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 <[email protected]>
  25  *    Keith Packard <[email protected]>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include <linux/export.h>
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         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, "%p: %s%s %8zdKiB %04x %04x %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->pin_mappable || obj->fault_mappable) {
 129                 char s[3], *t = s;
 130                 if (obj->pin_mappable)
 131                         *t++ = 'p';
 132                 if (obj->fault_mappable)
 133                         *t++ = 'f';
 134                 *t = '\0';
 135                 seq_printf(m, " (%s mappable)", s);
 136         }
 137         if (obj->ring != NULL)
 138                 seq_printf(m, " (%s)", obj->ring->name);
 139 }
 140
 141 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 142 {
 143         struct drm_info_node *node = (struct drm_info_node *) m->private;
 144         uintptr_t list = (uintptr_t) node->info_ent->data;
 145         struct list_head *head;
 146         struct drm_device *dev = node->minor->dev;
 147         drm_i915_private_t *dev_priv = dev->dev_private;
 148         struct drm_i915_gem_object *obj;
 149         size_t total_obj_size, total_gtt_size;
 150         int count, ret;
 151
 152         ret = mutex_lock_interruptible(&dev->struct_mutex);
 153         if (ret)
 154                 return ret;
 155
 156         switch (list) {
 157         case ACTIVE_LIST:
 158                 seq_printf(m, "Active:\n");
 159                 head = &dev_priv->mm.active_list;
 160                 break;
 161         case INACTIVE_LIST:
 162                 seq_printf(m, "Inactive:\n");
 163                 head = &dev_priv->mm.inactive_list;
 164                 break;
 165         default:
 166                 mutex_unlock(&dev->struct_mutex);
 167                 return -EINVAL;
 168         }
 169
 170         total_obj_size = total_gtt_size = count = 0;
 171         list_for_each_entry(obj, head, mm_list) {
 172                 seq_printf(m, "   ");
 173                 describe_obj(m, obj);
 174                 seq_printf(m, "\n");
 175                 total_obj_size += obj->base.size;
 176                 total_gtt_size += obj->gtt_space->size;
 177                 count++;
 178         }
 179         mutex_unlock(&dev->struct_mutex);
 180
 181         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 182                    count, total_obj_size, total_gtt_size);
 183         return 0;
 184 }
 185
 186 #define count_objects(list, member) do { \
 187         list_for_each_entry(obj, list, member) { \
 188                 size += obj->gtt_space->size; \
 189                 ++count; \
 190                 if (obj->map_and_fenceable) { \
 191                         mappable_size += obj->gtt_space->size; \
 192                         ++mappable_count; \
 193                 } \
 194         } \
 195 } while (0)
 196
 197 static int i915_gem_object_info(struct seq_file *m, void* data)
 198 {
 199         struct drm_info_node *node = (struct drm_info_node *) m->private;
 200         struct drm_device *dev = node->minor->dev;
 201         struct drm_i915_private *dev_priv = dev->dev_private;
 202         u32 count, mappable_count, purgeable_count;
 203         size_t size, mappable_size, purgeable_size;
 204         struct drm_i915_gem_object *obj;
 205         int ret;
 206
 207         ret = mutex_lock_interruptible(&dev->struct_mutex);
 208         if (ret)
 209                 return ret;
 210
 211         seq_printf(m, "%u objects, %zu bytes\n",
 212                    dev_priv->mm.object_count,
 213                    dev_priv->mm.object_memory);
 214
 215         size = count = mappable_size = mappable_count = 0;
 216         count_objects(&dev_priv->mm.bound_list, gtt_list);
 217         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 218                    count, mappable_count, size, mappable_size);
 219
 220         size = count = mappable_size = mappable_count = 0;
 221         count_objects(&dev_priv->mm.active_list, mm_list);
 222         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 223                    count, mappable_count, size, mappable_size);
 224
 225         size = count = mappable_size = mappable_count = 0;
 226         count_objects(&dev_priv->mm.inactive_list, mm_list);
 227         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 228                    count, mappable_count, size, mappable_size);
 229
 230         size = count = purgeable_size = purgeable_count = 0;
 231         list_for_each_entry(obj, &dev_priv->mm.unbound_list, gtt_list) {
 232                 size += obj->base.size, ++count;
 233                 if (obj->madv == I915_MADV_DONTNEED)
 234                         purgeable_size += obj->base.size, ++purgeable_count;
 235         }
 236         seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
 237
 238         size = count = mappable_size = mappable_count = 0;
 239         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 240                 if (obj->fault_mappable) {
 241                         size += obj->gtt_space->size;
 242                         ++count;
 243                 }
 244                 if (obj->pin_mappable) {
 245                         mappable_size += obj->gtt_space->size;
 246                         ++mappable_count;
 247                 }
 248                 if (obj->madv == I915_MADV_DONTNEED) {
 249                         purgeable_size += obj->base.size;
 250                         ++purgeable_count;
 251                 }
 252         }
 253         seq_printf(m, "%u purgeable objects, %zu bytes\n",
 254                    purgeable_count, purgeable_size);
 255         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 256                    mappable_count, mappable_size);
 257         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 258                    count, size);
 259
 260         seq_printf(m, "%zu [%zu] gtt total\n",
 261                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 262
 263         mutex_unlock(&dev->struct_mutex);
 264
 265         return 0;
 266 }
 267
 268 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 269 {
 270         struct drm_info_node *node = (struct drm_info_node *) m->private;
 271         struct drm_device *dev = node->minor->dev;
 272         uintptr_t list = (uintptr_t) node->info_ent->data;
 273         struct drm_i915_private *dev_priv = dev->dev_private;
 274         struct drm_i915_gem_object *obj;
 275         size_t total_obj_size, total_gtt_size;
 276         int count, ret;
 277
 278         ret = mutex_lock_interruptible(&dev->struct_mutex);
 279         if (ret)
 280                 return ret;
 281
 282         total_obj_size = total_gtt_size = count = 0;
 283         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 284                 if (list == PINNED_LIST && obj->pin_count == 0)
 285                         continue;
 286
 287                 seq_printf(m, "   ");
 288                 describe_obj(m, obj);
 289                 seq_printf(m, "\n");
 290                 total_obj_size += obj->base.size;
 291                 total_gtt_size += obj->gtt_space->size;
 292                 count++;
 293         }
 294
 295         mutex_unlock(&dev->struct_mutex);
 296
 297         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 298                    count, total_obj_size, total_gtt_size);
 299
 300         return 0;
 301 }
 302
 303 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 304 {
 305         struct drm_info_node *node = (struct drm_info_node *) m->private;
 306         struct drm_device *dev = node->minor->dev;
 307         unsigned long flags;
 308         struct intel_crtc *crtc;
 309
 310         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 311                 const char pipe = pipe_name(crtc->pipe);
 312                 const char plane = plane_name(crtc->plane);
 313                 struct intel_unpin_work *work;
 314
 315                 spin_lock_irqsave(&dev->event_lock, flags);
 316                 work = crtc->unpin_work;
 317                 if (work == NULL) {
 318                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 319                                    pipe, plane);
 320                 } else {
 321                         if (!work->pending) {
 322                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 323                                            pipe, plane);
 324                         } else {
 325                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 326                                            pipe, plane);
 327                         }
 328                         if (work->enable_stall_check)
 329                                 seq_printf(m, "Stall check enabled, ");
 330                         else
 331                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 332                         seq_printf(m, "%d prepares\n", work->pending);
 333
 334                         if (work->old_fb_obj) {
 335                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 336                                 if (obj)
 337                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 338                         }
 339                         if (work->pending_flip_obj) {
 340                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 341                                 if (obj)
 342                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 343                         }
 344                 }
 345                 spin_unlock_irqrestore(&dev->event_lock, flags);
 346         }
 347
 348         return 0;
 349 }
 350
 351 static int i915_gem_request_info(struct seq_file *m, void *data)
 352 {
