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 <generated/utsrelease.h>
  34 #include <drm/drmP.h>
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include <drm/i915_drm.h>
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         INACTIVE_LIST,
  48         PINNED_LIST,
  49 };
  50
  51 static const char *yesno(int v)
  52 {
  53         return v ? "yes" : "no";
  54 }
  55
  56 static int i915_capabilities(struct seq_file *m, void *data)
  57 {
  58         struct drm_info_node *node = (struct drm_info_node *) m->private;
  59         struct drm_device *dev = node->minor->dev;
  60         const struct intel_device_info *info = INTEL_INFO(dev);
  61
  62         seq_printf(m, "gen: %d\n", info->gen);
  63         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  64 #define DEV_INFO_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  65 #define DEV_INFO_SEP ;
  66         DEV_INFO_FLAGS;
  67 #undef DEV_INFO_FLAG
  68 #undef DEV_INFO_SEP
  69
  70         return 0;
  71 }
  72
  73 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  74 {
  75         if (obj->user_pin_count > 0)
  76                 return "P";
  77         else if (obj->pin_count > 0)
  78                 return "p";
  79         else
  80                 return " ";
  81 }
  82
  83 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
  84 {
  85         switch (obj->tiling_mode) {
  86         default:
  87         case I915_TILING_NONE: return " ";
  88         case I915_TILING_X: return "X";
  89         case I915_TILING_Y: return "Y";
  90         }
  91 }
  92
  93 static const char *cache_level_str(int type)
  94 {
  95         switch (type) {
  96         case I915_CACHE_NONE: return " uncached";
  97         case I915_CACHE_LLC: return " snooped (LLC)";
  98         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
  99         default: return "";
 100         }
 101 }
 102
 103 static void
 104 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 105 {
 106         seq_printf(m, "%pK: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s",
 107                    &obj->base,
 108                    get_pin_flag(obj),
 109                    get_tiling_flag(obj),
 110                    obj->base.size / 1024,
 111                    obj->base.read_domains,
 112                    obj->base.write_domain,
 113                    obj->last_read_seqno,
 114                    obj->last_write_seqno,
 115                    obj->last_fenced_seqno,
 116                    cache_level_str(obj->cache_level),
 117                    obj->dirty ? " dirty" : "",
 118                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 119         if (obj->base.name)
 120                 seq_printf(m, " (name: %d)", obj->base.name);
 121         if (obj->pin_count)
 122                 seq_printf(m, " (pinned x %d)", obj->pin_count);
 123         if (obj->fence_reg != I915_FENCE_REG_NONE)
 124                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 125         if (obj->gtt_space != NULL)
 126                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 127                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 128         if (obj->stolen)
 129                 seq_printf(m, " (stolen: %08lx)", obj->stolen->start);
 130         if (obj->pin_mappable || obj->fault_mappable) {
 131                 char s[3], *t = s;
 132                 if (obj->pin_mappable)
 133                         *t++ = 'p';
 134                 if (obj->fault_mappable)
 135                         *t++ = 'f';
 136                 *t = '\0';
 137                 seq_printf(m, " (%s mappable)", s);
 138         }
 139         if (obj->ring != NULL)
 140                 seq_printf(m, " (%s)", obj->ring->name);
 141 }
 142
 143 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 144 {
 145         struct drm_info_node *node = (struct drm_info_node *) m->private;
 146         uintptr_t list = (uintptr_t) node->info_ent->data;
 147         struct list_head *head;
 148         struct drm_device *dev = node->minor->dev;
 149         drm_i915_private_t *dev_priv = dev->dev_private;
 150         struct drm_i915_gem_object *obj;
 151         size_t total_obj_size, total_gtt_size;
 152         int count, ret;
 153
 154         ret = mutex_lock_interruptible(&dev->struct_mutex);
 155         if (ret)
 156                 return ret;
 157
 158         switch (list) {
 159         case ACTIVE_LIST:
 160                 seq_printf(m, "Active:\n");
 161                 head = &dev_priv->mm.active_list;
 162                 break;
 163         case INACTIVE_LIST:
 164                 seq_printf(m, "Inactive:\n");
 165                 head = &dev_priv->mm.inactive_list;
 166                 break;
 167         default:
 168                 mutex_unlock(&dev->struct_mutex);
 169                 return -EINVAL;
 170         }
 171
 172         total_obj_size = total_gtt_size = count = 0;
 173         list_for_each_entry(obj, head, mm_list) {
 174                 seq_printf(m, "   ");
 175                 describe_obj(m, obj);
 176                 seq_printf(m, "\n");
 177                 total_obj_size += obj->base.size;
 178                 total_gtt_size += obj->gtt_space->size;
 179                 count++;
 180         }
 181         mutex_unlock(&dev->struct_mutex);
 182
 183         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 184                    count, total_obj_size, total_gtt_size);
 185         return 0;
 186 }
 187
 188 #define count_objects(list, member) do { \
 189         list_for_each_entry(obj, list, member) { \
 190                 size += obj->gtt_space->size; \
 191                 ++count; \
 192                 if (obj->map_and_fenceable) { \
 193                         mappable_size += obj->gtt_space->size; \
 194                         ++mappable_count; \
 195                 } \
 196         } \
 197 } while (0)
 198
 199 static int i915_gem_object_info(struct seq_file *m, void* data)
 200 {
 201         struct drm_info_node *node = (struct drm_info_node *) m->private;
 202         struct drm_device *dev = node->minor->dev;
 203         struct drm_i915_private *dev_priv = dev->dev_private;
 204         u32 count, mappable_count, purgeable_count;
 205         size_t size, mappable_size, purgeable_size;
 206         struct drm_i915_gem_object *obj;
 207         int ret;
 208
 209         ret = mutex_lock_interruptible(&dev->struct_mutex);
 210         if (ret)
 211                 return ret;
 212
 213         seq_printf(m, "%u objects, %zu bytes\n",
 214                    dev_priv->mm.object_count,
 215                    dev_priv->mm.object_memory);
 216
 217         size = count = mappable_size = mappable_count = 0;
 218         count_objects(&dev_priv->mm.bound_list, gtt_list);
 219         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 220                    count, mappable_count, size, mappable_size);
 221
 222         size = count = mappable_size = mappable_count = 0;
 223         count_objects(&dev_priv->mm.active_list, mm_list);
 224         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 225                    count, mappable_count, size, mappable_size);
 226
 227         size = count = mappable_size = mappable_count = 0;
 228         count_objects(&dev_priv->mm.inactive_list, mm_list);
 229         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 230                    count, mappable_count, size, mappable_size);
 231
 232         size = count = purgeable_size = purgeable_count = 0;
 233         list_for_each_entry(obj, &dev_priv->mm.unbound_list, gtt_list) {
 234                 size += obj->base.size, ++count;
 235                 if (obj->madv == I915_MADV_DONTNEED)
 236                         purgeable_size += obj->base.size, ++purgeable_count;
 237         }
 238         seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
 239
 240         size = count = mappable_size = mappable_count = 0;
 241         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 242                 if (obj->fault_mappable) {
 243                         size += obj->gtt_space->size;
 244                         ++count;
 245                 }
 246                 if (obj->pin_mappable) {
 247                         mappable_size += obj->gtt_space->size;
 248                         ++mappable_count;
 249                 }
 250                 if (obj->madv == I915_MADV_DONTNEED) {
 251                         purgeable_size += obj->base.size;
 252                         ++purgeable_count;
 253                 }
 254         }
 255         seq_printf(m, "%u purgeable objects, %zu bytes\n",
 256                    purgeable_count, purgeable_size);
 257         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 258                    mappable_count, mappable_size);
 259         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 260                    count, size);
 261
 262         seq_printf(m, "%zu [%lu] gtt total\n",
 263                    dev_priv->gtt.total,
 264                    dev_priv->gtt.mappable_end - dev_priv->gtt.start);
 265
 266         mutex_unlock(&dev->struct_mutex);
 267
 268         return 0;
 269 }
 270
 271 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 272 {
 273         struct drm_info_node *node = (struct drm_info_node *) m->private;
 274         struct drm_device *dev = node->minor->dev;
 275         uintptr_t list = (uintptr_t) node->info_ent->data;
 276         struct drm_i915_private *dev_priv = dev->dev_private;
 277         struct drm_i915_gem_object *obj;
 278         size_t total_obj_size, total_gtt_size;
 279         int count, ret;
 280
 281         ret = mutex_lock_interruptible(&dev->struct_mutex);
 282         if (ret)
 283                 return ret;
 284
 285         total_obj_size = total_gtt_size = count = 0;
 286         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 287                 if (list == PINNED_LIST && obj->pin_count == 0)
 288                         continue;
 289
 290                 seq_printf(m, "   ");
 291                 describe_obj(m, obj);
 292                 seq_printf(m, "\n");
 293                 total_obj_size += obj->base.size;
 294                 total_gtt_size += obj->gtt_space->size;
 295                 count++;
 296         }
 297
 298         mutex_unlock(&dev->struct_mutex);
 299
 300         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 301                    count, total_obj_size, total_gtt_size);
 302
 303         return 0;
 304 }
 305
 306 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 307 {
 308         struct drm_info_node *node = (struct drm_info_node *) m->private;
 309         struct drm_device *dev = node->minor->dev;
 310         unsigned long flags;
 311         struct intel_crtc *crtc;
 312
 313         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 314                 const char pipe = pipe_name(crtc->pipe);
 315                 const char plane = plane_name(crtc->plane);
 316                 struct intel_unpin_work *work;
 317
 318                 spin_lock_irqsave(&dev->event_lock, flags);
 319                 work = crtc->unpin_work;
 320                 if (work == NULL) {
 321                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 322                                    pipe, plane);
