drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include <linux/export.h>
  33 #include <drm/drmP.h>
  34 #include "intel_drv.h"
  35 #include "intel_ringbuffer.h"
  36 #include <drm/i915_drm.h>
  37 #include "i915_drv.h"
  38
  39 #define DRM_I915_RING_DEBUG 1
  40
  41
  42 #if defined(CONFIG_DEBUG_FS)
  43
  44 enum {
  45         ACTIVE_LIST,
  46         INACTIVE_LIST,
  47         PINNED_LIST,
  48 };
  49
  50 static const char *yesno(int v)
  51 {
  52         return v ? "yes" : "no";
  53 }
  54
  55 static int i915_capabilities(struct seq_file *m, void *data)
  56 {
  57         struct drm_info_node *node = (struct drm_info_node *) m->private;
  58         struct drm_device *dev = node->minor->dev;
  59         const struct intel_device_info *info = INTEL_INFO(dev);
  60
  61         seq_printf(m, "gen: %d\n", info->gen);
  62         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  63 #define DEV_INFO_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  64 #define DEV_INFO_SEP ;
  65         DEV_INFO_FLAGS;
  66 #undef DEV_INFO_FLAG
  67 #undef DEV_INFO_SEP
  68
  69         return 0;
  70 }
  71
  72 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  73 {
  74         if (obj->user_pin_count > 0)
  75                 return "P";
  76         else if (obj->pin_count > 0)
  77                 return "p";
  78         else
  79                 return " ";
  80 }
  81
  82 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
  83 {
  84         switch (obj->tiling_mode) {
  85         default:
  86         case I915_TILING_NONE: return " ";
  87         case I915_TILING_X: return "X";
  88         case I915_TILING_Y: return "Y";
  89         }
  90 }
  91
  92 static const char *cache_level_str(int type)
  93 {
  94         switch (type) {
  95         case I915_CACHE_NONE: return " uncached";
  96         case I915_CACHE_LLC: return " snooped (LLC)";
  97         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
  98         default: return "";
  99         }
 100 }
 101
 102 static void
 103 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 104 {
 105         seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d %d%s%s%s",
 106                    &obj->base,
 107                    get_pin_flag(obj),
 108                    get_tiling_flag(obj),
 109                    obj->base.size / 1024,
 110                    obj->base.read_domains,
 111                    obj->base.write_domain,
 112                    obj->last_read_seqno,
 113                    obj->last_write_seqno,
 114                    obj->last_fenced_seqno,
 115                    cache_level_str(obj->cache_level),
 116                    obj->dirty ? " dirty" : "",
 117                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 118         if (obj->base.name)
 119                 seq_printf(m, " (name: %d)", obj->base.name);
 120         if (obj->pin_count)
 121                 seq_printf(m, " (pinned x %d)", obj->pin_count);
 122         if (obj->fence_reg != I915_FENCE_REG_NONE)
 123                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 124         if (obj->gtt_space != NULL)
 125                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 126                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 127         if (obj->pin_mappable || obj->fault_mappable) {
 128                 char s[3], *t = s;
 129                 if (obj->pin_mappable)
 130                         *t++ = 'p';
 131                 if (obj->fault_mappable)
 132                         *t++ = 'f';
 133                 *t = '\0';
 134                 seq_printf(m, " (%s mappable)", s);
 135         }
 136         if (obj->ring != NULL)
 137                 seq_printf(m, " (%s)", obj->ring->name);
 138 }
 139
 140 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 141 {
 142         struct drm_info_node *node = (struct drm_info_node *) m->private;
 143         uintptr_t list = (uintptr_t) node->info_ent->data;
 144         struct list_head *head;
 145         struct drm_device *dev = node->minor->dev;
 146         drm_i915_private_t *dev_priv = dev->dev_private;
 147         struct drm_i915_gem_object *obj;
 148         size_t total_obj_size, total_gtt_size;
 149         int count, ret;
 150
 151         ret = mutex_lock_interruptible(&dev->struct_mutex);
 152         if (ret)
 153                 return ret;
 154
 155         switch (list) {
 156         case ACTIVE_LIST:
 157                 seq_printf(m, "Active:\n");
 158                 head = &dev_priv->mm.active_list;
 159                 break;
 160         case INACTIVE_LIST:
 161                 seq_printf(m, "Inactive:\n");
 162                 head = &dev_priv->mm.inactive_list;
 163                 break;
 164         default:
 165                 mutex_unlock(&dev->struct_mutex);
 166                 return -EINVAL;
 167         }
 168
 169         total_obj_size = total_gtt_size = count = 0;
 170         list_for_each_entry(obj, head, mm_list) {
 171                 seq_printf(m, "   ");