 353         struct drm_info_node *node = (struct drm_info_node *) m->private;
 354         struct drm_device *dev = node->minor->dev;
 355         drm_i915_private_t *dev_priv = dev->dev_private;
 356         struct intel_ring_buffer *ring;
 357         struct drm_i915_gem_request *gem_request;
 358         int ret, count, i;
 359
 360         ret = mutex_lock_interruptible(&dev->struct_mutex);
 361         if (ret)
 362                 return ret;
 363
 364         count = 0;
 365         for_each_ring(ring, dev_priv, i) {
 366                 if (list_empty(&ring->request_list))
 367                         continue;
 368
 369                 seq_printf(m, "%s requests:\n", ring->name);
 370                 list_for_each_entry(gem_request,
 371                                     &ring->request_list,
 372                                     list) {
 373                         seq_printf(m, "    %d @ %d\n",
 374                                    gem_request->seqno,
 375                                    (int) (jiffies - gem_request->emitted_jiffies));
 376                 }
 377                 count++;
 378         }
 379         mutex_unlock(&dev->struct_mutex);
 380
 381         if (count == 0)
 382                 seq_printf(m, "No requests\n");
 383
 384         return 0;
 385 }
 386
 387 static void i915_ring_seqno_info(struct seq_file *m,
 388                                  struct intel_ring_buffer *ring)
 389 {
 390         if (ring->get_seqno) {
 391                 seq_printf(m, "Current sequence (%s): %d\n",
 392                            ring->name, ring->get_seqno(ring, false));
 393         }
 394 }
 395
 396 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 397 {
 398         struct drm_info_node *node = (struct drm_info_node *) m->private;
 399         struct drm_device *dev = node->minor->dev;
 400         drm_i915_private_t *dev_priv = dev->dev_private;
 401         struct intel_ring_buffer *ring;
 402         int ret, i;
 403
 404         ret = mutex_lock_interruptible(&dev->struct_mutex);
 405         if (ret)
 406                 return ret;
 407
 408         for_each_ring(ring, dev_priv, i)
 409                 i915_ring_seqno_info(m, ring);
 410
 411         mutex_unlock(&dev->struct_mutex);
 412
 413         return 0;
 414 }
 415
 416
 417 static int i915_interrupt_info(struct seq_file *m, void *data)
 418 {
 419         struct drm_info_node *node = (struct drm_info_node *) m->private;
 420         struct drm_device *dev = node->minor->dev;
 421         drm_i915_private_t *dev_priv = dev->dev_private;
 422         struct intel_ring_buffer *ring;
 423         int ret, i, pipe;
 424
 425         ret = mutex_lock_interruptible(&dev->struct_mutex);
 426         if (ret)
 427                 return ret;
 428
 429         if (IS_VALLEYVIEW(dev)) {
 430                 seq_printf(m, "Display IER:\t%08x\n",
 431                            I915_READ(VLV_IER));
 432                 seq_printf(m, "Display IIR:\t%08x\n",
 433                            I915_READ(VLV_IIR));
 434                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 435                            I915_READ(VLV_IIR_RW));
 436                 seq_printf(m, "Display IMR:\t%08x\n",
 437                            I915_READ(VLV_IMR));
 438                 for_each_pipe(pipe)
 439                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 440                                    pipe_name(pipe),
 441                                    I915_READ(PIPESTAT(pipe)));
 442
 443                 seq_printf(m, "Master IER:\t%08x\n",
 444                            I915_READ(VLV_MASTER_IER));
 445
 446                 seq_printf(m, "Render IER:\t%08x\n",
 447                            I915_READ(GTIER));
 448                 seq_printf(m, "Render IIR:\t%08x\n",
 449                            I915_READ(GTIIR));
 450                 seq_printf(m, "Render IMR:\t%08x\n",
 451                            I915_READ(GTIMR));
 452
 453                 seq_printf(m, "PM IER:\t\t%08x\n",
 454                            I915_READ(GEN6_PMIER));
 455                 seq_printf(m, "PM IIR:\t\t%08x\n",
 456                            I915_READ(GEN6_PMIIR));
 457                 seq_printf(m, "PM IMR:\t\t%08x\n",
 458                            I915_READ(GEN6_PMIMR));
 459
 460                 seq_printf(m, "Port hotplug:\t%08x\n",
 461                            I915_READ(PORT_HOTPLUG_EN));
 462                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 463                            I915_READ(VLV_DPFLIPSTAT));
 464                 seq_printf(m, "DPINVGTT:\t%08x\n",
 465                            I915_READ(DPINVGTT));
 466
 467         } else if (!HAS_PCH_SPLIT(dev)) {
 468                 seq_printf(m, "Interrupt enable:    %08x\n",
 469                            I915_READ(IER));
 470                 seq_printf(m, "Interrupt identity:  %08x\n",
 471                            I915_READ(IIR));
 472                 seq_printf(m, "Interrupt mask:      %08x\n",
 473                            I915_READ(IMR));
 474                 for_each_pipe(pipe)
 475                         seq_printf(m, "Pipe %c stat:         %08x\n",
 476                                    pipe_name(pipe),
 477                                    I915_READ(PIPESTAT(pipe)));
 478         } else {
 479                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 480                            I915_READ(DEIER));
 481                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 482                            I915_READ(DEIIR));
 483                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 484                            I915_READ(DEIMR));
 485                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 486                            I915_READ(SDEIER));
 487                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 488                            I915_READ(SDEIIR));
 489                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 490                            I915_READ(SDEIMR));
 491                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 492                            I915_READ(GTIER));
 493                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 494                            I915_READ(GTIIR));
 495                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 496                            I915_READ(GTIMR));
 497         }
 498         seq_printf(m, "Interrupts received: %d\n",
 499                    atomic_read(&dev_priv->irq_received));
 500         for_each_ring(ring, dev_priv, i) {
 501                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 502                         seq_printf(m,
 503                                    "Graphics Interrupt mask (%s):       %08x\n",
 504                                    ring->name, I915_READ_IMR(ring));
 505                 }
 506                 i915_ring_seqno_info(m, ring);
 507         }
 508         mutex_unlock(&dev->struct_mutex);
 509
 510         return 0;
 511 }
 512
 513 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 514 {
 515         struct drm_info_node *node = (struct drm_info_node *) m->private;
 516         struct drm_device *dev = node->minor->dev;
 517         drm_i915_private_t *dev_priv = dev->dev_private;
 518         int i, ret;
 519
 520         ret = mutex_lock_interruptible(&dev->struct_mutex);
 521         if (ret)
 522                 return ret;
 523
 524         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 525         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 526         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 527                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 528
 529                 seq_printf(m, "Fence %d, pin count = %d, object = ",
 530                            i, dev_priv->fence_regs[i].pin_count);
 531                 if (obj == NULL)
 532                         seq_printf(m, "unused");
 533                 else
 534                         describe_obj(m, obj);
 535                 seq_printf(m, "\n");
 536         }
 537
 538         mutex_unlock(&dev->struct_mutex);
 539         return 0;
 540 }
 541
 542 static int i915_hws_info(struct seq_file *m, void *data)
 543 {
 544         struct drm_info_node *node = (struct drm_info_node *) m->private;
 545         struct drm_device *dev = node->minor->dev;
 546         drm_i915_private_t *dev_priv = dev->dev_private;
 547         struct intel_ring_buffer *ring;
 548         const volatile u32 __iomem *hws;
 549         int i;
 550
 551         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 552         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 553         if (hws == NULL)
 554                 return 0;
 555
 556         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 557                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 558                            i * 4,
 559                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 560         }
 561         return 0;
 562 }
 563
 564 static const char *ring_str(int ring)
 565 {
 566         switch (ring) {
 567         case RCS: return "render";
 568         case VCS: return "bsd";
 569         case BCS: return "blt";
 570         default: return "";
 571         }
 572 }
 573
 574 static const char *pin_flag(int pinned)
 575 {
 576         if (pinned > 0)
 577                 return " P";
 578         else if (pinned < 0)
 579                 return " p";
 580         else
 581                 return "";
 582 }
 583
 584 static const char *tiling_flag(int tiling)
 585 {
 586         switch (tiling) {
 587         default:
 588         case I915_TILING_NONE: return "";
 589         case I915_TILING_X: return " X";
 590         case I915_TILING_Y: return " Y";
 591         }
 592 }
 593
 594 static const char *dirty_flag(int dirty)