 323                 } else {
 324                         if (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
 325                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 326                                            pipe, plane);
 327                         } else {
 328                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 329                                            pipe, plane);
 330                         }
 331                         if (work->enable_stall_check)
 332                                 seq_printf(m, "Stall check enabled, ");
 333                         else
 334                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 335                         seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
 336
 337                         if (work->old_fb_obj) {
 338                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 339                                 if (obj)
 340                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 341                         }
 342                         if (work->pending_flip_obj) {
 343                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 344                                 if (obj)
 345                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 346                         }
 347                 }
 348                 spin_unlock_irqrestore(&dev->event_lock, flags);
 349         }
 350
 351         return 0;
 352 }
 353
 354 static int i915_gem_request_info(struct seq_file *m, void *data)
 355 {
 356         struct drm_info_node *node = (struct drm_info_node *) m->private;
 357         struct drm_device *dev = node->minor->dev;
 358         drm_i915_private_t *dev_priv = dev->dev_private;
 359         struct intel_ring_buffer *ring;
 360         struct drm_i915_gem_request *gem_request;
 361         int ret, count, i;
 362
 363         ret = mutex_lock_interruptible(&dev->struct_mutex);
 364         if (ret)
 365                 return ret;
 366
 367         count = 0;
 368         for_each_ring(ring, dev_priv, i) {
 369                 if (list_empty(&ring->request_list))
 370                         continue;
 371
 372                 seq_printf(m, "%s requests:\n", ring->name);
 373                 list_for_each_entry(gem_request,
 374                                     &ring->request_list,
 375                                     list) {
 376                         seq_printf(m, "    %d @ %d\n",
 377                                    gem_request->seqno,
 378                                    (int) (jiffies - gem_request->emitted_jiffies));
 379                 }
 380                 count++;
 381         }
 382         mutex_unlock(&dev->struct_mutex);
 383
 384         if (count == 0)
 385                 seq_printf(m, "No requests\n");
 386
 387         return 0;
 388 }
 389
 390 static void i915_ring_seqno_info(struct seq_file *m,
 391                                  struct intel_ring_buffer *ring)
 392 {
 393         if (ring->get_seqno) {
 394                 seq_printf(m, "Current sequence (%s): %u\n",
 395                            ring->name, ring->get_seqno(ring, false));
 396         }
 397 }
 398
 399 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 400 {
 401         struct drm_info_node *node = (struct drm_info_node *) m->private;
 402         struct drm_device *dev = node->minor->dev;
 403         drm_i915_private_t *dev_priv = dev->dev_private;
 404         struct intel_ring_buffer *ring;
 405         int ret, i;
 406
 407         ret = mutex_lock_interruptible(&dev->struct_mutex);
 408         if (ret)
 409                 return ret;
 410
 411         for_each_ring(ring, dev_priv, i)
 412                 i915_ring_seqno_info(m, ring);
 413
 414         mutex_unlock(&dev->struct_mutex);
 415
 416         return 0;
 417 }
 418
 419
 420 static int i915_interrupt_info(struct seq_file *m, void *data)
 421 {
 422         struct drm_info_node *node = (struct drm_info_node *) m->private;
 423         struct drm_device *dev = node->minor->dev;
 424         drm_i915_private_t *dev_priv = dev->dev_private;
 425         struct intel_ring_buffer *ring;
 426         int ret, i, pipe;
 427
 428         ret = mutex_lock_interruptible(&dev->struct_mutex);
 429         if (ret)
 430                 return ret;
 431
 432         if (IS_VALLEYVIEW(dev)) {
 433                 seq_printf(m, "Display IER:\t%08x\n",
 434                            I915_READ(VLV_IER));
 435                 seq_printf(m, "Display IIR:\t%08x\n",
 436                            I915_READ(VLV_IIR));
 437                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 438                            I915_READ(VLV_IIR_RW));
 439                 seq_printf(m, "Display IMR:\t%08x\n",
 440                            I915_READ(VLV_IMR));
 441                 for_each_pipe(pipe)
 442                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 443                                    pipe_name(pipe),
 444                                    I915_READ(PIPESTAT(pipe)));
 445
 446                 seq_printf(m, "Master IER:\t%08x\n",
 447                            I915_READ(VLV_MASTER_IER));
 448
 449                 seq_printf(m, "Render IER:\t%08x\n",
 450                            I915_READ(GTIER));
 451                 seq_printf(m, "Render IIR:\t%08x\n",
 452                            I915_READ(GTIIR));
 453                 seq_printf(m, "Render IMR:\t%08x\n",
 454                            I915_READ(GTIMR));
 455
 456                 seq_printf(m, "PM IER:\t\t%08x\n",
 457                            I915_READ(GEN6_PMIER));
 458                 seq_printf(m, "PM IIR:\t\t%08x\n",
 459                            I915_READ(GEN6_PMIIR));
 460                 seq_printf(m, "PM IMR:\t\t%08x\n",
 461                            I915_READ(GEN6_PMIMR));
 462
 463                 seq_printf(m, "Port hotplug:\t%08x\n",
 464                            I915_READ(PORT_HOTPLUG_EN));
 465                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 466                            I915_READ(VLV_DPFLIPSTAT));
 467                 seq_printf(m, "DPINVGTT:\t%08x\n",
 468                            I915_READ(DPINVGTT));
 469
 470         } else if (!HAS_PCH_SPLIT(dev)) {
 471                 seq_printf(m, "Interrupt enable:    %08x\n",
 472                            I915_READ(IER));
 473                 seq_printf(m, "Interrupt identity:  %08x\n",
 474                            I915_READ(IIR));
 475                 seq_printf(m, "Interrupt mask:      %08x\n",
 476                            I915_READ(IMR));
 477                 for_each_pipe(pipe)
 478                         seq_printf(m, "Pipe %c stat:         %08x\n",
 479                                    pipe_name(pipe),
 480                                    I915_READ(PIPESTAT(pipe)));
 481         } else {
 482                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 483                            I915_READ(DEIER));
 484                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 485                            I915_READ(DEIIR));
 486                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 487                            I915_READ(DEIMR));
 488                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 489                            I915_READ(SDEIER));
 490                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 491                            I915_READ(SDEIIR));
 492                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 493                            I915_READ(SDEIMR));
 494                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 495                            I915_READ(GTIER));
 496                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 497                            I915_READ(GTIIR));
 498                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 499                            I915_READ(GTIMR));
 500         }
 501         seq_printf(m, "Interrupts received: %d\n",
 502                    atomic_read(&dev_priv->irq_received));
 503         for_each_ring(ring, dev_priv, i) {
 504                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 505                         seq_printf(m,
 506                                    "Graphics Interrupt mask (%s):       %08x\n",
 507                                    ring->name, I915_READ_IMR(ring));
 508                 }
 509                 i915_ring_seqno_info(m, ring);
 510         }
 511         mutex_unlock(&dev->struct_mutex);
 512
 513         return 0;
 514 }
 515
 516 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 517 {
 518         struct drm_info_node *node = (struct drm_info_node *) m->private;
 519         struct drm_device *dev = node->minor->dev;
 520         drm_i915_private_t *dev_priv = dev->dev_private;
 521         int i, ret;
 522
 523         ret = mutex_lock_interruptible(&dev->struct_mutex);
 524         if (ret)
 525                 return ret;
 526
 527         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 528         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 529         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 530                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 531
 532                 seq_printf(m, "Fence %d, pin count = %d, object = ",
 533                            i, dev_priv->fence_regs[i].pin_count);
 534                 if (obj == NULL)
 535                         seq_printf(m, "unused");
 536                 else
 537                         describe_obj(m, obj);
 538                 seq_printf(m, "\n");
 539         }
 540
 541         mutex_unlock(&dev->struct_mutex);
 542         return 0;
 543 }
 544
 545 static int i915_hws_info(struct seq_file *m, void *data)
 546 {
 547         struct drm_info_node *node = (struct drm_info_node *) m->private;
 548         struct drm_device *dev = node->minor->dev;
 549         drm_i915_private_t *dev_priv = dev->dev_private;
 550         struct intel_ring_buffer *ring;
 551         const u32 *hws;
 552         int i;
 553
 554         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 555         hws = ring->status_page.page_addr;
 556         if (hws == NULL)
 557                 return 0;
 558
 559         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 560                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 561                            i * 4,
 562                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 563         }
 564         return 0;
 565 }
 566
 567 static const char *ring_str(int ring)
 568 {
 569         switch (ring) {
 570         case RCS: return "render";
 571         case VCS: return "bsd";
 572         case BCS: return "blt";
 573         default: return "";
 574         }
 575 }
 576
 577 static const char *pin_flag(int pinned)
 578 {
 579         if (pinned > 0)
 580                 return " P";
 581         else if (pinned < 0)
 582                 return " p";
 583         else
 584                 return "";
 585 }
 586
 587 static const char *tiling_flag(int tiling)
 588 {
 589         switch (tiling) {
 590         default:
 591         case I915_TILING_NONE: return "";