 172                 describe_obj(m, obj);
 173                 seq_printf(m, "\n");
 174                 total_obj_size += obj->base.size;
 175                 total_gtt_size += obj->gtt_space->size;
 176                 count++;
 177         }
 178         mutex_unlock(&dev->struct_mutex);
 179
 180         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 181                    count, total_obj_size, total_gtt_size);
 182         return 0;
 183 }
 184
 185 #define count_objects(list, member) do { \
 186         list_for_each_entry(obj, list, member) { \
 187                 size += obj->gtt_space->size; \
 188                 ++count; \
 189                 if (obj->map_and_fenceable) { \
 190                         mappable_size += obj->gtt_space->size; \
 191                         ++mappable_count; \
 192                 } \
 193         } \
 194 } while (0)
 195
 196 static int i915_gem_object_info(struct seq_file *m, void* data)
 197 {
 198         struct drm_info_node *node = (struct drm_info_node *) m->private;
 199         struct drm_device *dev = node->minor->dev;
 200         struct drm_i915_private *dev_priv = dev->dev_private;
 201         u32 count, mappable_count, purgeable_count;
 202         size_t size, mappable_size, purgeable_size;
 203         struct drm_i915_gem_object *obj;
 204         int ret;
 205
 206         ret = mutex_lock_interruptible(&dev->struct_mutex);
 207         if (ret)
 208                 return ret;
 209
 210         seq_printf(m, "%u objects, %zu bytes\n",
 211                    dev_priv->mm.object_count,
 212                    dev_priv->mm.object_memory);
 213
 214         size = count = mappable_size = mappable_count = 0;
 215         count_objects(&dev_priv->mm.bound_list, gtt_list);
 216         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 217                    count, mappable_count, size, mappable_size);
 218
 219         size = count = mappable_size = mappable_count = 0;
 220         count_objects(&dev_priv->mm.active_list, mm_list);
 221         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 222                    count, mappable_count, size, mappable_size);
 223
 224         size = count = mappable_size = mappable_count = 0;
 225         count_objects(&dev_priv->mm.inactive_list, mm_list);
 226         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 227                    count, mappable_count, size, mappable_size);
 228
 229         size = count = purgeable_size = purgeable_count = 0;
 230         list_for_each_entry(obj, &dev_priv->mm.unbound_list, gtt_list) {
 231                 size += obj->base.size, ++count;
 232                 if (obj->madv == I915_MADV_DONTNEED)
 233                         purgeable_size += obj->base.size, ++purgeable_count;
 234         }
 235         seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
 236
 237         size = count = mappable_size = mappable_count = 0;
 238         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 239                 if (obj->fault_mappable) {
 240                         size += obj->gtt_space->size;
 241                         ++count;
 242                 }
 243                 if (obj->pin_mappable) {
 244                         mappable_size += obj->gtt_space->size;
 245                         ++mappable_count;
 246                 }
 247                 if (obj->madv == I915_MADV_DONTNEED) {
 248                         purgeable_size += obj->base.size;
 249                         ++purgeable_count;
 250                 }
 251         }
 252         seq_printf(m, "%u purgeable objects, %zu bytes\n",
 253                    purgeable_count, purgeable_size);
 254         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 255                    mappable_count, mappable_size);
 256         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 257                    count, size);
 258
 259         seq_printf(m, "%zu [%zu] gtt total\n",
 260                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 261
 262         mutex_unlock(&dev->struct_mutex);
 263
 264         return 0;
 265 }
 266
 267 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 268 {
 269         struct drm_info_node *node = (struct drm_info_node *) m->private;
 270         struct drm_device *dev = node->minor->dev;
 271         uintptr_t list = (uintptr_t) node->info_ent->data;
 272         struct drm_i915_private *dev_priv = dev->dev_private;
 273         struct drm_i915_gem_object *obj;
 274         size_t total_obj_size, total_gtt_size;
 275         int count, ret;
 276
 277         ret = mutex_lock_interruptible(&dev->struct_mutex);
 278         if (ret)
 279                 return ret;
 280
 281         total_obj_size = total_gtt_size = count = 0;
 282         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
 283                 if (list == PINNED_LIST && obj->pin_count == 0)
 284                         continue;
 285
 286                 seq_printf(m, "   ");
 287                 describe_obj(m, obj);
 288                 seq_printf(m, "\n");