 595 {
 596         return dirty ? " dirty" : "";
 597 }
 598
 599 static const char *purgeable_flag(int purgeable)
 600 {
 601         return purgeable ? " purgeable" : "";
 602 }
 603
 604 static void print_error_buffers(struct seq_file *m,
 605                                 const char *name,
 606                                 struct drm_i915_error_buffer *err,
 607                                 int count)
 608 {
 609         seq_printf(m, "%s [%d]:\n", name, count);
 610
 611         while (count--) {
 612                 seq_printf(m, "  %08x %8u %04x %04x %x %x%s%s%s%s%s%s%s",
 613                            err->gtt_offset,
 614                            err->size,
 615                            err->read_domains,
 616                            err->write_domain,
 617                            err->rseqno, err->wseqno,
 618                            pin_flag(err->pinned),
 619                            tiling_flag(err->tiling),
 620                            dirty_flag(err->dirty),
 621                            purgeable_flag(err->purgeable),
 622                            err->ring != -1 ? " " : "",
 623                            ring_str(err->ring),
 624                            cache_level_str(err->cache_level));
 625
 626                 if (err->name)
 627                         seq_printf(m, " (name: %d)", err->name);
 628                 if (err->fence_reg != I915_FENCE_REG_NONE)
 629                         seq_printf(m, " (fence: %d)", err->fence_reg);
 630
 631                 seq_printf(m, "\n");
 632                 err++;
 633         }
 634 }
 635
 636 static void i915_ring_error_state(struct seq_file *m,
 637                                   struct drm_device *dev,
 638                                   struct drm_i915_error_state *error,
 639                                   unsigned ring)
 640 {
 641         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
 642         seq_printf(m, "%s command stream:\n", ring_str(ring));
 643         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 644         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 645         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 646         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 647         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 648         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 649         if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
 650                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 651
 652         if (INTEL_INFO(dev)->gen >= 4)
 653                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 654         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 655         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 656         if (INTEL_INFO(dev)->gen >= 6) {
 657                 seq_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
 658                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 659                 seq_printf(m, "  SYNC_0: 0x%08x\n",
 660                            error->semaphore_mboxes[ring][0]);
 661                 seq_printf(m, "  SYNC_1: 0x%08x\n",
 662                            error->semaphore_mboxes[ring][1]);
 663         }
 664         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 665         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
 666         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 667         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 668 }
 669
 670 struct i915_error_state_file_priv {
 671         struct drm_device *dev;
 672         struct drm_i915_error_state *error;
 673 };
 674
 675 static int i915_error_state(struct seq_file *m, void *unused)
 676 {
 677         struct i915_error_state_file_priv *error_priv = m->private;
 678         struct drm_device *dev = error_priv->dev;
 679         drm_i915_private_t *dev_priv = dev->dev_private;
 680         struct drm_i915_error_state *error = error_priv->error;
 681         struct intel_ring_buffer *ring;
 682         int i, j, page, offset, elt;
 683
 684         if (!error) {
 685                 seq_printf(m, "no error state collected\n");
 686                 return 0;
 687         }
 688
 689         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 690                    error->time.tv_usec);
 691         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 692         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 693         seq_printf(m, "IER: 0x%08x\n", error->ier);
 694         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 695         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
 696
 697         for (i = 0; i < dev_priv->num_fence_regs; i++)
 698                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 699
 700         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
 701                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
 702
 703         if (INTEL_INFO(dev)->gen >= 6) {
 704                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 705                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 706         }
 707
 708         if (INTEL_INFO(dev)->gen == 7)
 709                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 710
 711         for_each_ring(ring, dev_priv, i)
 712                 i915_ring_error_state(m, dev, error, i);
 713
 714         if (error->active_bo)
 715                 print_error_buffers(m, "Active",
 716                                     error->active_bo,
 717                                     error->active_bo_count);
 718
 719         if (error->pinned_bo)
 720                 print_error_buffers(m, "Pinned",
 721                                     error->pinned_bo,
 722                                     error->pinned_bo_count);
 723
 724         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 725                 struct drm_i915_error_object *obj;
 726
 727                 if ((obj = error->ring[i].batchbuffer)) {
 728                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 729                                    dev_priv->ring[i].name,
 730                                    obj->gtt_offset);
 731                         offset = 0;
 732                         for (page = 0; page < obj->page_count; page++) {
 733                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 734                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 735                                         offset += 4;
 736                                 }
 737                         }
 738                 }
 739
 740                 if (error->ring[i].num_requests) {
 741                         seq_printf(m, "%s --- %d requests\n",
 742                                    dev_priv->ring[i].name,
 743                                    error->ring[i].num_requests);
 744                         for (j = 0; j < error->ring[i].num_requests; j++) {
 745                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 746                                            error->ring[i].requests[j].seqno,
 747                                            error->ring[i].requests[j].jiffies,
 748                                            error->ring[i].requests[j].tail);
 749                         }
 750                 }
 751
 752                 if ((obj = error->ring[i].ringbuffer)) {
 753                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 754                                    dev_priv->ring[i].name,
 755                                    obj->gtt_offset);
 756                         offset = 0;
 757                         for (page = 0; page < obj->page_count; page++) {
 758                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 759                                         seq_printf(m, "%08x :  %08x\n",
 760                                                    offset,
 761                                                    obj->pages[page][elt]);
 762                                         offset += 4;
 763                                 }
 764                         }
 765                 }
 766         }
 767
 768         if (error->overlay)
 769                 intel_overlay_print_error_state(m, error->overlay);
 770
 771         if (error->display)
 772                 intel_display_print_error_state(m, dev, error->display);
 773
 774         return 0;
 775 }
 776
 777 static ssize_t
 778 i915_error_state_write(struct file *filp,
 779                        const char __user *ubuf,
 780                        size_t cnt,
 781                        loff_t *ppos)
 782 {
 783         struct seq_file *m = filp->private_data;
 784         struct i915_error_state_file_priv *error_priv = m->private;
 785         struct drm_device *dev = error_priv->dev;
 786         int ret;
 787
 788         DRM_DEBUG_DRIVER("Resetting error state\n");
 789
 790         ret = mutex_lock_interruptible(&dev->struct_mutex);
 791         if (ret)
 792                 return ret;
 793
 794         i915_destroy_error_state(dev);
 795         mutex_unlock(&dev->struct_mutex);
 796
 797         return cnt;
 798 }
 799
 800 static int i915_error_state_open(struct inode *inode, struct file *file)
 801 {
 802         struct drm_device *dev = inode->i_private;
 803         drm_i915_private_t *dev_priv = dev->dev_private;
 804         struct i915_error_state_file_priv *error_priv;
 805         unsigned long flags;
 806
 807         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 808         if (!error_priv)
 809                 return -ENOMEM;
 810
 811         error_priv->dev = dev;
 812
 813         spin_lock_irqsave(&dev_priv->error_lock, flags);
 814         error_priv->error = dev_priv->first_error;
 815         if (error_priv->error)
 816                 kref_get(&error_priv->error->ref);