 592         case I915_TILING_X: return " X";
 593         case I915_TILING_Y: return " Y";
 594         }
 595 }
 596
 597 static const char *dirty_flag(int dirty)
 598 {
 599         return dirty ? " dirty" : "";
 600 }
 601
 602 static const char *purgeable_flag(int purgeable)
 603 {
 604         return purgeable ? " purgeable" : "";
 605 }
 606
 607 static void print_error_buffers(struct seq_file *m,
 608                                 const char *name,
 609                                 struct drm_i915_error_buffer *err,
 610                                 int count)
 611 {
 612         seq_printf(m, "%s [%d]:\n", name, count);
 613
 614         while (count--) {
 615                 seq_printf(m, "  %08x %8u %02x %02x %x %x%s%s%s%s%s%s%s",
 616                            err->gtt_offset,
 617                            err->size,
 618                            err->read_domains,
 619                            err->write_domain,
 620                            err->rseqno, err->wseqno,
 621                            pin_flag(err->pinned),
 622                            tiling_flag(err->tiling),
 623                            dirty_flag(err->dirty),
 624                            purgeable_flag(err->purgeable),
 625                            err->ring != -1 ? " " : "",
 626                            ring_str(err->ring),
 627                            cache_level_str(err->cache_level));
 628
 629                 if (err->name)
 630                         seq_printf(m, " (name: %d)", err->name);
 631                 if (err->fence_reg != I915_FENCE_REG_NONE)
 632                         seq_printf(m, " (fence: %d)", err->fence_reg);
 633
 634                 seq_printf(m, "\n");
 635                 err++;
 636         }
 637 }
 638
 639 static void i915_ring_error_state(struct seq_file *m,
 640                                   struct drm_device *dev,
 641                                   struct drm_i915_error_state *error,
 642                                   unsigned ring)
 643 {
 644         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
 645         seq_printf(m, "%s command stream:\n", ring_str(ring));
 646         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 647         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 648         seq_printf(m, "  CTL: 0x%08x\n", error->ctl[ring]);
 649         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 650         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 651         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 652         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 653         if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
 654                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 655
 656         if (INTEL_INFO(dev)->gen >= 4)
 657                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 658         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 659         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 660         if (INTEL_INFO(dev)->gen >= 6) {
 661                 seq_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
 662                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 663                 seq_printf(m, "  SYNC_0: 0x%08x [last synced 0x%08x]\n",
 664                            error->semaphore_mboxes[ring][0],
 665                            error->semaphore_seqno[ring][0]);
 666                 seq_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
 667                            error->semaphore_mboxes[ring][1],
 668                            error->semaphore_seqno[ring][1]);
 669         }
 670         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 671         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
 672         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 673         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 674 }
 675
 676 struct i915_error_state_file_priv {
 677         struct drm_device *dev;
 678         struct drm_i915_error_state *error;
 679 };
 680
 681 static int i915_error_state(struct seq_file *m, void *unused)
 682 {
 683         struct i915_error_state_file_priv *error_priv = m->private;
 684         struct drm_device *dev = error_priv->dev;
 685         drm_i915_private_t *dev_priv = dev->dev_private;
 686         struct drm_i915_error_state *error = error_priv->error;
 687         struct intel_ring_buffer *ring;
 688         int i, j, page, offset, elt;
 689
 690         if (!error) {
 691                 seq_printf(m, "no error state collected\n");
 692                 return 0;
 693         }
 694
 695         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 696                    error->time.tv_usec);
 697         seq_printf(m, "Kernel: " UTS_RELEASE "\n");
 698         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 699         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 700         seq_printf(m, "IER: 0x%08x\n", error->ier);
 701         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 702         seq_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
 703         seq_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
 704         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
 705
 706         for (i = 0; i < dev_priv->num_fence_regs; i++)
 707                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 708
 709         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
 710                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
 711
 712         if (INTEL_INFO(dev)->gen >= 6) {
 713                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 714                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 715         }
 716
 717         if (INTEL_INFO(dev)->gen == 7)
 718                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 719
 720         for_each_ring(ring, dev_priv, i)
 721                 i915_ring_error_state(m, dev, error, i);
 722
 723         if (error->active_bo)
 724                 print_error_buffers(m, "Active",
 725                                     error->active_bo,
 726                                     error->active_bo_count);
 727
 728         if (error->pinned_bo)
 729                 print_error_buffers(m, "Pinned",
 730                                     error->pinned_bo,
 731                                     error->pinned_bo_count);
 732
 733         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 734                 struct drm_i915_error_object *obj;
 735
 736                 if ((obj = error->ring[i].batchbuffer)) {
 737                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 738                                    dev_priv->ring[i].name,
 739                                    obj->gtt_offset);
 740                         offset = 0;
 741                         for (page = 0; page < obj->page_count; page++) {
 742                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 743                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 744                                         offset += 4;
 745                                 }
 746                         }
 747                 }
 748
 749                 if (error->ring[i].num_requests) {
 750                         seq_printf(m, "%s --- %d requests\n",
 751                                    dev_priv->ring[i].name,
 752                                    error->ring[i].num_requests);
 753                         for (j = 0; j < error->ring[i].num_requests; j++) {
 754                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 755                                            error->ring[i].requests[j].seqno,
 756                                            error->ring[i].requests[j].jiffies,
 757                                            error->ring[i].requests[j].tail);
 758                         }
 759                 }
 760
 761                 if ((obj = error->ring[i].ringbuffer)) {
 762                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 763                                    dev_priv->ring[i].name,
 764                                    obj->gtt_offset);
 765                         offset = 0;
 766                         for (page = 0; page < obj->page_count; page++) {
 767                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 768                                         seq_printf(m, "%08x :  %08x\n",
 769                                                    offset,
 770                                                    obj->pages[page][elt]);
 771                                         offset += 4;
 772                                 }
 773                         }
 774                 }
 775         }
 776
 777         if (error->overlay)
 778                 intel_overlay_print_error_state(m, error->overlay);
 779
 780         if (error->display)
 781                 intel_display_print_error_state(m, dev, error->display);
 782
 783         return 0;
 784 }
 785
 786 static ssize_t
 787 i915_error_state_write(struct file *filp,
 788                        const char __user *ubuf,
 789                        size_t cnt,
 790                        loff_t *ppos)
 791 {
 792         struct seq_file *m = filp->private_data;
 793         struct i915_error_state_file_priv *error_priv = m->private;
 794         struct drm_device *dev = error_priv->dev;
 795         int ret;
 796
 797         DRM_DEBUG_DRIVER("Resetting error state\n");
 798
 799         ret = mutex_lock_interruptible(&dev->struct_mutex);
 800         if (ret)
 801                 return ret;
 802
 803         i915_destroy_error_state(dev);
 804         mutex_unlock(&dev->struct_mutex);
 805
 806         return cnt;
 807 }
 808
 809 static int i915_error_state_open(struct inode *inode, struct file *file)
 810 {
 811         struct drm_device *dev = inode->i_private;
 812         drm_i915_private_t *dev_priv = dev->dev_private;
 813         struct i915_error_state_file_priv *error_priv;
 814         unsigned long flags;
 815
 816         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 817         if (!error_priv)
 818                 return -ENOMEM;
 819
 820         error_priv->dev = dev;
 821
 822         spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
 823         error_priv->error = dev_priv->gpu_error.first_error;
 824         if (error_priv->error)
 825                 kref_get(&error_priv->error->ref);
 826         spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
 827
 828         return single_open(file, i915_error_state, error_priv);
 829 }
 830
 831 static int i915_error_state_release(struct inode *inode, struct file *file)
 832 {
 833         struct seq_file *m = file->private_data;
 834         struct i915_error_state_file_priv *error_priv = m->private;
 835
 836         if (error_priv->error)
 837                 kref_put(&error_priv->error->ref, i915_error_state_free);
 838         kfree(error_priv);
 839
 840         return single_release(inode, file);
 841 }
 842
 843 static const struct file_operations i915_error_state_fops = {
 844         .owner = THIS_MODULE,
 845         .open = i915_error_state_open,
 846         .read = seq_read,
 847         .write = i915_error_state_write,
 848         .llseek = default_llseek,