 289                 total_obj_size += obj->base.size;
 290                 total_gtt_size += obj->gtt_space->size;
 291                 count++;
 292         }
 293
 294         mutex_unlock(&dev->struct_mutex);
 295
 296         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 297                    count, total_obj_size, total_gtt_size);
 298
 299         return 0;
 300 }
 301
 302 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 303 {
 304         struct drm_info_node *node = (struct drm_info_node *) m->private;
 305         struct drm_device *dev = node->minor->dev;
 306         unsigned long flags;
 307         struct intel_crtc *crtc;
 308
 309         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 310                 const char pipe = pipe_name(crtc->pipe);
 311                 const char plane = plane_name(crtc->plane);
 312                 struct intel_unpin_work *work;
 313
 314                 spin_lock_irqsave(&dev->event_lock, flags);
 315                 work = crtc->unpin_work;
 316                 if (work == NULL) {
 317                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 318                                    pipe, plane);
 319                 } else {
 320                         if (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
 321                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 322                                            pipe, plane);
 323                         } else {
 324                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 325                                            pipe, plane);
 326                         }
 327                         if (work->enable_stall_check)
 328                                 seq_printf(m, "Stall check enabled, ");
 329                         else
 330                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 331                         seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
 332
 333                         if (work->old_fb_obj) {
 334                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 335                                 if (obj)
 336                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 337                         }
 338                         if (work->pending_flip_obj) {
 339                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 340                                 if (obj)
 341                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 342                         }
 343                 }
 344                 spin_unlock_irqrestore(&dev->event_lock, flags);
 345         }
 346
 347         return 0;
 348 }
 349
 350 static int i915_gem_request_info(struct seq_file *m, void *data)
 351 {
 352         struct drm_info_node *node = (struct drm_info_node *) m->private;
 353         struct drm_device *dev = node->minor->dev;
 354         drm_i915_private_t *dev_priv = dev->dev_private;
 355         struct intel_ring_buffer *ring;
 356         struct drm_i915_gem_request *gem_request;
 357         int ret, count, i;
 358
 359         ret = mutex_lock_interruptible(&dev->struct_mutex);
 360         if (ret)
 361                 return ret;
 362
 363         count = 0;
 364         for_each_ring(ring, dev_priv, i) {
 365                 if (list_empty(&ring->request_list))
 366                         continue;
 367
 368                 seq_printf(m, "%s requests:\n", ring->name);
 369                 list_for_each_entry(gem_request,
 370                                     &ring->request_list,
 371                                     list) {
 372                         seq_printf(m, "    %d @ %d\n",
 373                                    gem_request->seqno,
 374                                    (int) (jiffies - gem_request->emitted_jiffies));
 375                 }
 376                 count++;
 377         }
 378         mutex_unlock(&dev->struct_mutex);
 379
 380         if (count == 0)
 381                 seq_printf(m, "No requests\n");
 382
 383         return 0;
 384 }
 385
 386 static void i915_ring_seqno_info(struct seq_file *m,
 387                                  struct intel_ring_buffer *ring)
 388 {
 389         if (ring->get_seqno) {
 390                 seq_printf(m, "Current sequence (%s): %d\n",
 391                            ring->name, ring->get_seqno(ring, false));
 392         }
 393 }
 394
 395 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 396 {
 397         struct drm_info_node *node = (struct drm_info_node *) m->private;
 398         struct drm_device *dev = node->minor->dev;
 399         drm_i915_private_t *dev_priv = dev->dev_private;
 400         struct intel_ring_buffer *ring;
 401         int ret, i;
 402
 403         ret = mutex_lock_interruptible(&dev->struct_mutex);
 404         if (ret)
 405                 return ret;
 406
 407         for_each_ring(ring, dev_priv, i)
 408                 i915_ring_seqno_info(m, ring);
 409
 410         mutex_unlock(&dev->struct_mutex);
 411
 412         return 0;