 817         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 818
 819         return single_open(file, i915_error_state, error_priv);
 820 }
 821
 822 static int i915_error_state_release(struct inode *inode, struct file *file)
 823 {
 824         struct seq_file *m = file->private_data;
 825         struct i915_error_state_file_priv *error_priv = m->private;
 826
 827         if (error_priv->error)
 828                 kref_put(&error_priv->error->ref, i915_error_state_free);
 829         kfree(error_priv);
 830
 831         return single_release(inode, file);
 832 }
 833
 834 static const struct file_operations i915_error_state_fops = {
 835         .owner = THIS_MODULE,
 836         .open = i915_error_state_open,
 837         .read = seq_read,
 838         .write = i915_error_state_write,
 839         .llseek = default_llseek,
 840         .release = i915_error_state_release,
 841 };
 842
 843 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 844 {
 845         struct drm_info_node *node = (struct drm_info_node *) m->private;
 846         struct drm_device *dev = node->minor->dev;
 847         drm_i915_private_t *dev_priv = dev->dev_private;
 848         u16 crstanddelay;
 849         int ret;
 850
 851         ret = mutex_lock_interruptible(&dev->struct_mutex);
 852         if (ret)
 853                 return ret;
 854
 855         crstanddelay = I915_READ16(CRSTANDVID);
 856
 857         mutex_unlock(&dev->struct_mutex);
 858
 859         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 860
 861         return 0;
 862 }
 863
 864 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 865 {
 866         struct drm_info_node *node = (struct drm_info_node *) m->private;
 867         struct drm_device *dev = node->minor->dev;
 868         drm_i915_private_t *dev_priv = dev->dev_private;
 869         int ret;
 870
 871         if (IS_GEN5(dev)) {
 872                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 873                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 874
 875                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 876                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 877                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 878                            MEMSTAT_VID_SHIFT);
 879                 seq_printf(m, "Current P-state: %d\n",
 880                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 881         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 882                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 883                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 884                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 885                 u32 rpstat;
 886                 u32 rpupei, rpcurup, rpprevup;
 887                 u32 rpdownei, rpcurdown, rpprevdown;
 888                 int max_freq;
 889
 890                 /* RPSTAT1 is in the GT power well */
 891                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 892                 if (ret)
 893                         return ret;
 894
 895                 gen6_gt_force_wake_get(dev_priv);
 896
 897                 rpstat = I915_READ(GEN6_RPSTAT1);
 898                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 899                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 900                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 901                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 902                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 903                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 904
 905                 gen6_gt_force_wake_put(dev_priv);
 906                 mutex_unlock(&dev->struct_mutex);
 907
 908                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 909                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 910                 seq_printf(m, "Render p-state ratio: %d\n",
 911                            (gt_perf_status & 0xff00) >> 8);
 912                 seq_printf(m, "Render p-state VID: %d\n",
 913                            gt_perf_status & 0xff);
 914                 seq_printf(m, "Render p-state limit: %d\n",
 915                            rp_state_limits & 0xff);
 916                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 917                                                 GEN6_CAGF_SHIFT) * GT_FREQUENCY_MULTIPLIER);
 918                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 919                            GEN6_CURICONT_MASK);
 920                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 921                            GEN6_CURBSYTAVG_MASK);
 922                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 923                            GEN6_CURBSYTAVG_MASK);
 924                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 925                            GEN6_CURIAVG_MASK);
 926                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 927                            GEN6_CURBSYTAVG_MASK);
 928                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 929                            GEN6_CURBSYTAVG_MASK);
 930
 931                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 932                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 933                            max_freq * GT_FREQUENCY_MULTIPLIER);
 934
 935                 max_freq = (rp_state_cap & 0xff00) >> 8;
 936                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 937                            max_freq * GT_FREQUENCY_MULTIPLIER);
 938
 939                 max_freq = rp_state_cap & 0xff;
 940                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 941                            max_freq * GT_FREQUENCY_MULTIPLIER);
 942         } else {
 943                 seq_printf(m, "no P-state info available\n");
 944         }
 945
 946         return 0;
 947 }
 948
 949 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 950 {
 951         struct drm_info_node *node = (struct drm_info_node *) m->private;
 952         struct drm_device *dev = node->minor->dev;
 953         drm_i915_private_t *dev_priv = dev->dev_private;
 954         u32 delayfreq;
 955         int ret, i;
 956
 957         ret = mutex_lock_interruptible(&dev->struct_mutex);
 958         if (ret)
 959                 return ret;
 960
 961         for (i = 0; i < 16; i++) {
 962                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 963                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 964                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 965         }
 966
 967         mutex_unlock(&dev->struct_mutex);
 968
 969         return 0;
 970 }
 971
 972 static inline int MAP_TO_MV(int map)
 973 {
 974         return 1250 - (map * 25);
 975 }
 976
 977 static int i915_inttoext_table(struct seq_file *m, void *unused)
 978 {
 979         struct drm_info_node *node = (struct drm_info_node *) m->private;
 980         struct drm_device *dev = node->minor->dev;
 981         drm_i915_private_t *dev_priv = dev->dev_private;
 982         u32 inttoext;
 983         int ret, i;
 984
 985         ret = mutex_lock_interruptible(&dev->struct_mutex);
 986         if (ret)
 987                 return ret;
 988
 989         for (i = 1; i <= 32; i++) {
 990                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 991                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 992         }
 993
 994         mutex_unlock(&dev->struct_mutex);
 995
 996         return 0;
 997 }
 998
 999 static int ironlake_drpc_info(struct seq_file *m)
1000 {
1001         struct drm_info_node *node = (struct drm_info_node *) m->private;
1002         struct drm_device *dev = node->minor->dev;
1003         drm_i915_private_t *dev_priv = dev->dev_private;
1004         u32 rgvmodectl, rstdbyctl;
1005         u16 crstandvid;
1006         int ret;
1007
1008         ret = mutex_lock_interruptible(&dev->struct_mutex);
1009         if (ret)
1010                 return ret;
1011
1012         rgvmodectl = I915_READ(MEMMODECTL);
1013         rstdbyctl = I915_READ(RSTDBYCTL);
1014         crstandvid = I915_READ16(CRSTANDVID);
1015
1016         mutex_unlock(&dev->struct_mutex);
1017
1018         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1019                    "yes" : "no");
1020         seq_printf(m, "Boost freq: %d\n",
1021                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1022                    MEMMODE_BOOST_FREQ_SHIFT);
1023         seq_printf(m, "HW control enabled: %s\n",
1024                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1025         seq_printf(m, "SW control enabled: %s\n",
1026                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1027         seq_printf(m, "Gated voltage change: %s\n",
1028                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1029         seq_printf(m, "Starting frequency: P%d\n",
1030                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1031         seq_printf(m, "Max P-state: P%d\n",
1032                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1033         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1034         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1035         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1036         seq_printf(m, "Render standby enabled: %s\n",
1037                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1038         seq_printf(m, "Current RS state: ");
1039         switch (rstdbyctl & RSX_STATUS_MASK) {
1040         case RSX_STATUS_ON:
1041                 seq_printf(m, "on\n");
1042                 break;
1043         case RSX_STATUS_RC1:
1044                 seq_printf(m, "RC1\n");
1045                 break;
1046         case RSX_STATUS_RC1E:
1047                 seq_printf(m, "RC1E\n");
1048                 break;
1049         case RSX_STATUS_RS1:
1050                 seq_printf(m, "RS1\n");
1051                 break;
1052         case RSX_STATUS_RS2:
1053                 seq_printf(m, "RS2 (RC6)\n");
1054                 break;
1055         case RSX_STATUS_RS3:
1056                 seq_printf(m, "RC3 (RC6+)\n");
1057                 break;
1058         default:
1059                 seq_printf(m, "unknown\n");
1060                 break;
1061         }
1062
1063         return 0;
1064 }
1065
1066 static int gen6_drpc_info(struct seq_file *m)
1067 {
1068
1069         struct drm_info_node *node = (struct drm_info_node *) m->private;
1070         struct drm_device *dev = node->minor->dev;
1071         struct drm_i915_private *dev_priv = dev->dev_private;
1072         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1073         unsigned forcewake_count;
1074         int count=0, ret;
1075
1076
1077         ret = mutex_lock_interruptible(&dev->struct_mutex);
1078         if (ret)
1079                 return ret;
1080
1081         spin_lock_irq(&dev_priv->gt_lock);
1082         forcewake_count = dev_priv->forcewake_count;
1083         spin_unlock_irq(&dev_priv->gt_lock);
1084
1085         if (forcewake_count) {
1086                 seq_printf(m, "RC information inaccurate because somebody "
1087                               "holds a forcewake reference \n");
1088         } else {
1089                 /* NB: we cannot use forcewake, else we read the wrong values */
1090                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1091                         udelay(10);
1092                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1093         }
1094
1095         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1096         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1097
1098         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1099         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1100         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1101         mutex_unlock(&dev->struct_mutex);
1102
1103         seq_printf(m, "Video Turbo Mode: %s\n",
1104                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1105         seq_printf(m, "HW control enabled: %s\n",
1106                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1107         seq_printf(m, "SW control enabled: %s\n",
1108                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1109                           GEN6_RP_MEDIA_SW_MODE));
1110         seq_printf(m, "RC1e Enabled: %s\n",
1111                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1112         seq_printf(m, "RC6 Enabled: %s\n",
1113                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1114         seq_printf(m, "Deep RC6 Enabled: %s\n",
1115                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1116         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1117                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1118         seq_printf(m, "Current RC state: ");
1119         switch (gt_core_status & GEN6_RCn_MASK) {
1120         case GEN6_RC0:
1121                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1122                         seq_printf(m, "Core Power Down\n");
1123                 else
1124                         seq_printf(m, "on\n");
1125                 break;
1126         case GEN6_RC3:
1127                 seq_printf(m, "RC3\n");
1128                 break;
1129         case GEN6_RC6:
1130                 seq_printf(m, "RC6\n");
1131                 break;
1132         case GEN6_RC7:
1133                 seq_printf(m, "RC7\n");
1134                 break;
1135         default:
1136                 seq_printf(m, "Unknown\n");
1137                 break;
1138         }
1139
1140         seq_printf(m, "Core Power Down: %s\n",
1141                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1142
1143         /* Not exactly sure what this is */
1144         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1145                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1146         seq_printf(m, "RC6 residency since boot: %u\n",
1147                    I915_READ(GEN6_GT_GFX_RC6));
1148         seq_printf(m, "RC6+ residency since boot: %u\n",
1149                    I915_READ(GEN6_GT_GFX_RC6p));
1150         seq_printf(m, "RC6++ residency since boot: %u\n",
1151                    I915_READ(GEN6_GT_GFX_RC6pp));
1152
1153         seq_printf(m, "RC6   voltage: %dmV\n",
1154                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1155         seq_printf(m, "RC6+  voltage: %dmV\n",
1156                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1157         seq_printf(m, "RC6++ voltage: %dmV\n",
1158                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1159         return 0;
1160 }
1161
1162 static int i915_drpc_info(struct seq_file *m, void *unused)
1163 {
1164         struct drm_info_node *node = (struct drm_info_node *) m->private;
1165         struct drm_device *dev = node->minor->dev;
1166
1167         if (IS_GEN6(dev) || IS_GEN7(dev))
1168                 return gen6_drpc_info(m);
1169         else
1170                 return ironlake_drpc_info(m);
1171 }
1172
1173 static int i915_fbc_status(struct seq_file *m, void *unused)
1174 {
1175         struct drm_info_node *node = (struct drm_info_node *) m->private;
1176         struct drm_device *dev = node->minor->dev;
1177         drm_i915_private_t *dev_priv = dev->dev_private;
1178
1179         if (!I915_HAS_FBC(dev)) {
1180                 seq_printf(m, "FBC unsupported on this chipset\n");
1181                 return 0;
1182         }
1183
1184         if (intel_fbc_enabled(dev)) {
1185                 seq_printf(m, "FBC enabled\n");
1186         } else {
1187                 seq_printf(m, "FBC disabled: ");
1188                 switch (dev_priv->no_fbc_reason) {
1189                 case FBC_NO_OUTPUT:
1190                         seq_printf(m, "no outputs");
1191                         break;
1192                 case FBC_STOLEN_TOO_SMALL:
1193                         seq_printf(m, "not enough stolen memory");
1194                         break;
1195                 case FBC_UNSUPPORTED_MODE:
1196                         seq_printf(m, "mode not supported");
1197                         break;
1198                 case FBC_MODE_TOO_LARGE:
1199                         seq_printf(m, "mode too large");
1200                         break;
1201                 case FBC_BAD_PLANE:
1202                         seq_printf(m, "FBC unsupported on plane");
1203                         break;
1204                 case FBC_NOT_TILED:
1205                         seq_printf(m, "scanout buffer not tiled");
1206                         break;
1207                 case FBC_MULTIPLE_PIPES:
1208                         seq_printf(m, "multiple pipes are enabled");
1209                         break;
1210                 case FBC_MODULE_PARAM:
1211                         seq_printf(m, "disabled per module param (default off)");
1212                         break;
1213                 default:
1214                         seq_printf(m, "unknown reason");
1215                 }
1216                 seq_printf(m, "\n");
1217         }
1218         return 0;
1219 }
1220
1221 static int i915_sr_status(struct seq_file *m, void *unused)
1222 {
1223         struct drm_info_node *node = (struct drm_info_node *) m->private;
1224         struct drm_device *dev = node->minor->dev;
1225         drm_i915_private_t *dev_priv = dev->dev_private;
1226         bool sr_enabled = false;
1227
1228         if (HAS_PCH_SPLIT(dev))
1229                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1230         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1231                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1232         else if (IS_I915GM(dev))
1233                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1234         else if (IS_PINEVIEW(dev))
1235                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1236
1237         seq_printf(m, "self-refresh: %s\n",
1238                    sr_enabled ? "enabled" : "disabled");
1239
1240         return 0;
1241 }
1242
1243 static int i915_emon_status(struct seq_file *m, void *unused)
1244 {
1245         struct drm_info_node *node = (struct drm_info_node *) m->private;
1246         struct drm_device *dev = node->minor->dev;
1247         drm_i915_private_t *dev_priv = dev->dev_private;
1248         unsigned long temp, chipset, gfx;
1249         int ret;
1250
1251         if (!IS_GEN5(dev))
1252                 return -ENODEV;
1253
1254         ret = mutex_lock_interruptible(&dev->struct_mutex);
1255         if (ret)
1256                 return ret;
1257
1258         temp = i915_mch_val(dev_priv);
1259         chipset = i915_chipset_val(dev_priv);
1260         gfx = i915_gfx_val(dev_priv);
1261         mutex_unlock(&dev->struct_mutex);
1262
1263         seq_printf(m, "GMCH temp: %ld\n", temp);
1264         seq_printf(m, "Chipset power: %ld\n", chipset);
1265         seq_printf(m, "GFX power: %ld\n", gfx);
1266         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1267
1268         return 0;
1269 }
1270
1271 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1272 {
1273         struct drm_info_node *node = (struct drm_info_node *) m->private;
1274         struct drm_device *dev = node->minor->dev;
1275         drm_i915_private_t *dev_priv = dev->dev_private;
1276         int ret;
1277         int gpu_freq, ia_freq;
1278
1279         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1280                 seq_printf(m, "unsupported on this chipset\n");
1281                 return 0;
1282         }
1283