 849         .release = i915_error_state_release,
 850 };
 851
 852 static ssize_t
 853 i915_next_seqno_read(struct file *filp,
 854                  char __user *ubuf,
 855                  size_t max,
 856                  loff_t *ppos)
 857 {
 858         struct drm_device *dev = filp->private_data;
 859         drm_i915_private_t *dev_priv = dev->dev_private;
 860         char buf[80];
 861         int len;
 862         int ret;
 863
 864         ret = mutex_lock_interruptible(&dev->struct_mutex);
 865         if (ret)
 866                 return ret;
 867
 868         len = snprintf(buf, sizeof(buf),
 869                        "next_seqno :  0x%x\n",
 870                        dev_priv->next_seqno);
 871
 872         mutex_unlock(&dev->struct_mutex);
 873
 874         if (len > sizeof(buf))
 875                 len = sizeof(buf);
 876
 877         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 878 }
 879
 880 static ssize_t
 881 i915_next_seqno_write(struct file *filp,
 882                       const char __user *ubuf,
 883                       size_t cnt,
 884                       loff_t *ppos)
 885 {
 886         struct drm_device *dev = filp->private_data;
 887         char buf[20];
 888         u32 val = 1;
 889         int ret;
 890
 891         if (cnt > 0) {
 892                 if (cnt > sizeof(buf) - 1)
 893                         return -EINVAL;
 894
 895                 if (copy_from_user(buf, ubuf, cnt))
 896                         return -EFAULT;
 897                 buf[cnt] = 0;
 898
 899                 ret = kstrtouint(buf, 0, &val);
 900                 if (ret < 0)
 901                         return ret;
 902         }
 903
 904         ret = mutex_lock_interruptible(&dev->struct_mutex);
 905         if (ret)
 906                 return ret;
 907
 908         ret = i915_gem_set_seqno(dev, val);
 909
 910         mutex_unlock(&dev->struct_mutex);
 911
 912         return ret ?: cnt;
 913 }
 914
 915 static const struct file_operations i915_next_seqno_fops = {
 916         .owner = THIS_MODULE,
 917         .open = simple_open,
 918         .read = i915_next_seqno_read,
 919         .write = i915_next_seqno_write,
 920         .llseek = default_llseek,
 921 };
 922
 923 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 924 {
 925         struct drm_info_node *node = (struct drm_info_node *) m->private;
 926         struct drm_device *dev = node->minor->dev;
 927         drm_i915_private_t *dev_priv = dev->dev_private;
 928         u16 crstanddelay;
 929         int ret;
 930
 931         ret = mutex_lock_interruptible(&dev->struct_mutex);
 932         if (ret)
 933                 return ret;
 934
 935         crstanddelay = I915_READ16(CRSTANDVID);
 936
 937         mutex_unlock(&dev->struct_mutex);
 938
 939         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 940
 941         return 0;
 942 }
 943
 944 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 945 {
 946         struct drm_info_node *node = (struct drm_info_node *) m->private;
 947         struct drm_device *dev = node->minor->dev;
 948         drm_i915_private_t *dev_priv = dev->dev_private;
 949         int ret;
 950
 951         if (IS_GEN5(dev)) {
 952                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 953                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 954
 955                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 956                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 957                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 958                            MEMSTAT_VID_SHIFT);
 959                 seq_printf(m, "Current P-state: %d\n",
 960                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 961         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 962                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 963                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 964                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 965                 u32 rpstat, cagf;
 966                 u32 rpupei, rpcurup, rpprevup;
 967                 u32 rpdownei, rpcurdown, rpprevdown;
 968                 int max_freq;
 969
 970                 /* RPSTAT1 is in the GT power well */
 971                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 972                 if (ret)
 973                         return ret;
 974
 975                 gen6_gt_force_wake_get(dev_priv);
 976
 977                 rpstat = I915_READ(GEN6_RPSTAT1);
 978                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 979                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 980                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 981                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 982                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 983                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 984                 if (IS_HASWELL(dev))
 985                         cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
 986                 else
 987                         cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
 988                 cagf *= GT_FREQUENCY_MULTIPLIER;
 989
 990                 gen6_gt_force_wake_put(dev_priv);
 991                 mutex_unlock(&dev->struct_mutex);
 992
 993                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 994                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 995                 seq_printf(m, "Render p-state ratio: %d\n",
 996                            (gt_perf_status & 0xff00) >> 8);
 997                 seq_printf(m, "Render p-state VID: %d\n",
 998                            gt_perf_status & 0xff);
 999                 seq_printf(m, "Render p-state limit: %d\n",
1000                            rp_state_limits & 0xff);
1001                 seq_printf(m, "CAGF: %dMHz\n", cagf);
1002                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
1003                            GEN6_CURICONT_MASK);
1004                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
1005                            GEN6_CURBSYTAVG_MASK);
1006                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
1007                            GEN6_CURBSYTAVG_MASK);
1008                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
1009                            GEN6_CURIAVG_MASK);
1010                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
1011                            GEN6_CURBSYTAVG_MASK);
1012                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
1013                            GEN6_CURBSYTAVG_MASK);
1014
1015                 max_freq = (rp_state_cap & 0xff0000) >> 16;
1016                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
1017                            max_freq * GT_FREQUENCY_MULTIPLIER);
1018
1019                 max_freq = (rp_state_cap & 0xff00) >> 8;
1020                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
1021                            max_freq * GT_FREQUENCY_MULTIPLIER);
1022
1023                 max_freq = rp_state_cap & 0xff;
1024                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
1025                            max_freq * GT_FREQUENCY_MULTIPLIER);
1026         } else {
1027                 seq_printf(m, "no P-state info available\n");
1028         }
1029
1030         return 0;
1031 }
1032
1033 static int i915_delayfreq_table(struct seq_file *m, void *unused)
1034 {
1035         struct drm_info_node *node = (struct drm_info_node *) m->private;
1036         struct drm_device *dev = node->minor->dev;
1037         drm_i915_private_t *dev_priv = dev->dev_private;
1038         u32 delayfreq;
1039         int ret, i;
1040
1041         ret = mutex_lock_interruptible(&dev->struct_mutex);
1042         if (ret)
1043                 return ret;
1044
1045         for (i = 0; i < 16; i++) {
1046                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
1047                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
1048                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
1049         }
1050
1051         mutex_unlock(&dev->struct_mutex);
1052
1053         return 0;
1054 }
1055
1056 static inline int MAP_TO_MV(int map)
1057 {
1058         return 1250 - (map * 25);
1059 }
1060
1061 static int i915_inttoext_table(struct seq_file *m, void *unused)
1062 {
1063         struct drm_info_node *node = (struct drm_info_node *) m->private;
1064         struct drm_device *dev = node->minor->dev;
1065         drm_i915_private_t *dev_priv = dev->dev_private;
1066         u32 inttoext;
1067         int ret, i;
1068
1069         ret = mutex_lock_interruptible(&dev->struct_mutex);
1070         if (ret)
1071                 return ret;
1072
1073         for (i = 1; i <= 32; i++) {
1074                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
1075                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
1076         }
1077
1078         mutex_unlock(&dev->struct_mutex);
1079
1080         return 0;
1081 }
1082
1083 static int ironlake_drpc_info(struct seq_file *m)
1084 {
1085         struct drm_info_node *node = (struct drm_info_node *) m->private;
1086         struct drm_device *dev = node->minor->dev;
1087         drm_i915_private_t *dev_priv = dev->dev_private;
1088         u32 rgvmodectl, rstdbyctl;
1089         u16 crstandvid;
1090         int ret;
1091
1092         ret = mutex_lock_interruptible(&dev->struct_mutex);
1093         if (ret)
1094                 return ret;
1095
1096         rgvmodectl = I915_READ(MEMMODECTL);
1097         rstdbyctl = I915_READ(RSTDBYCTL);
1098         crstandvid = I915_READ16(CRSTANDVID);
1099
1100         mutex_unlock(&dev->struct_mutex);
1101
1102         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1103                    "yes" : "no");
1104         seq_printf(m, "Boost freq: %d\n",
1105                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1106                    MEMMODE_BOOST_FREQ_SHIFT);
1107         seq_printf(m, "HW control enabled: %s\n",
1108                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1109         seq_printf(m, "SW control enabled: %s\n",
1110                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1111         seq_printf(m, "Gated voltage change: %s\n",
1112                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1113         seq_printf(m, "Starting frequency: P%d\n",
1114                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1115         seq_printf(m, "Max P-state: P%d\n",
1116                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1117         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1118         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1119         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1120         seq_printf(m, "Render standby enabled: %s\n",
1121                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1122         seq_printf(m, "Current RS state: ");
1123         switch (rstdbyctl & RSX_STATUS_MASK) {
1124         case RSX_STATUS_ON:
1125                 seq_printf(m, "on\n");
1126                 break;
1127         case RSX_STATUS_RC1:
1128                 seq_printf(m, "RC1\n");
1129                 break;
1130         case RSX_STATUS_RC1E:
1131                 seq_printf(m, "RC1E\n");
1132                 break;
1133         case RSX_STATUS_RS1:
1134                 seq_printf(m, "RS1\n");
1135                 break;
1136         case RSX_STATUS_RS2:
1137                 seq_printf(m, "RS2 (RC6)\n");
1138                 break;
1139         case RSX_STATUS_RS3:
1140                 seq_printf(m, "RC3 (RC6+)\n");
1141                 break;
1142         default:
1143                 seq_printf(m, "unknown\n");
1144                 break;
1145         }
1146
1147         return 0;
1148 }
1149
1150 static int gen6_drpc_info(struct seq_file *m)
1151 {
1152
1153         struct drm_info_node *node = (struct drm_info_node *) m->private;
1154         struct drm_device *dev = node->minor->dev;
1155         struct drm_i915_private *dev_priv = dev->dev_private;
1156         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1157         unsigned forcewake_count;
1158         int count=0, ret;
1159
1160
1161         ret = mutex_lock_interruptible(&dev->struct_mutex);
1162         if (ret)
1163                 return ret;
1164
1165         spin_lock_irq(&dev_priv->gt_lock);
1166         forcewake_count = dev_priv->forcewake_count;
1167         spin_unlock_irq(&dev_priv->gt_lock);
1168
1169         if (forcewake_count) {
1170                 seq_printf(m, "RC information inaccurate because somebody "
1171                               "holds a forcewake reference \n");
1172         } else {
1173                 /* NB: we cannot use forcewake, else we read the wrong values */
1174                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1175                         udelay(10);
1176                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1177         }
1178
1179         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1180         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1181
1182         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1183         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1184         mutex_unlock(&dev->struct_mutex);
1185         mutex_lock(&dev_priv->rps.hw_lock);
1186         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1187         mutex_unlock(&dev_priv->rps.hw_lock);
1188
1189         seq_printf(m, "Video Turbo Mode: %s\n",
1190                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1191         seq_printf(m, "HW control enabled: %s\n",
1192                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1193         seq_printf(m, "SW control enabled: %s\n",
1194                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1195                           GEN6_RP_MEDIA_SW_MODE));
1196         seq_printf(m, "RC1e Enabled: %s\n",
1197                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1198         seq_printf(m, "RC6 Enabled: %s\n",
1199                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1200         seq_printf(m, "Deep RC6 Enabled: %s\n",
1201                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1202         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1203                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1204         seq_printf(m, "Current RC state: ");
1205         switch (gt_core_status & GEN6_RCn_MASK) {
1206         case GEN6_RC0:
1207                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1208                         seq_printf(m, "Core Power Down\n");
1209                 else
1210                         seq_printf(m, "on\n");
1211                 break;
1212         case GEN6_RC3:
1213                 seq_printf(m, "RC3\n");
1214                 break;
1215         case GEN6_RC6:
1216                 seq_printf(m, "RC6\n");
1217                 break;
1218         case GEN6_RC7:
1219                 seq_printf(m, "RC7\n");
1220                 break;
1221         default:
1222                 seq_printf(m, "Unknown\n");
1223                 break;
1224         }
1225
1226         seq_printf(m, "Core Power Down: %s\n",
1227                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1228
1229         /* Not exactly sure what this is */
1230         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1231                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1232         seq_printf(m, "RC6 residency since boot: %u\n",
1233                    I915_READ(GEN6_GT_GFX_RC6));
1234         seq_printf(m, "RC6+ residency since boot: %u\n",
1235                    I915_READ(GEN6_GT_GFX_RC6p));
1236         seq_printf(m, "RC6++ residency since boot: %u\n",
1237                    I915_READ(GEN6_GT_GFX_RC6pp));
1238
1239         seq_printf(m, "RC6   voltage: %dmV\n",
1240                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1241         seq_printf(m, "RC6+  voltage: %dmV\n",
1242                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1243         seq_printf(m, "RC6++ voltage: %dmV\n",
1244                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1245         return 0;
1246 }
1247
1248 static int i915_drpc_info(struct seq_file *m, void *unused)
1249 {
1250         struct drm_info_node *node = (struct drm_info_node *) m->private;
1251         struct drm_device *dev = node->minor->dev;
1252
1253         if (IS_GEN6(dev) || IS_GEN7(dev))
1254                 return gen6_drpc_info(m);
1255         else
1256                 return ironlake_drpc_info(m);
1257 }
1258
1259 static int i915_fbc_status(struct seq_file *m, void *unused)
1260 {
1261         struct drm_info_node *node = (struct drm_info_node *) m->private;
1262         struct drm_device *dev = node->minor->dev;
1263         drm_i915_private_t *dev_priv = dev->dev_private;
1264
1265         if (!I915_HAS_FBC(dev)) {
1266                 seq_printf(m, "FBC unsupported on this chipset\n");
1267                 return 0;
1268         }
1269
1270         if (intel_fbc_enabled(dev)) {
1271                 seq_printf(m, "FBC enabled\n");
1272         } else {
1273                 seq_printf(m, "FBC disabled: ");
1274                 switch (dev_priv->no_fbc_reason) {
1275                 case FBC_NO_OUTPUT:
1276                         seq_printf(m, "no outputs");
1277                         break;
1278                 case FBC_STOLEN_TOO_SMALL:
1279                         seq_printf(m, "not enough stolen memory");
1280                         break;
1281                 case FBC_UNSUPPORTED_MODE:
1282                         seq_printf(m, "mode not supported");
1283                         break;
1284                 case FBC_MODE_TOO_LARGE:
1285                         seq_printf(m, "mode too large");
1286                         break;
1287                 case FBC_BAD_PLANE:
1288                         seq_printf(m, "FBC unsupported on plane");
1289                         break;
1290                 case FBC_NOT_TILED:
1291                         seq_printf(m, "scanout buffer not tiled");
1292                         break;
1293                 case FBC_MULTIPLE_PIPES:
1294                         seq_printf(m, "multiple pipes are enabled");
1295                         break;
1296                 case FBC_MODULE_PARAM:
1297                         seq_printf(m, "disabled per module param (default off)");
1298                         break;
1299                 default:
1300                         seq_printf(m, "unknown reason");
1301                 }
1302                 seq_printf(m, "\n");
1303         }
1304         return 0;
1305 }
1306
1307 static int i915_sr_status(struct seq_file *m, void *unused)
1308 {
1309         struct drm_info_node *node = (struct drm_info_node *) m->private;
1310         struct drm_device *dev = node->minor->dev;
1311         drm_i915_private_t *dev_priv = dev->dev_private;
1312         bool sr_enabled = false;
1313
1314         if (HAS_PCH_SPLIT(dev))
1315                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1316         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1317                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1318         else if (IS_I915GM(dev))
1319                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1320         else if (IS_PINEVIEW(dev))
1321                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1322
1323         seq_printf(m, "self-refresh: %s\n",
1324                    sr_enabled ? "enabled" : "disabled");
1325
1326         return 0;
1327 }
1328
1329 static int i915_emon_status(struct seq_file *m, void *unused)
1330 {
1331         struct drm_info_node *node = (struct drm_info_node *) m->private;
1332         struct drm_device *dev = node->minor->dev;
1333         drm_i915_private_t *dev_priv = dev->dev_private;
1334         unsigned long temp, chipset, gfx;
1335         int ret;
1336
1337         if (!IS_GEN5(dev))
1338                 return -ENODEV;
1339
1340         ret = mutex_lock_interruptible(&dev->struct_mutex);
1341         if (ret)
1342                 return ret;
1343
1344         temp = i915_mch_val(dev_priv);
1345         chipset = i915_chipset_val(dev_priv);
1346         gfx = i915_gfx_val(dev_priv);
1347         mutex_unlock(&dev->struct_mutex);
1348
1349         seq_printf(m, "GMCH temp: %ld\n", temp);
1350         seq_printf(m, "Chipset power: %ld\n", chipset);
1351         seq_printf(m, "GFX power: %ld\n", gfx);
1352         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1353
1354         return 0;
1355 }
1356
1357 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1358 {
1359         struct drm_info_node *node = (struct drm_info_node *) m->private;
1360         struct drm_device *dev = node->minor->dev;
1361         drm_i915_private_t *dev_priv = dev->dev_private;
1362         int ret;
1363         int gpu_freq, ia_freq;
1364
1365         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1366                 seq_printf(m, "unsupported on this chipset\n");
1367                 return 0;
1368         }
1369
1370         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1371         if (ret)
1372                 return ret;
1373
1374         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1375
1376         for (gpu_freq = dev_priv->rps.min_delay;
1377              gpu_freq <= dev_priv->rps.max_delay;
1378              gpu_freq++) {
1379                 ia_freq = gpu_freq;
1380                 sandybridge_pcode_read(dev_priv,
1381                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1382                                        &ia_freq);
1383                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1384         }
1385
1386         mutex_unlock(&dev_priv->rps.hw_lock);
1387
1388         return 0;
1389 }
1390
1391 static int i915_gfxec(struct seq_file *m, void *unused)
1392 {
1393         struct drm_info_node *node = (struct drm_info_node *) m->private;
1394         struct drm_device *dev = node->minor->dev;
1395         drm_i915_private_t *dev_priv = dev->dev_private;
1396         int ret;
1397
1398         ret = mutex_lock_interruptible(&dev->struct_mutex);
1399         if (ret)
1400                 return ret;
1401
1402         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1403
1404         mutex_unlock(&dev->struct_mutex);
