_t *ppos)
1945 {
1946         struct drm_device *dev = filp->private_data;
1947         drm_i915_private_t *dev_priv = dev->dev_private;
1948         char buf[80];
1949         u32 snpcr;
1950         int len, ret;
1951
1952         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1953                 return -ENODEV;
1954
1955         ret = mutex_lock_interruptible(&dev->struct_mutex);
1956         if (ret)
1957                 return ret;
1958
1959         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1960         mutex_unlock(&dev_priv->dev->struct_mutex);
1961
1962         len = snprintf(buf, sizeof(buf),
1963                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1964                        GEN6_MBC_SNPCR_SHIFT);
1965
1966         if (len > sizeof(buf))
1967                 len = sizeof(buf);
1968
1969         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1970 }
1971
1972 static ssize_t
1973 i915_cache_sharing_write(struct file *filp,
1974                   const char __user *ubuf,
1975                   size_t cnt,
1976                   loff_t *ppos)
1977 {
1978         struct drm_device *dev = filp->private_data;
1979         struct drm_i915_private *dev_priv = dev->dev_private;
1980         char buf[20];
1981         u32 snpcr;
1982         int val = 1;
1983
1984         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1985                 return -ENODEV;
1986
1987         if (cnt > 0) {
1988                 if (cnt > sizeof(buf) - 1)
1989                         return -EINVAL;
1990
1991                 if (copy_from_user(buf, ubuf, cnt))
1992                         return -EFAULT;
1993                 buf[cnt] = 0;
1994
1995                 val = simple_strtoul(buf, NULL, 0);
1996         }
1997
1998         if (val < 0 || val > 3)
1999                 return -EINVAL;
2000
2001         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
2002
2003         /* Update the cache sharing policy here as well */
2004         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2005         snpcr &= ~GEN6_MBC_SNPCR_MASK;
2006         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
2007         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
2008
2009         return cnt;
2010 }
2011
2012 static const struct file_operations i915_cache_sharing_fops = {
2013         .owner = THIS_MODULE,
2014         .open = simple_open,
2015         .read = i915_cache_sharing_read,
2016         .write = i915_cache_sharing_write,
2017         .llseek = default_llseek,
2018 };
2019
2020 /* As the drm_debugfs_init() routines are called before dev->dev_private is
2021  * allocated we need to hook into the minor for release. */
2022 static int
2023 drm_add_fake_info_node(struct drm_minor *minor,
2024                        struct dentry *ent,
2025                        const void *key)
2026 {
2027         struct drm_info_node *node;
2028
2029         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
2030         if (node == NULL) {
2031                 debugfs_remove(ent);
2032                 return -ENOMEM;
2033         }
2034
2035         node->minor = minor;
2036         node->dent = ent;
2037         node->info_ent = (void *) key;
2038
2039         mutex_lock(&minor->debugfs_lock);
2040         list_add(&node->list, &minor->debugfs_list);
2041         mutex_unlock(&minor->debugfs_lock);
2042
2043         return 0;
2044 }
2045
2046 static int i915_forcewake_open(struct inode *inode, struct file *file)
2047 {
2048         struct drm_device *dev = inode->i_private;
2049         struct drm_i915_private *dev_priv = dev->dev_private;
2050
2051         if (INTEL_INFO(dev)->gen < 6)
2052                 return 0;
2053
2054         gen6_gt_force_wake_get(dev_priv);
2055
2056         return 0;
2057 }
2058
2059 static int i915_forcewake_release(struct inode *inode, struct file *file)
2060 {
2061         struct drm_device *dev = inode->i_private;
2062         struct drm_i915_private *dev_priv = dev->dev_private;
2063
2064         if (INTEL_INFO(dev)->gen < 6)
2065                 return 0;
2066
2067         gen6_gt_force_wake_put(dev_priv);
2068
2069         return 0;
2070 }
2071
2072 static const struct file_operations i915_forcewake_fops = {
2073         .owner = THIS_MODULE,
2074         .open = i915_forcewake_open,
2075         .release = i915_forcewake_release,
2076 };
2077
2078 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2079 {
2080         struct drm_device *dev = minor->dev;
2081         struct dentry *ent;
2082
2083         ent = debugfs_create_file("i915_forcewake_user",
2084                                   S_IRUSR,
2085                                   root, dev,
2086                                   &i915_forcewake_fops);
2087         if (IS_ERR(ent))
2088                 return PTR_ERR(ent);
2089
2090         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2091 }
2092
2093 static int i915_debugfs_create(struct dentry *root,
2094                                struct drm_minor *minor,
2095                                const char *name,
2096                                const struct file_operations *fops)
2097 {
2098         struct drm_device *dev = minor->dev;
2099         struct dentry *ent;
2100
2101         ent = debugfs_create_file(name,
2102                                   S_IRUGO | S_IWUSR,
2103                                   root, dev,
2104                                   fops);
2105         if (IS_ERR(ent))