1284         ret = mutex_lock_interruptible(&dev->struct_mutex);
1285         if (ret)
1286                 return ret;
1287
1288         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1289
1290         for (gpu_freq = dev_priv->rps.min_delay;
1291              gpu_freq <= dev_priv->rps.max_delay;
1292              gpu_freq++) {
1293                 ia_freq = gpu_freq;
1294                 sandybridge_pcode_read(dev_priv,
1295                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1296                                        &ia_freq);
1297                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1298         }
1299
1300         mutex_unlock(&dev->struct_mutex);
1301
1302         return 0;
1303 }
1304
1305 static int i915_gfxec(struct seq_file *m, void *unused)
1306 {
1307         struct drm_info_node *node = (struct drm_info_node *) m->private;
1308         struct drm_device *dev = node->minor->dev;
1309         drm_i915_private_t *dev_priv = dev->dev_private;
1310         int ret;
1311
1312         ret = mutex_lock_interruptible(&dev->struct_mutex);
1313         if (ret)
1314                 return ret;
1315
1316         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1317
1318         mutex_unlock(&dev->struct_mutex);
1319
1320         return 0;
1321 }
1322
1323 static int i915_opregion(struct seq_file *m, void *unused)
1324 {
1325         struct drm_info_node *node = (struct drm_info_node *) m->private;
1326         struct drm_device *dev = node->minor->dev;
1327         drm_i915_private_t *dev_priv = dev->dev_private;
1328         struct intel_opregion *opregion = &dev_priv->opregion;
1329         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1330         int ret;
1331
1332         if (data == NULL)
1333                 return -ENOMEM;
1334
1335         ret = mutex_lock_interruptible(&dev->struct_mutex);
1336         if (ret)
1337                 goto out;
1338
1339         if (opregion->header) {
1340                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1341                 seq_write(m, data, OPREGION_SIZE);
1342         }
1343
1344         mutex_unlock(&dev->struct_mutex);
1345
1346 out:
1347         kfree(data);
1348         return 0;
1349 }
1350
1351 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1352 {
1353         struct drm_info_node *node = (struct drm_info_node *) m->private;
1354         struct drm_device *dev = node->minor->dev;
1355         drm_i915_private_t *dev_priv = dev->dev_private;
1356         struct intel_fbdev *ifbdev;
1357         struct intel_framebuffer *fb;
1358         int ret;
1359
1360         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1361         if (ret)
1362                 return ret;
1363
1364         ifbdev = dev_priv->fbdev;
1365         fb = to_intel_framebuffer(ifbdev->helper.fb);
1366
1367         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1368                    fb->base.width,
1369                    fb->base.height,
1370                    fb->base.depth,
1371                    fb->base.bits_per_pixel);
1372         describe_obj(m, fb->obj);
1373         seq_printf(m, "\n");
1374
1375         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1376                 if (&fb->base == ifbdev->helper.fb)
1377                         continue;
1378
1379                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1380                            fb->base.width,
1381                            fb->base.height,
1382                            fb->base.depth,
1383                            fb->base.bits_per_pixel);
1384                 describe_obj(m, fb->obj);
1385                 seq_printf(m, "\n");
1386         }
1387
1388         mutex_unlock(&dev->mode_config.mutex);
1389
1390         return 0;
1391 }
1392
1393 static int i915_context_status(struct seq_file *m, void *unused)
1394 {
1395         struct drm_info_node *node = (struct drm_info_node *) m->private;
1396         struct drm_device *dev = node->minor->dev;
1397         drm_i915_private_t *dev_priv = dev->dev_private;
1398         int ret;
1399
1400         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1401         if (ret)
1402                 return ret;
1403
1404         if (dev_priv->pwrctx) {
1405                 seq_printf(m, "power context ");
1406                 describe_obj(m, dev_priv->pwrctx);
1407                 seq_printf(m, "\n");
1408         }
1409
1410         if (dev_priv->renderctx) {
1411                 seq_printf(m, "render context ");
1412                 describe_obj(m, dev_priv->renderctx);
1413                 seq_printf(m, "\n");
1414         }
1415
1416         mutex_unlock(&dev->mode_config.mutex);
1417
1418         return 0;
1419 }
1420
1421 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1422 {
1423         struct drm_info_node *node = (struct drm_info_node *) m->private;
1424         struct drm_device *dev = node->minor->dev;
1425         struct drm_i915_private *dev_priv = dev->dev_private;
1426         unsigned forcewake_count;
1427
1428         spin_lock_irq(&dev_priv->gt_lock);
1429         forcewake_count = dev_priv->forcewake_count;
1430         spin_unlock_irq(&dev_priv->gt_lock);
1431
1432         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1433
1434         return 0;
1435 }
1436
1437 static const char *swizzle_string(unsigned swizzle)
1438 {
1439         switch(swizzle) {
1440         case I915_BIT_6_SWIZZLE_NONE:
1441                 return "none";
1442         case I915_BIT_6_SWIZZLE_9:
1443                 return "bit9";
1444         case I915_BIT_6_SWIZZLE_9_10:
1445                 return "bit9/bit10";
1446         case I915_BIT_6_SWIZZLE_9_11:
1447                 return "bit9/bit11";
1448         case I915_BIT_6_SWIZZLE_9_10_11:
1449                 return "bit9/bit10/bit11";
1450         case I915_BIT_6_SWIZZLE_9_17:
1451                 return "bit9/bit17";
1452         case I915_BIT_6_SWIZZLE_9_10_17:
1453                 return "bit9/bit10/bit17";
1454         case I915_BIT_6_SWIZZLE_UNKNOWN:
1455                 return "unkown";
1456         }
1457
1458         return "bug";
1459 }
1460
1461 static int i915_swizzle_info(struct seq_file *m, void *data)
1462 {
1463         struct drm_info_node *node = (struct drm_info_node *) m->private;
1464         struct drm_device *dev = node->minor->dev;
1465         struct drm_i915_private *dev_priv = dev->dev_private;
1466         int ret;
1467
1468         ret = mutex_lock_interruptible(&dev->struct_mutex);
1469         if (ret)
1470                 return ret;
1471
1472         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1473                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1474         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1475                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1476
1477         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1478                 seq_printf(m, "DDC = 0x%08x\n",
1479                            I915_READ(DCC));
1480                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1481                            I915_READ16(C0DRB3));
1482                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1483                            I915_READ16(C1DRB3));
1484         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1485                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1486                            I915_READ(MAD_DIMM_C0));
1487                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1488                            I915_READ(MAD_DIMM_C1));
1489                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1490                            I915_READ(MAD_DIMM_C2));
1491                 seq_printf(m, "TILECTL = 0x%08x\n",
1492                            I915_READ(TILECTL));
1493                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1494                            I915_READ(ARB_MODE));
1495                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1496                            I915_READ(DISP_ARB_CTL));
1497         }
1498         mutex_unlock(&dev->struct_mutex);
1499
1500         return 0;
1501 }
1502
1503 static int i915_ppgtt_info(struct seq_file *m, void *data)
1504 {
1505         struct drm_info_node *node = (struct drm_info_node *) m->private;
1506         struct drm_device *dev = node->minor->dev;
1507         struct drm_i915_private *dev_priv = dev->dev_private;
1508         struct intel_ring_buffer *ring;
1509         int i, ret;
1510
1511
1512         ret = mutex_lock_interruptible(&dev->struct_mutex);
1513         if (ret)
1514                 return ret;
1515         if (INTEL_INFO(dev)->gen == 6)
1516                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1517
1518         for_each_ring(ring, dev_priv, i) {
1519                 seq_printf(m, "%s\n", ring->name);
1520                 if (INTEL_INFO(dev)->gen == 7)
1521                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1522                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1523                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1524                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1525         }
1526         if (dev_priv->mm.aliasing_ppgtt) {
1527                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1528
1529                 seq_printf(m, "aliasing PPGTT:\n");
1530                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1531         }
1532         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1533         mutex_unlock(&dev->struct_mutex);
1534
1535         return 0;
1536 }
1537
1538 static int i915_dpio_info(struct seq_file *m, void *data)
1539 {
1540         struct drm_info_node *node = (struct drm_info_node *) m->private;
1541         struct drm_device *dev = node->minor->dev;
1542         struct drm_i915_private *dev_priv = dev->dev_private;