1405
1406         return 0;
1407 }
1408
1409 static int i915_opregion(struct seq_file *m, void *unused)
1410 {
1411         struct drm_info_node *node = (struct drm_info_node *) m->private;
1412         struct drm_device *dev = node->minor->dev;
1413         drm_i915_private_t *dev_priv = dev->dev_private;
1414         struct intel_opregion *opregion = &dev_priv->opregion;
1415         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1416         int ret;
1417
1418         if (data == NULL)
1419                 return -ENOMEM;
1420
1421         ret = mutex_lock_interruptible(&dev->struct_mutex);
1422         if (ret)
1423                 goto out;
1424
1425         if (opregion->header) {
1426                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1427                 seq_write(m, data, OPREGION_SIZE);
1428         }
1429
1430         mutex_unlock(&dev->struct_mutex);
1431
1432 out:
1433         kfree(data);
1434         return 0;
1435 }
1436
1437 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1438 {
1439         struct drm_info_node *node = (struct drm_info_node *) m->private;
1440         struct drm_device *dev = node->minor->dev;
1441         drm_i915_private_t *dev_priv = dev->dev_private;
1442         struct intel_fbdev *ifbdev;
1443         struct intel_framebuffer *fb;
1444         int ret;
1445
1446         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1447         if (ret)
1448                 return ret;
1449
1450         ifbdev = dev_priv->fbdev;
1451         fb = to_intel_framebuffer(ifbdev->helper.fb);
1452
1453         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
1454                    fb->base.width,
1455                    fb->base.height,
1456                    fb->base.depth,
1457                    fb->base.bits_per_pixel,
1458                    atomic_read(&fb->base.refcount.refcount));
1459         describe_obj(m, fb->obj);
1460         seq_printf(m, "\n");
1461         mutex_unlock(&dev->mode_config.mutex);
1462
1463         mutex_lock(&dev->mode_config.fb_lock);
1464         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1465                 if (&fb->base == ifbdev->helper.fb)
1466                         continue;
1467
1468                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
1469                            fb->base.width,
1470                            fb->base.height,
1471                            fb->base.depth,
1472                            fb->base.bits_per_pixel,
1473                            atomic_read(&fb->base.refcount.refcount));
1474                 describe_obj(m, fb->obj);
1475                 seq_printf(m, "\n");
1476         }
1477         mutex_unlock(&dev->mode_config.fb_lock);
1478
1479         return 0;
1480 }
1481
1482 static int i915_context_status(struct seq_file *m, void *unused)
1483 {
1484         struct drm_info_node *node = (struct drm_info_node *) m->private;
1485         struct drm_device *dev = node->minor->dev;
1486         drm_i915_private_t *dev_priv = dev->dev_private;
1487         struct intel_ring_buffer *ring;
1488         int ret, i;
1489
1490         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1491         if (ret)
1492                 return ret;
1493
1494         if (dev_priv->ips.pwrctx) {
1495                 seq_printf(m, "power context ");
1496                 describe_obj(m, dev_priv->ips.pwrctx);
1497                 seq_printf(m, "\n");
1498         }
1499
1500         if (dev_priv->ips.renderctx) {
1501                 seq_printf(m, "render context ");
1502                 describe_obj(m, dev_priv->ips.renderctx);
1503                 seq_printf(m, "\n");
1504         }
1505
1506         for_each_ring(ring, dev_priv, i) {
1507                 if (ring->default_context) {
1508                         seq_printf(m, "HW default context %s ring ", ring->name);
1509                         describe_obj(m, ring->default_context->obj);
1510                         seq_printf(m, "\n");
1511                 }
1512         }
1513
1514         mutex_unlock(&dev->mode_config.mutex);
1515
1516         return 0;
1517 }
1518
1519 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1520 {
1521         struct drm_info_node *node = (struct drm_info_node *) m->private;
1522         struct drm_device *dev = node->minor->dev;
1523         struct drm_i915_private *dev_priv = dev->dev_private;
1524         unsigned forcewake_count;
1525
1526         spin_lock_irq(&dev_priv->gt_lock);
1527         forcewake_count = dev_priv->forcewake_count;
1528         spin_unlock_irq(&dev_priv->gt_lock);
1529
1530         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1531
1532         return 0;
1533 }
1534
1535 static const char *swizzle_string(unsigned swizzle)
1536 {
1537         switch(swizzle) {
1538         case I915_BIT_6_SWIZZLE_NONE:
1539                 return "none";
1540         case I915_BIT_6_SWIZZLE_9:
1541                 return "bit9";
1542         case I915_BIT_6_SWIZZLE_9_10:
1543                 return "bit9/bit10";
1544         case I915_BIT_6_SWIZZLE_9_11:
1545                 return "bit9/bit11";
1546         case I915_BIT_6_SWIZZLE_9_10_11:
1547                 return "bit9/bit10/bit11";
1548         case I915_BIT_6_SWIZZLE_9_17:
1549                 return "bit9/bit17";
1550         case I915_BIT_6_SWIZZLE_9_10_17:
1551                 return "bit9/bit10/bit17";
1552         case I915_BIT_6_SWIZZLE_UNKNOWN:
1553                 return "unknown";
1554         }
1555
1556         return "bug";
1557 }
1558
1559 static int i915_swizzle_info(struct seq_file *m, void *data)
1560 {
1561         struct drm_info_node *node = (struct drm_info_node *) m->private;
1562         struct drm_device *dev = node->minor->dev;
1563         struct drm_i915_private *dev_priv = dev->dev_private;
1564         int ret;
1565
1566         ret = mutex_lock_interruptible(&dev->struct_mutex);
1567         if (ret)
1568                 return ret;
1569
1570         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1571                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1572         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1573                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1574
1575         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1576                 seq_printf(m, "DDC = 0x%08x\n",
1577                            I915_READ(DCC));
1578                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1579                            I915_READ16(C0DRB3));
1580                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1581                            I915_READ16(C1DRB3));
1582         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1583                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1584                            I915_READ(MAD_DIMM_C0));
1585                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1586                            I915_READ(MAD_DIMM_C1));
1587                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1588                            I915_READ(MAD_DIMM_C2));
1589                 seq_printf(m, "TILECTL = 0x%08x\n",
1590                            I915_READ(TILECTL));
1591                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1592                            I915_READ(ARB_MODE));
1593                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1594                            I915_READ(DISP_ARB_CTL));
1595         }
1596         mutex_unlock(&dev->struct_mutex);
1597
1598         return 0;
1599 }
1600
1601 static int i915_ppgtt_info(struct seq_file *m, void *data)
1602 {
1603         struct drm_info_node *node = (struct drm_info_node *) m->private;
1604         struct drm_device *dev = node->minor->dev;
1605         struct drm_i915_private *dev_priv = dev->dev_private;
1606         struct intel_ring_buffer *ring;
1607         int i, ret;
1608
1609
1610         ret = mutex_lock_interruptible(&dev->struct_mutex);
1611         if (ret)
1612                 return ret;
1613         if (INTEL_INFO(dev)->gen == 6)
1614                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1615
1616         for_each_ring(ring, dev_priv, i) {
1617                 seq_printf(m, "%s\n", ring->name);
1618                 if (INTEL_INFO(dev)->gen == 7)
1619                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1620                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1621                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1622                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1623         }
1624         if (dev_priv->mm.aliasing_ppgtt) {
1625                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1626
1627                 seq_printf(m, "aliasing PPGTT:\n");
1628                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1629         }
1630         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1631         mutex_unlock(&dev->struct_mutex);
1632
1633         return 0;
1634 }
1635
1636 static int i915_dpio_info(struct seq_file *m, void *data)
1637 {
1638         struct drm_info_node *node = (struct drm_info_node *) m->private;
1639         struct drm_device *dev = node->minor->dev;
1640         struct drm_i915_private *dev_priv = dev->dev_private;
1641         int ret;
1642
1643
1644         if (!IS_VALLEYVIEW(dev)) {
1645                 seq_printf(m, "unsupported\n");
1646                 return 0;
1647         }
1648
1649         ret = mutex_lock_interruptible(&dev_priv->dpio_lock);
1650         if (ret)
1651                 return ret;
1652
1653         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1654
1655         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1656                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1657         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1658                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1659
1660         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1661                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1662         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1663                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1664
1665         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1666                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1667         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1668                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1669
1670         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1671                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1672         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1673                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1674
1675         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1676                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1677
1678         mutex_unlock(&dev_priv->dpio_lock);
1679
1680         return 0;
1681 }
1682
1683 static ssize_t
1684 i915_wedged_read(struct file *filp,
1685                  char __user *ubuf,
1686                  size_t max,
1687                  loff_t *ppos)
1688 {
1689         struct drm_device *dev = filp->private_data;