 413 }
 414
 415
 416 static int i915_interrupt_info(struct seq_file *m, void *data)
 417 {
 418         struct drm_info_node *node = (struct drm_info_node *) m->private;
 419         struct drm_device *dev = node->minor->dev;
 420         drm_i915_private_t *dev_priv = dev->dev_private;
 421         struct intel_ring_buffer *ring;
 422         int ret, i, pipe;
 423
 424         ret = mutex_lock_interruptible(&dev->struct_mutex);
 425         if (ret)
 426                 return ret;
 427
 428         if (IS_VALLEYVIEW(dev)) {
 429                 seq_printf(m, "Display IER:\t%08x\n",
 430                            I915_READ(VLV_IER));
 431                 seq_printf(m, "Display IIR:\t%08x\n",
 432                            I915_READ(VLV_IIR));
 433                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 434                            I915_READ(VLV_IIR_RW));
 435                 seq_printf(m, "Display IMR:\t%08x\n",
 436                            I915_READ(VLV_IMR));
 437                 for_each_pipe(pipe)
 438                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 439                                    pipe_name(pipe),
 440                                    I915_READ(PIPESTAT(pipe)));
 441
 442                 seq_printf(m, "Master IER:\t%08x\n",
 443                            I915_READ(VLV_MASTER_IER));
 444
 445                 seq_printf(m, "Render IER:\t%08x\n",
 446                            I915_READ(GTIER));
 447                 seq_printf(m, "Render IIR:\t%08x\n",
 448                            I915_READ(GTIIR));
 449                 seq_printf(m, "Render IMR:\t%08x\n",
 450                            I915_READ(GTIMR));
 451
 452                 seq_printf(m, "PM IER:\t\t%08x\n",
 453                            I915_READ(GEN6_PMIER));
 454                 seq_printf(m, "PM IIR:\t\t%08x\n",
 455                            I915_READ(GEN6_PMIIR));
 456                 seq_printf(m, "PM IMR:\t\t%08x\n",
 457                            I915_READ(GEN6_PMIMR));
 458
 459                 seq_printf(m, "Port hotplug:\t%08x\n",
 460                            I915_READ(PORT_HOTPLUG_EN));
 461                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 462                            I915_READ(VLV_DPFLIPSTAT));
 463                 seq_printf(m, "DPINVGTT:\t%08x\n",
 464                            I915_READ(DPINVGTT));
 465
 466         } else if (!HAS_PCH_SPLIT(dev)) {
 467                 seq_printf(m, "Interrupt enable:    %08x\n",
 468                            I915_READ(IER));
 469                 seq_printf(m, "Interrupt identity:  %08x\n",
 470                            I915_READ(IIR));
 471                 seq_printf(m, "Interrupt mask:      %08x\n",
 472                            I915_READ(IMR));
 473                 for_each_pipe(pipe)
 474                         seq_printf(m, "Pipe %c stat:         %08x\n",
 475                                    pipe_name(pipe),
 476                                    I915_READ(PIPESTAT(pipe)));
 477         } else {
 478                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 479                            I915_READ(DEIER));
 480                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 481                            I915_READ(DEIIR));
 482                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 483                            I915_READ(DEIMR));
 484                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 485                            I915_READ(SDEIER));
 486                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 487                            I915_READ(SDEIIR));
 488                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 489                            I915_READ(SDEIMR));
 490                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 491                            I915_READ(GTIER));
 492                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 493                            I915_READ(GTIIR));
 494                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 495                            I915_READ(GTIMR));
 496         }
 497         seq_printf(m, "Interrupts received: %d\n",
 498                    atomic_read(&dev_priv->irq_received));
 499         for_each_ring(ring, dev_priv, i) {
 500                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 501                         seq_printf(m,
 502                                    "Graphics Interrupt mask (%s):       %08x\n",
 503                                    ring->name, I915_READ_IMR(ring));
 504                 }
 505                 i915_ring_seqno_info(m, ring);
 506         }
 507         mutex_unlock(&dev->struct_mutex);
 508
 509         return 0;
 510 }
 511
 512 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 513 {
 514         struct drm_info_node *node = (struct drm_info_node *) m->private;
 515         struct drm_device *dev = node->minor->dev;
 516         drm_i915_private_t *dev_priv = dev->dev_private;