2106                 return PTR_ERR(ent);
2107
2108         return drm_add_fake_info_node(minor, ent, fops);
2109 }
2110
2111 static struct drm_info_list i915_debugfs_list[] = {
2112         {"i915_capabilities", i915_capabilities, 0},
2113         {"i915_gem_objects", i915_gem_object_info, 0},
2114         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2115         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2116         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2117         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2118         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2119         {"i915_gem_request", i915_gem_request_info, 0},
2120         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2121         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2122         {"i915_gem_interrupt", i915_interrupt_info, 0},
2123         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2124         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2125         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2126         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2127         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2128         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2129         {"i915_inttoext_table", i915_inttoext_table, 0},
2130         {"i915_drpc_info", i915_drpc_info, 0},
2131         {"i915_emon_status", i915_emon_status, 0},
2132         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2133         {"i915_gfxec", i915_gfxec, 0},
2134         {"i915_fbc_status", i915_fbc_status, 0},
2135         {"i915_sr_status", i915_sr_status, 0},
2136         {"i915_opregion", i915_opregion, 0},
2137         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2138         {"i915_context_status", i915_context_status, 0},
2139         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2140         {"i915_swizzle_info", i915_swizzle_info, 0},
2141         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2142         {"i915_dpio", i915_dpio_info, 0},
2143 };
2144 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2145
2146 int i915_debugfs_init(struct drm_minor *minor)
2147 {
2148         int ret;
2149
2150         ret = i915_debugfs_create(minor->debugfs_root, minor,
2151                                   "i915_wedged",
2152                                   &i915_wedged_fops);
2153         if (ret)
2154                 return ret;
2155
2156         ret = i915_forcewake_create(minor->debugfs_root, minor);
2157         if (ret)
2158                 return ret;
2159
2160         ret = i915_debugfs_create(minor->debugfs_root, minor,
2161                                   "i915_max_freq",
2162                                   &i915_max_freq_fops);
2163         if (ret)
2164                 return ret;
2165
2166         ret = i915_debugfs_create(minor->debugfs_root, minor,
2167                                   "i915_min_freq",
2168                                   &i915_min_freq_fops);
2169         if (ret)
2170                 return ret;
2171
2172         ret = i915_debugfs_create(minor->debugfs_root, minor,
2173                                   "i915_cache_sharing",
2174                                   &i915_cache_sharing_fops);
2175         if (ret)
2176                 return ret;
2177
2178         ret = i915_debugfs_create(minor->debugfs_root, minor,
2179                                   "i915_ring_stop",
2180                                   &i915_ring_stop_fops);
2181         if (ret)
2182                 return ret;
2183
2184         ret = i915_debugfs_create(minor->debugfs_root, minor,
2185                                   "i915_error_state",
2186                                   &i915_error_state_fops);
2187         if (ret)
2188                 return ret;
2189
2190         ret = i915_debugfs_create(minor->debugfs_root, minor,
2191                                  "i915_next_seqno",
2192                                  &i915_next_seqno_fops);
2193         if (ret)
2194                 return ret;
2195
2196         return drm_debugfs_create_files(i915_debugfs_list,
2197                                         I915_DEBUGFS_ENTRIES,
2198                                         minor->debugfs_root, minor);
2199 }
2200
2201 void i915_debugfs_cleanup(struct drm_minor *minor)
2202 {
2203         drm_debugfs_remove_files(i915_debugfs_list,
2204                                  I915_DEBUGFS_ENTRIES, minor);
2205         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2206                                  1, minor);
2207         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2208                                  1, minor);
2209         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2210                                  1, minor);
2211         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2212                                  1, minor);
2213         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2214                                  1, minor);
2215         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2216                                  1, minor);
2217         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2218                                  1, minor);
2219         drm_debugfs_remove_files((struct drm_info_list *) &i915_next_seqno_fops,
2220                                  1, minor);
2221 }
2222
2223 #endif /* CONFIG_DEBUG_FS */