1690         drm_i915_private_t *dev_priv = dev->dev_private;
1691         char buf[80];
1692         int len;
1693
1694         len = snprintf(buf, sizeof(buf),
1695                        "wedged :  %d\n",
1696                        atomic_read(&dev_priv->gpu_error.reset_counter));
1697
1698         if (len > sizeof(buf))
1699                 len = sizeof(buf);
1700
1701         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1702 }
1703
1704 static ssize_t
1705 i915_wedged_write(struct file *filp,
1706                   const char __user *ubuf,
1707                   size_t cnt,
1708                   loff_t *ppos)
1709 {
1710         struct drm_device *dev = filp->private_data;
1711         char buf[20];
1712         int val = 1;
1713
1714         if (cnt > 0) {
1715                 if (cnt > sizeof(buf) - 1)
1716                         return -EINVAL;
1717
1718                 if (copy_from_user(buf, ubuf, cnt))
1719                         return -EFAULT;
1720                 buf[cnt] = 0;
1721
1722                 val = simple_strtoul(buf, NULL, 0);
1723         }
1724
1725         DRM_INFO("Manually setting wedged to %d\n", val);
1726         i915_handle_error(dev, val);
1727
1728         return cnt;
1729 }
1730
1731 static const struct file_operations i915_wedged_fops = {
1732         .owner = THIS_MODULE,
1733         .open = simple_open,
1734         .read = i915_wedged_read,
1735         .write = i915_wedged_write,
1736         .llseek = default_llseek,
1737 };
1738
1739 static ssize_t
1740 i915_ring_stop_read(struct file *filp,
1741                     char __user *ubuf,
1742                     size_t max,
1743                     loff_t *ppos)
1744 {
1745         struct drm_device *dev = filp->private_data;
1746         drm_i915_private_t *dev_priv = dev->dev_private;
1747         char buf[20];
1748         int len;
1749
1750         len = snprintf(buf, sizeof(buf),
1751                        "0x%08x\n", dev_priv->gpu_error.stop_rings);
1752
1753         if (len > sizeof(buf))
1754                 len = sizeof(buf);
1755
1756         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1757 }
1758
1759 static ssize_t
1760 i915_ring_stop_write(struct file *filp,
1761                      const char __user *ubuf,
1762                      size_t cnt,
1763                      loff_t *ppos)
1764 {
1765         struct drm_device *dev = filp->private_data;
1766         struct drm_i915_private *dev_priv = dev->dev_private;
1767         char buf[20];
1768         int val = 0, ret;
1769
1770         if (cnt > 0) {
1771                 if (cnt > sizeof(buf) - 1)
1772                         return -EINVAL;
1773
1774                 if (copy_from_user(buf, ubuf, cnt))
1775                         return -EFAULT;
1776                 buf[cnt] = 0;
1777
1778                 val = simple_strtoul(buf, NULL, 0);
1779         }
1780
1781         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1782
1783         ret = mutex_lock_interruptible(&dev->struct_mutex);
1784         if (ret)
1785                 return ret;
1786
1787         dev_priv->gpu_error.stop_rings = val;
1788         mutex_unlock(&dev->struct_mutex);
1789
1790         return cnt;
1791 }
1792
1793 static const struct file_operations i915_ring_stop_fops = {
1794         .owner = THIS_MODULE,
1795         .open = simple_open,
1796         .read = i915_ring_stop_read,
1797         .write = i915_ring_stop_write,
1798         .llseek = default_llseek,
1799 };
1800
1801 #define DROP_UNBOUND 0x1
1802 #define DROP_BOUND 0x2
1803 #define DROP_RETIRE 0x4
1804 #define DROP_ACTIVE 0x8
1805 #define DROP_ALL (DROP_UNBOUND | \
1806                   DROP_BOUND | \
1807                   DROP_RETIRE | \
1808                   DROP_ACTIVE)
1809 static ssize_t
1810 i915_drop_caches_read(struct file *filp,
1811                       char __user *ubuf,
1812                       size_t max,
1813                       loff_t *ppos)
1814 {
1815         char buf[20];
1816         int len;
1817
1818         len = snprintf(buf, sizeof(buf), "0x%08x\n", DROP_ALL);
1819         if (len > sizeof(buf))
1820                 len = sizeof(buf);
1821
1822         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1823 }
1824
1825 static ssize_t
1826 i915_drop_caches_write(struct file *filp,
1827                        const char __user *ubuf,
1828                        size_t cnt,
1829                        loff_t *ppos)
1830 {
1831         struct drm_device *dev = filp->private_data;
1832         struct drm_i915_private *dev_priv = dev->dev_private;
1833         struct drm_i915_gem_object *obj, *next;
1834         char buf[20];
1835         int val = 0, ret;
1836
1837         if (cnt > 0) {
1838                 if (cnt > sizeof(buf) - 1)
1839                         return -EINVAL;
1840
1841                 if (copy_from_user(buf, ubuf, cnt))
1842                         return -EFAULT;
1843                 buf[cnt] = 0;
1844
1845                 val = simple_strtoul(buf, NULL, 0);
1846         }
1847
1848         DRM_DEBUG_DRIVER("Dropping caches: 0x%08x\n", val);
1849
1850         /* No need to check and wait for gpu resets, only libdrm auto-restarts
1851          * on ioctls on -EAGAIN. */
1852         ret = mutex_lock_interruptible(&dev->struct_mutex);
1853         if (ret)
1854                 return ret;
1855
1856         if (val & DROP_ACTIVE) {
1857                 ret = i915_gpu_idle(dev);
1858                 if (ret)
1859                         goto unlock;
1860         }
1861
1862         if (val & (DROP_RETIRE | DROP_ACTIVE))
1863                 i915_gem_retire_requests(dev);
1864
1865         if (val & DROP_BOUND) {
1866                 list_for_each_entry_safe(obj, next, &dev_priv->mm.inactive_list, mm_list)
1867                         if (obj->pin_count == 0) {
1868                                 ret = i915_gem_object_unbind(obj);
1869                                 if (ret)
1870                                         goto unlock;
1871                         }
1872         }
1873
1874         if (val & DROP_UNBOUND) {
1875                 list_for_each_entry_safe(obj, next, &dev_priv->mm.unbound_list, gtt_list)
1876                         if (obj->pages_pin_count == 0) {
1877                                 ret = i915_gem_object_put_pages(obj);
1878                                 if (ret)
1879                                         goto unlock;
1880                         }
1881         }
1882
1883 unlock:
1884         mutex_unlock(&dev->struct_mutex);
1885
1886         return ret ?: cnt;
1887 }
1888
1889 static const struct file_operations i915_drop_caches_fops = {
1890         .owner = THIS_MODULE,
1891         .open = simple_open,
1892         .read = i915_drop_caches_read,
1893         .write = i915_drop_caches_write,
1894         .llseek = default_llseek,
1895 };
1896
1897 static ssize_t
1898 i915_max_freq_read(struct file *filp,
1899                    char __user *ubuf,
1900                    size_t max,
1901                    loff_t *ppos)
1902 {
1903         struct drm_device *dev = filp->private_data;
1904         drm_i915_private_t *dev_priv = dev->dev_private;
1905         char buf[80];
1906         int len, ret;
1907
1908         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1909                 return -ENODEV;
1910
1911         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1912         if (ret)
1913                 return ret;
1914
1915         len = snprintf(buf, sizeof(buf),
1916                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1917         mutex_unlock(&dev_priv->rps.hw_lock);
1918
1919         if (len > sizeof(buf))
1920                 len = sizeof(buf);
1921
1922         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1923 }
1924
1925 static ssize_t
1926 i915_max_freq_write(struct file *filp,
1927                   const char __user *ubuf,
1928                   size_t cnt,
1929                   loff_t *ppos)
1930 {
1931         struct drm_device *dev = filp->private_data;
1932         struct drm_i915_private *dev_priv = dev->dev_private;
1933         char buf[20];
1934         int val = 1, ret;
1935
1936         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1937                 return -ENODEV;
1938
1939         if (cnt > 0) {
1940                 if (cnt > sizeof(buf) - 1)
1941                         return -EINVAL;
1942
1943                 if (copy_from_user(buf, ubuf, cnt))
1944                         return -EFAULT;
1945                 buf[cnt] = 0;
1946
1947                 val = simple_strtoul(buf, NULL, 0);
1948         }
1949
1950         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1951
1952         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1953         if (ret)
1954                 return ret;
1955
1956         /*
1957          * Turbo will still be enabled, but won't go above the set value.
1958          */
1959         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1960
1961         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1962         mutex_unlock(&dev_priv->rps.hw_lock);
1963
1964         return cnt;
1965 }
1966
1967 static const struct file_operations i915_max_freq_fops = {
1968         .owner = THIS_MODULE,
1969         .open = simple_open,
1970         .read = i915_max_freq_read,
1971         .write = i915_max_freq_write,
1972         .llseek = default_llseek,
1973 };
1974
1975 static ssize_t
1976 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1977                    loff_t *ppos)
1978 {
1979         struct drm_device *dev = filp->private_data;
1980         drm_i915_private_t *dev_priv = dev->dev_private;
1981         char buf[80];
1982         int len, ret;
1983
1984         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1985                 return -ENODEV;
1986
1987         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1988         if (ret)
1989                 return ret;
1990
1991         len = snprintf(buf, sizeof(buf),
1992                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1993         mutex_unlock(&dev_priv->rps.hw_lock);
1994
1995         if (len > sizeof(buf))
1996                 len = sizeof(buf);
1997
1998         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1999 }
2000
2001 static ssize_t
2002 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
2003                     loff_t *ppos)
2004 {
2005         struct drm_device *dev = filp->private_data;
2006         struct drm_i915_private *dev_priv = dev->dev_private;
2007         char buf[20];
2008         int val = 1, ret;
2009
2010         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2011                 return -ENODEV;
2012
2013         if (cnt > 0) {
2014                 if (cnt > sizeof(buf) - 1)
2015                         return -EINVAL;
2016
2017                 if (copy_from_user(buf, ubuf, cnt))
2018                         return -EFAULT;
2019                 buf[cnt] = 0;
2020
2021                 val = simple_strtoul(buf, NULL, 0);
2022         }
2023
2024         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
2025
2026         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2027         if (ret)
2028                 return ret;
2029
2030         /*
2031          * Turbo will still be enabled, but won't go below the set value.