 517         int i, ret;
 518
 519         ret = mutex_lock_interruptible(&dev->struct_mutex);
 520         if (ret)
 521                 return ret;
 522
 523         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 524         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 525         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 526                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 527
 528                 seq_printf(m, "Fence %d, pin count = %d, object = ",
 529                            i, dev_priv->fence_regs[i].pin_count);
 530                 if (obj == NULL)
 531                         seq_printf(m, "unused");
 532                 else
 533                         describe_obj(m, obj);
 534                 seq_printf(m, "\n");
 535         }
 536
 537         mutex_unlock(&dev->struct_mutex);
 538         return 0;
 539 }
 540
 541 static int i915_hws_info(struct seq_file *m, void *data)
 542 {
 543         struct drm_info_node *node = (struct drm_info_node *) m->private;
 544         struct drm_device *dev = node->minor->dev;
 545         drm_i915_private_t *dev_priv = dev->dev_private;
 546         struct intel_ring_buffer *ring;
 547         const volatile u32 __iomem *hws;
 548         int i;
 549
 550         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 551         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 552         if (hws == NULL)
 553                 return 0;
 554
 555         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 556                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 557                            i * 4,
 558                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 559         }
 560         return 0;
 561 }
 562
 563 static const char *ring_str(int ring)
 564 {
 565         switch (ring) {
 566         case RCS: return "render";
 567         case VCS: return "bsd";
 568         case BCS: return "blt";
 569         default: return "";
 570         }
 571 }
 572
 573 static const char *pin_flag(int pinned)
 574 {
 575         if (pinned > 0)
 576                 return " P";
 577         else if (pinned < 0)
 578                 return " p";
 579         else
 580                 return "";
 581 }
 582
 583 static const char *tiling_flag(int tiling)
 584 {
 585         switch (tiling) {
 586         default:
 587         case I915_TILING_NONE: return "";
 588         case I915_TILING_X: return " X";
 589         case I915_TILING_Y: return " Y";
 590         }
 591 }
 592
 593 static const char *dirty_flag(int dirty)
 594 {
 595         return dirty ? " dirty" : "";
 596 }
 597
 598 static const char *purgeable_flag(int purgeable)
 599 {
 600         return purgeable ? " purgeable" : "";
 601 }
 602
 603 static void print_error_buffers(struct seq_file *m,
 604                                 const char *name,
 605                                 struct drm_i915_error_buffer *err,
 606                                 int count)
 607 {
 608         seq_printf(m, "%s [%d]:\n", name, count);
 609
 610         while (count--) {
 611                 seq_printf(m, "  %08x %8u %04x %04x %x %x%s%s%s%s%s%s%s",
 612                            err->gtt_offset,
 613                            err->size,
 614                            err->read_domains,
 615                            err->write_domain,
 616                            err->rseqno, err->wseqno,
 617                            pin_flag(err->pinned),
 618                            tiling_flag(err->tiling),
 619                            dirty_flag(err->dirty),
 620                            purgeable_flag(err->purgeable),
 621                            err->ring != -1 ? " " : "",
 622                            ring_str(err->ring),
 623                            cache_level_str(err->cache_level));
 624
 625                 if (err->name)
 626                         seq_printf(m, " (name: %d)", err->name);
 627                 if (err->fence_reg != I915_FENCE_REG_NONE)
 628                         seq_printf(m, " (fence: %d)", err->fence_reg);
 629
 630                 seq_printf(m, "\n");
 631                 err++;
 632         }
 633 }
 634
 635 static void i915_ring_error_state(struct seq_file *m,
 636                                   struct drm_device *dev,
 637                                   struct drm_i915_error_state *error,
 638                                   unsigned ring)
 639 {
 640         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
 641         seq_printf(m, "%s command stream:\n", ring_str(ring));
 642         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 643         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 644         seq_printf(m, "  CTL: 0x%08x\n", error->ctl[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 [last synced 0x%08x]\n",
 660                            error->semaphore_mboxes[ring][0],
 661                            error->semaphore_seqno[ring][0]);
 662                 seq_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