1543         int ret;
1544
1545
1546         if (!IS_VALLEYVIEW(dev)) {
1547                 seq_printf(m, "unsupported\n");
1548                 return 0;
1549         }
1550
1551         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1552         if (ret)
1553                 return ret;
1554
1555         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1556
1557         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1558                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1559         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1560                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1561
1562         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1563                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1564         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1565                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1566
1567         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1568                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1569         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1570                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1571
1572         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1573                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1574         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1575                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1576
1577         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1578                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1579
1580         mutex_unlock(&dev->mode_config.mutex);
1581
1582         return 0;
1583 }
1584
1585 static ssize_t
1586 i915_wedged_read(struct file *filp,
1587                  char __user *ubuf,
1588                  size_t max,
1589                  loff_t *ppos)
1590 {
1591         struct drm_device *dev = filp->private_data;
1592         drm_i915_private_t *dev_priv = dev->dev_private;
1593         char buf[80];
1594         int len;
1595
1596         len = snprintf(buf, sizeof(buf),
1597                        "wedged :  %d\n",
1598                        atomic_read(&dev_priv->mm.wedged));
1599
1600         if (len > sizeof(buf))
1601                 len = sizeof(buf);
1602
1603         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1604 }
1605
1606 static ssize_t
1607 i915_wedged_write(struct file *filp,
1608                   const char __user *ubuf,
1609                   size_t cnt,
1610                   loff_t *ppos)
1611 {
1612         struct drm_device *dev = filp->private_data;
1613         char buf[20];
1614         int val = 1;
1615
1616         if (cnt > 0) {
1617                 if (cnt > sizeof(buf) - 1)
1618                         return -EINVAL;
1619
1620                 if (copy_from_user(buf, ubuf, cnt))
1621                         return -EFAULT;
1622                 buf[cnt] = 0;
1623
1624                 val = simple_strtoul(buf, NULL, 0);
1625         }
1626
1627         DRM_INFO("Manually setting wedged to %d\n", val);
1628         i915_handle_error(dev, val);
1629
1630         return cnt;
1631 }
1632
1633 static const struct file_operations i915_wedged_fops = {
1634         .owner = THIS_MODULE,
1635         .open = simple_open,
1636         .read = i915_wedged_read,
1637         .write = i915_wedged_write,
1638         .llseek = default_llseek,
1639 };
1640
1641 static ssize_t
1642 i915_ring_stop_read(struct file *filp,
1643                     char __user *ubuf,
1644                     size_t max,
1645                     loff_t *ppos)
1646 {
1647         struct drm_device *dev = filp->private_data;
1648         drm_i915_private_t *dev_priv = dev->dev_private;
1649         char buf[20];
1650         int len;
1651
1652         len = snprintf(buf, sizeof(buf),
1653                        "0x%08x\n", dev_priv->stop_rings);
1654
1655         if (len > sizeof(buf))
1656                 len = sizeof(buf);
1657
1658         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1659 }
1660
1661 static ssize_t
1662 i915_ring_stop_write(struct file *filp,
1663                      const char __user *ubuf,
1664                      size_t cnt,
1665                      loff_t *ppos)
1666 {
1667         struct drm_device *dev = filp->private_data;
1668         struct drm_i915_private *dev_priv = dev->dev_private;
1669         char buf[20];
1670         int val = 0, ret;
1671
1672         if (cnt > 0) {
1673                 if (cnt > sizeof(buf) - 1)
1674                         return -EINVAL;
1675
1676                 if (copy_from_user(buf, ubuf, cnt))
1677                         return -EFAULT;
1678                 buf[cnt] = 0;
1679
1680                 val = simple_strtoul(buf, NULL, 0);
1681         }
1682
1683         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1684
1685         ret = mutex_lock_interruptible(&dev->struct_mutex);
1686         if (ret)
1687                 return ret;
1688
1689         dev_priv->stop_rings = val;
1690         mutex_unlock(&dev->struct_mutex);
1691
1692         return cnt;
1693 }
1694
1695 static const struct file_operations i915_ring_stop_fops = {
1696         .owner = THIS_MODULE,
1697         .open = simple_open,
1698         .read = i915_ring_stop_read,
1699         .write = i915_ring_stop_write,
1700         .llseek = default_llseek,
1701 };
1702
1703 static ssize_t
1704 i915_max_freq_read(struct file *filp,
1705                    char __user *ubuf,
1706                    size_t max,
1707                    loff_t *ppos)
1708 {
1709         struct drm_device *dev = filp->private_data;
1710         drm_i915_private_t *dev_priv = dev->dev_private;
1711         char buf[80];
1712         int len, ret;
1713
1714         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1715                 return -ENODEV;
1716
1717         ret = mutex_lock_interruptible(&dev->struct_mutex);
1718         if (ret)
1719                 return ret;
1720
1721         len = snprintf(buf, sizeof(buf),
1722                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1723         mutex_unlock(&dev->struct_mutex);
1724
1725         if (len > sizeof(buf))
1726                 len = sizeof(buf);
1727
1728         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1729 }
1730
1731 static ssize_t
1732 i915_max_freq_write(struct file *filp,
1733                   const char __user *ubuf,
1734                   size_t cnt,
1735                   loff_t *ppos)
1736 {
1737         struct drm_device *dev = filp->private_data;
1738         struct drm_i915_private *dev_priv = dev->dev_private;
1739         char buf[20];
1740         int val = 1, ret;
1741
1742         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1743                 return -ENODEV;
1744
1745         if (cnt > 0) {
1746                 if (cnt > sizeof(buf) - 1)
1747                         return -EINVAL;
1748
1749                 if (copy_from_user(buf, ubuf, cnt))
1750                         return -EFAULT;
1751                 buf[cnt] = 0;
1752
1753                 val = simple_strtoul(buf, NULL, 0);
1754         }
1755
1756         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1757
1758         ret = mutex_lock_interruptible(&dev->struct_mutex);
1759         if (ret)
1760                 return ret;
1761
1762         /*
1763          * Turbo will still be enabled, but won't go above the set value.
1764          */
1765         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1766
1767         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1768         mutex_unlock(&dev->struct_mutex);
1769
1770         return cnt;
1771 }
1772
1773 static const struct file_operations i915_max_freq_fops = {
1774         .owner = THIS_MODULE,
1775         .open = simple_open,
1776         .read = i915_max_freq_read,
1777         .write = i915_max_freq_write,
1778         .llseek = default_llseek,
1779 };
1780
1781 static ssize_t
1782 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1783                    loff_t *ppos)
1784 {
1785         struct drm_device *dev = filp->private_data;
1786         drm_i915_private_t *dev_priv = dev->dev_private;
1787         char buf[80];
1788         int len, ret;
1789
1790         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1791                 return -ENODEV;
1792
1793         ret = mutex_lock_interruptible(&dev->struct_mutex);
1794         if (ret)
1795                 return ret;
1796
1797         len = snprintf(buf, sizeof(buf),
1798                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1799         mutex_unlock(&dev->struct_mutex);
1800
1801         if (len > sizeof(buf))
1802                 len = sizeof(buf);
1803
1804         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1805 }
1806
1807 static ssize_t
1808 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
1809                     loff_t *ppos)
1810 {
1811         struct drm_device *dev = filp->private_data;
1812         struct drm_i915_private *dev_priv = dev->dev_private;
1813         char buf[20];
1814         int val = 1, ret;
1815
1816         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1817                 return -ENODEV;
1818
1819         if (cnt > 0) {
1820                 if (cnt > sizeof(buf) - 1)
1821                         return -EINVAL;
1822
1823                 if (copy_from_user(buf, ubuf, cnt))
1824                         return -EFAULT;
1825                 buf[cnt] = 0;
1826
1827                 val = simple_strtoul(buf, NULL, 0);
1828         }
1829
1830         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
1831
1832         ret = mutex_lock_interruptible(&dev->struct_mutex);
1833         if (ret)
1834                 return ret;
1835
1836         /*
1837          * Turbo will still be enabled, but won't go below the set value.