2032          */
2033         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
2034
2035         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
2036         mutex_unlock(&dev_priv->rps.hw_lock);
2037
2038         return cnt;
2039 }
2040
2041 static const struct file_operations i915_min_freq_fops = {
2042         .owner = THIS_MODULE,
2043         .open = simple_open,
2044         .read = i915_min_freq_read,
2045         .write = i915_min_freq_write,
2046         .llseek = default_llseek,
2047 };
2048
2049 static ssize_t
2050 i915_cache_sharing_read(struct file *filp,
2051                    char __user *ubuf,
2052                    size_t max,
2053                    loff_t *ppos)
2054 {
2055         struct drm_device *dev = filp->private_data;
2056         drm_i915_private_t *dev_priv = dev->dev_private;
2057         char buf[80];
2058         u32 snpcr;
2059         int len, ret;
2060
2061         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2062                 return -ENODEV;
2063
2064         ret = mutex_lock_interruptible(&dev->struct_mutex);
2065         if (ret)
2066                 return ret;
2067
2068         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2069         mutex_unlock(&dev_priv->dev->struct_mutex);
2070
2071         len = snprintf(buf, sizeof(buf),
2072                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
2073                        GEN6_MBC_SNPCR_SHIFT);
2074
2075         if (len > sizeof(buf))
2076                 len = sizeof(buf);
2077
2078         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
2079 }
2080
2081 static ssize_t
2082 i915_cache_sharing_write(struct file *filp,
2083                   const char __user *ubuf,
2084                   size_t cnt,
2085                   loff_t *ppos)
2086 {
2087         struct drm_device *dev = filp->private_data;
2088         struct drm_i915_private *dev_priv = dev->dev_private;
2089         char buf[20];
2090         u32 snpcr;
2091         int val = 1;
2092
2093         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2094                 return -ENODEV;
2095
2096         if (cnt > 0) {
2097                 if (cnt > sizeof(buf) - 1)
2098                         return -EINVAL;
2099
2100                 if (copy_from_user(buf, ubuf, cnt))
2101                         return -EFAULT;
2102                 buf[cnt] = 0;
2103
2104                 val = simple_strtoul(buf, NULL, 0);
2105         }
2106
2107         if (val < 0 || val > 3)
2108                 return -EINVAL;
2109
2110         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
2111
2112         /* Update the cache sharing policy here as well */
2113         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2114         snpcr &= ~GEN6_MBC_SNPCR_MASK;
2115         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
2116         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
2117
2118         return cnt;
2119 }
2120
2121 static const struct file_operations i915_cache_sharing_fops = {
2122         .owner = THIS_MODULE,
2123         .open = simple_open,
2124         .read = i915_cache_sharing_read,
2125         .write = i915_cache_sharing_write,
2126         .llseek = default_llseek,
2127 };
2128
2129 /* As the drm_debugfs_init() routines are called before dev->dev_private is
2130  * allocated we need to hook into the minor for release. */
2131 static int
2132 drm_add_fake_info_node(struct drm_minor *minor,
2133                        struct dentry *ent,
2134                        const void *key)
2135 {
2136         struct drm_info_node *node;
2137
2138         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
2139         if (node == NULL) {
2140                 debugfs_remove(ent);
2141                 return -ENOMEM;
2142         }
2143
2144         node->minor = minor;
2145         node->dent = ent;
2146         node->info_ent = (void *) key;
2147
2148         mutex_lock(&minor->debugfs_lock);
2149         list_add(&node->list, &minor->debugfs_list);
2150         mutex_unlock(&minor->debugfs_lock);
2151
2152         return 0;
2153 }
2154
2155 static int i915_forcewake_open(struct inode *inode, struct file *file)
2156 {
2157         struct drm_device *dev = inode->i_private;
2158         struct drm_i915_private *dev_priv = dev->dev_private;
2159
2160         if (INTEL_INFO(dev)->gen < 6)
2161                 return 0;
2162
2163         gen6_gt_force_wake_get(dev_priv);
2164
2165         return 0;
2166 }
2167
2168 static int i915_forcewake_release(struct inode *inode, struct file *file)
2169 {
2170         struct drm_device *dev = inode->i_private;
2171         struct drm_i915_private *dev_priv = dev->dev_private;
2172
2173         if (INTEL_INFO(dev)->gen < 6)
2174                 return 0;
2175
2176         gen6_gt_force_wake_put(dev_priv);
2177
2178         return 0;
2179 }
2180
2181 static const struct file_operations i915_forcewake_fops = {
2182         .owner = THIS_MODULE,
2183         .open = i915_forcewake_open,
2184         .release = i915_forcewake_release,
2185 };
2186
2187 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2188 {
2189         struct drm_device *dev = minor->dev;
2190         struct dentry *ent;
2191
2192         ent = debugfs_create_file("i915_forcewake_user",
2193                                   S_IRUSR,
2194                                   root, dev,
2195                                   &i915_forcewake_fops);
2196         if (IS_ERR(ent))
2197                 return PTR_ERR(ent);
2198
2199         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2200 }
2201
2202 static int i915_debugfs_create(struct dentry *root,
2203                                struct drm_minor *minor,
2204                                const char *name,
2205                                const struct file_operations *fops)
2206 {
2207         struct drm_device *dev = minor->dev;
2208         struct dentry *ent;
2209
2210         ent = debugfs_create_file(name,
2211                                   S_IRUGO | S_IWUSR,
2212                                   root, dev,
2213                                   fops);
2214         if (IS_ERR(ent))
2215                 return PTR_ERR(ent);
2216
2217         return drm_add_fake_info_node(minor, ent, fops);
2218 }
2219
2220 static struct drm_info_list i915_debugfs_list[] = {
2221         {"i915_capabilities", i915_capabilities, 0},
2222         {"i915_gem_objects", i915_gem_object_info, 0},
2223         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2224         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2225         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2226         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2227         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2228         {"i915_gem_request", i915_gem_request_info, 0},
2229         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2230         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2231         {"i915_gem_interrupt", i915_interrupt_info, 0},
2232         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2233         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2234         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2235         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2236         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2237         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2238         {"i915_inttoext_table", i915_inttoext_table, 0},
2239         {"i915_drpc_info", i915_drpc_info, 0},
2240         {"i915_emon_status", i915_emon_status, 0},
2241         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2242         {"i915_gfxec", i915_gfxec, 0},
2243         {"i915_fbc_status", i915_fbc_status, 0},
2244         {"i915_sr_status", i915_sr_status, 0},
2245         {"i915_opregion", i915_opregion, 0},
2246         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2247         {"i915_context_status", i915_context_status, 0},
2248         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2249         {"i915_swizzle_info", i915_swizzle_info, 0},
2250         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2251         {"i915_dpio", i915_dpio_info, 0},
2252 };
2253 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2254
2255 int i915_debugfs_init(struct drm_minor *minor)
2256 {
2257         int ret;
2258
2259         ret = i915_debugfs_create(minor->debugfs_root, minor,
2260                                   "i915_wedged",
2261                                   &i915_wedged_fops);
2262         if (ret)
2263                 return ret;
2264
2265         ret = i915_forcewake_create(minor->debugfs_root, minor);
2266         if (ret)
2267                 return ret;
2268
2269         ret = i915_debugfs_create(minor->debugfs_root, minor,
2270                                   "i915_max_freq",
2271                                   &i915_max_freq_fops);
2272         if (ret)
2273                 return ret;
2274
2275         ret = i915_debugfs_create(minor->debugfs_root, minor,
2276                                   "i915_min_freq",
2277                                   &i915_min_freq_fops);
2278         if (ret)
2279                 return ret;
2280
2281         ret = i915_debugfs_create(minor->debugfs_root, minor,
2282                                   "i915_cache_sharing",
2283                                   &i915_cache_sharing_fops);
2284         if (ret)
2285                 return ret;
2286
2287         ret = i915_debugfs_create(minor->debugfs_root, minor,
2288                                   "i915_ring_stop",
2289                                   &i915_ring_stop_fops);
2290         if (ret)
2291                 return ret;
2292
2293         ret = i915_debugfs_create(minor->debugfs_root, minor,
2294                                   "i915_gem_drop_caches",
2295                                   &i915_drop_caches_fops);
2296         if (ret)
2297                 return ret;
2298
2299         ret = i915_debugfs_create(minor->debugfs_root, minor,
2300                                   "i915_error_state",
2301                                   &i915_error_state_fops);
2302         if (ret)
2303                 return ret;
2304
2305         ret = i915_debugfs_create(minor->debugfs_root, minor,
2306                                  "i915_next_seqno",
2307                                  &i915_next_seqno_fops);
2308         if (ret)
2309                 return ret;
2310
2311         return drm_debugfs_create_files(i915_debugfs_list,
2312                                         I915_DEBUGFS_ENTRIES,
2313                                         minor->debugfs_root, minor);
2314 }
2315
2316 void i915_debugfs_cleanup(struct drm_minor *minor)
2317 {
2318         drm_debugfs_remove_files(i915_debugfs_list,
2319                                  I915_DEBUGFS_ENTRIES, minor);
2320         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2321                                  1, minor);
2322         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2323                                  1, minor);
2324         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2325                                  1, minor);
2326         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2327                                  1, minor);
2328         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2329                                  1, minor);
2330         drm_debugfs_remove_files((struct drm_info_list *) &i915_drop_caches_fops,
2331                                  1, minor);
2332         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2333                                  1, minor);
2334         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2335                                  1, minor);
2336         drm_debugfs_remove_files((struct drm_info_list *) &i915_next_seqno_fops,
2337                                  1, minor);
2338 }
2339
2340 #endif /* CONFIG_DEBUG_FS */