 663                            error->semaphore_mboxes[ring][1],
 664                            error->semaphore_seqno[ring][1]);
 665         }
 666         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 667         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
 668         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 669         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 670 }
 671
 672 struct i915_error_state_file_priv {
 673         struct drm_device *dev;
 674         struct drm_i915_error_state *error;
 675 };
 676
 677 static int i915_error_state(struct seq_file *m, void *unused)
 678 {
 679         struct i915_error_state_file_priv *error_priv = m->private;
 680         struct drm_device *dev = error_priv->dev;
 681         drm_i915_private_t *dev_priv = dev->dev_private;
 682         struct drm_i915_error_state *error = error_priv->error;
 683         struct intel_ring_buffer *ring;
 684         int i, j, page, offset, elt;
 685
 686         if (!error) {
 687                 seq_printf(m, "no error state collected\n");
 688                 return 0;
 689         }
 690
 691         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 692                    error->time.tv_usec);
 693         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 694         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 695         seq_printf(m, "IER: 0x%08x\n", error->ier);
 696         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 697         seq_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
 698         seq_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
 699         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
 700
 701         for (i = 0; i < dev_priv->num_fence_regs; i++)
 702                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 703
 704         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
 705                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
 706
 707         if (INTEL_INFO(dev)->gen >= 6) {
 708                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 709                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 710         }
 711
 712         if (INTEL_INFO(dev)->gen == 7)
 713                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 714
 715         for_each_ring(ring, dev_priv, i)
 716                 i915_ring_error_state(m, dev, error, i);
 717
 718         if (error->active_bo)
 719                 print_error_buffers(m, "Active",
 720                                     error->active_bo,
 721                                     error->active_bo_count);
 722
 723         if (error->pinned_bo)
 724                 print_error_buffers(m, "Pinned",
 725                                     error->pinned_bo,
 726                                     error->pinned_bo_count);
 727
 728         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 729                 struct drm_i915_error_object *obj;
 730
 731                 if ((obj = error->ring[i].batchbuffer)) {
 732                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 733                                    dev_priv->ring[i].name,
 734                                    obj->gtt_offset);
 735                         offset = 0;
 736                         for (page = 0; page < obj->page_count; page++) {
 737                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 738                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 739                                         offset += 4;
 740                                 }
 741                         }
 742                 }
 743
 744                 if (error->ring[i].num_requests) {
 745                         seq_printf(m, "%s --- %d requests\n",
 746                                    dev_priv->ring[i].name,
 747                                    error->ring[i].num_requests);
 748                         for (j = 0; j < error->ring[i].num_requests; j++) {
 749                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 750                                            error->ring[i].requests[j].seqno,
 751                                            error->ring[i].requests[j].jiffies,
 752                                            error->ring[i].requests[j].tail);
 753                         }
 754                 }
 755
 756                 if ((obj = error->ring[i].ringbuffer)) {
 757                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 758                                    dev_priv->ring[i].name,
 759                                    obj->gtt_offset);
 760                         offset = 0;
 761                         for (page = 0; page < obj->page_count; page++) {
 762                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 763                                         seq_printf(m, "%08x :  %08x\n",
 764                                                    offset,
 765                                                    obj->pages[page][elt]);