1838          */
1839         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
1840
1841         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1842         mutex_unlock(&dev->struct_mutex);
1843
1844         return cnt;
1845 }
1846
1847 static const struct file_operations i915_min_freq_fops = {
1848         .owner = THIS_MODULE,
1849         .open = simple_open,
1850         .read = i915_min_freq_read,
1851         .write = i915_min_freq_write,
1852         .llseek = default_llseek,
1853 };
1854
1855 static ssize_t
1856 i915_cache_sharing_read(struct file *filp,
1857                    char __user *ubuf,
1858                    size_t max,
1859                    loff_t *ppos)
1860 {
1861         struct drm_device *dev = filp->private_data;
1862         drm_i915_private_t *dev_priv = dev->dev_private;
1863         char buf[80];
1864         u32 snpcr;
1865         int len, ret;
1866
1867         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1868                 return -ENODEV;
1869
1870         ret = mutex_lock_interruptible(&dev->struct_mutex);
1871         if (ret)
1872                 return ret;
1873
1874         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1875         mutex_unlock(&dev_priv->dev->struct_mutex);
1876
1877         len = snprintf(buf, sizeof(buf),
1878                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1879                        GEN6_MBC_SNPCR_SHIFT);
1880
1881         if (len > sizeof(buf))
1882                 len = sizeof(buf);
1883
1884         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1885 }
1886
1887 static ssize_t
1888 i915_cache_sharing_write(struct file *filp,
1889                   const char __user *ubuf,
1890                   size_t cnt,
1891                   loff_t *ppos)
1892 {
1893         struct drm_device *dev = filp->private_data;
1894         struct drm_i915_private *dev_priv = dev->dev_private;
1895         char buf[20];
1896         u32 snpcr;
1897         int val = 1;
1898
1899         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1900                 return -ENODEV;
1901
1902         if (cnt > 0) {
1903                 if (cnt > sizeof(buf) - 1)
1904                         return -EINVAL;
1905
1906                 if (copy_from_user(buf, ubuf, cnt))
1907                         return -EFAULT;
1908                 buf[cnt] = 0;
1909
1910                 val = simple_strtoul(buf, NULL, 0);
1911         }
1912
1913         if (val < 0 || val > 3)
1914                 return -EINVAL;
1915
1916         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1917
1918         /* Update the cache sharing policy here as well */
1919         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1920         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1921         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1922         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1923
1924         return cnt;
1925 }
1926
1927 static const struct file_operations i915_cache_sharing_fops = {
1928         .owner = THIS_MODULE,
1929         .open = simple_open,
1930         .read = i915_cache_sharing_read,
1931         .write = i915_cache_sharing_write,
1932         .llseek = default_llseek,
1933 };
1934
1935 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1936  * allocated we need to hook into the minor for release. */
1937 static int
1938 drm_add_fake_info_node(struct drm_minor *minor,
1939                        struct dentry *ent,
1940                        const void *key)
1941 {
1942         struct drm_info_node *node;
1943
1944         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1945         if (node == NULL) {
1946                 debugfs_remove(ent);
1947                 return -ENOMEM;
1948         }
1949
1950         node->minor = minor;
1951         node->dent = ent;
1952         node->info_ent = (void *) key;
1953
1954         mutex_lock(&minor->debugfs_lock);
1955         list_add(&node->list, &minor->debugfs_list);
1956         mutex_unlock(&minor->debugfs_lock);
1957
1958         return 0;
1959 }
1960
1961 static int i915_forcewake_open(struct inode *inode, struct file *file)
1962 {
1963         struct drm_device *dev = inode->i_private;
1964         struct drm_i915_private *dev_priv = dev->dev_private;
1965
1966         if (INTEL_INFO(dev)->gen < 6)
1967                 return 0;
1968
1969         gen6_gt_force_wake_get(dev_priv);
1970
1971         return 0;
1972 }
1973
1974 static int i915_forcewake_release(struct inode *inode, struct file *file)
1975 {
1976         struct drm_device *dev = inode->i_private;
1977         struct drm_i915_private *dev_priv = dev->dev_private;
1978
1979         if (INTEL_INFO(dev)->gen < 6)
1980                 return 0;
1981
1982         gen6_gt_force_wake_put(dev_priv);
1983
1984         return 0;
1985 }
1986
1987 static const struct file_operations i915_forcewake_fops = {
1988         .owner = THIS_MODULE,
1989         .open = i915_forcewake_open,
1990         .release = i915_forcewake_release,
1991 };
1992
1993 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1994 {
1995         struct drm_device *dev = minor->dev;
1996         struct dentry *ent;
1997
1998         ent = debugfs_create_file("i915_forcewake_user",
1999                                   S_IRUSR,
2000                                   root, dev,
2001                                   &i915_forcewake_fops);
2002         if (IS_ERR(ent))
2003                 return PTR_ERR(ent);
2004
2005         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2006 }
2007
2008 static int i915_debugfs_create(struct dentry *root,
2009                                struct drm_minor *minor,
2010                                const char *name,
2011                                const struct file_operations *fops)
2012 {
2013         struct drm_device *dev = minor->dev;
2014         struct dentry *ent;
2015
2016         ent = debugfs_create_file(name,
2017                                   S_IRUGO | S_IWUSR,
2018                                   root, dev,
2019                                   fops);
2020         if (IS_ERR(ent))
2021                 return PTR_ERR(ent);
2022
2023         return drm_add_fake_info_node(minor, ent, fops);
2024 }
2025
2026 static struct drm_info_list i915_debugfs_list[] = {
2027         {"i915_capabilities", i915_capabilities, 0},
2028         {"i915_gem_objects", i915_gem_object_info, 0},
2029         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2030         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2031         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2032         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2033         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2034         {"i915_gem_request", i915_gem_request_info, 0},
2035         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2036         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2037         {"i915_gem_interrupt", i915_interrupt_info, 0},
2038         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2039         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2040         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2041         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2042         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2043         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2044         {"i915_inttoext_table", i915_inttoext_table, 0},
2045         {"i915_drpc_info", i915_drpc_info, 0},
2046         {"i915_emon_status", i915_emon_status, 0},
2047         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2048         {"i915_gfxec", i915_gfxec, 0},
2049         {"i915_fbc_status", i915_fbc_status, 0},
2050         {"i915_sr_status", i915_sr_status, 0},
2051         {"i915_opregion", i915_opregion, 0},
2052         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2053         {"i915_context_status", i915_context_status, 0},
2054         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2055         {"i915_swizzle_info", i915_swizzle_info, 0},
2056         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2057         {"i915_dpio", i915_dpio_info, 0},
2058 };
2059 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2060
2061 int i915_debugfs_init(struct drm_minor *minor)
2062 {
2063         int ret;
2064
2065         ret = i915_debugfs_create(minor->debugfs_root, minor,
2066                                   "i915_wedged",
2067                                   &i915_wedged_fops);
2068         if (ret)
2069                 return ret;
2070
2071         ret = i915_forcewake_create(minor->debugfs_root, minor);
2072         if (ret)
2073                 return ret;
2074
2075         ret = i915_debugfs_create(minor->debugfs_root, minor,
2076                                   "i915_max_freq",
2077                                   &i915_max_freq_fops);
2078         if (ret)
2079                 return ret;
2080
2081         ret = i915_debugfs_create(minor->debugfs_root, minor,
2082                                   "i915_min_freq",
2083                                   &i915_min_freq_fops);
2084         if (ret)
2085                 return ret;
2086
2087         ret = i915_debugfs_create(minor->debugfs_root, minor,
2088                                   "i915_cache_sharing",
2089                                   &i915_cache_sharing_fops);
2090         if (ret)
2091                 return ret;
2092
2093         ret = i915_debugfs_create(minor->debugfs_root, minor,
2094                                   "i915_ring_stop",
2095                                   &i915_ring_stop_fops);
2096         if (ret)
2097                 return ret;
2098
2099         ret = i915_debugfs_create(minor->debugfs_root, minor,
2100                                   "i915_error_state",
2101                                   &i915_error_state_fops);
2102         if (ret)
2103                 return ret;
2104
2105         return drm_debugfs_create_files(i915_debugfs_list,
2106                                         I915_DEBUGFS_ENTRIES,
2107                                         minor->debugfs_root, minor);
2108 }
2109
2110 void i915_debugfs_cleanup(struct drm_minor *minor)
2111 {
2112         drm_debugfs_remove_files(i915_debugfs_list,
2113                                  I915_DEBUGFS_ENTRIES, minor);
2114         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2115                                  1, minor);
2116         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2117                                  1, minor);
2118         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2119                                  1, minor);
2120         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2121                                  1, minor);
2122         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2123                                  1, minor);
2124         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2125                                  1, minor);
2126         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2127                                  1, minor);
2128 }
2129
2130 #endif /* CONFIG_DEBUG_FS */