 766                                         offset += 4;
 767                                 }
 768                         }
 769                 }
 770         }
 771
 772         if (error->overlay)
 773                 intel_overlay_print_error_state(m, error->overlay);
 774
 775         if (error->display)
 776                 intel_display_print_error_state(m, dev, error->display);
 777
 778         return 0;
 779 }
 780
 781 static ssize_t
 782 i915_error_state_write(struct file *filp,
 783                        const char __user *ubuf,
 784                        size_t cnt,
 785                        loff_t *ppos)
 786 {
 787         struct seq_file *m = filp->private_data;
 788         struct i915_error_state_file_priv *error_priv = m->private;
 789         struct drm_device *dev = error_priv->dev;
 790         int ret;
 791
 792         DRM_DEBUG_DRIVER("Resetting error state\n");
 793
 794         ret = mutex_lock_interruptible(&dev->struct_mutex);
 795         if (ret)
 796                 return ret;
 797
 798         i915_destroy_error_state(dev);
 799         mutex_unlock(&dev->struct_mutex);
 800
 801         return cnt;
 802 }
 803
 804 static int i915_error_state_open(struct inode *inode, struct file *file)
 805 {
 806         struct drm_device *dev = inode->i_private;
 807         drm_i915_private_t *dev_priv = dev->dev_private;
 808         struct i915_error_state_file_priv *error_priv;
 809         unsigned long flags;
 810
 811         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 812         if (!error_priv)
 813                 return -ENOMEM;
 814
 815         error_priv->dev = dev;
 816
 817         spin_lock_irqsave(&dev_priv->error_lock, flags);
 818         error_priv->error = dev_priv->first_error;
 819         if (error_priv->error)
 820                 kref_get(&error_priv->error->ref);
 821         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 822
 823         return single_open(file, i915_error_state, error_priv);
 824 }
 825
 826 static int i915_error_state_release(struct inode *inode, struct file *file)
 827 {
 828         struct seq_file *m = file->private_data;
 829         struct i915_error_state_file_priv *error_priv = m->private;
 830
 831         if (error_priv->error)
 832                 kref_put(&error_priv->error->ref, i915_error_state_free);
 833         kfree(error_priv);
 834
 835         return single_release(inode, file);
 836 }
 837
 838 static const struct file_operations i915_error_state_fops = {
 839         .owner = THIS_MODULE,
 840         .open = i915_error_state_open,
 841         .read = seq_read,
 842         .write = i915_error_state_write,
 843         .llseek = default_llseek,
 844         .release = i915_error_state_release,
 845 };
 846
 847 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 848 {
 849         struct drm_info_node *node = (struct drm_info_node *) m->private;
 850         struct drm_device *dev = node->minor->dev;
 851         drm_i915_private_t *dev_priv = dev->dev_private;
 852         u16 crstanddelay;
 853         int ret;
 854
 855         ret = mutex_lock_interruptible(&dev->struct_mutex);
 856         if (ret)
 857                 return ret;
 858
 859         crstanddelay = I915_READ16(CRSTANDVID);
 860
 861         mutex_unlock(&dev->struct_mutex);
 862
 863         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 864
 865         return 0;
 866 }
 867
 868 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 869 {
 870         struct drm_info_node *node = (struct drm_info_node *) m->private;
 871         struct drm_device *dev = node->minor->dev;
 872         drm_i915_private_t *dev_priv = dev->dev_private;
 873         int ret;
 874
 875         if (IS_GEN5(dev)) {
 876                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 877                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 878
 879                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 880                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 881                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 882                            MEMSTAT_VID_SHIFT);
 883                 seq_printf(m, "Current P-state: %d\n",
 884                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 885         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 886                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 887                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 888                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 889                 u32 rpstat;
 890                 u32 rpupei, rpcurup, rpprevup;
 891                 u32 rpdownei, rpcurdown, rpprevdown;
 892                 int max_freq;
 893
 894                 /* RPSTAT1 is in the GT power well */
 895                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 896                 if (ret)
 897                         return ret;
 898
 899                 gen6_gt_force_wake_get(dev_priv);
 900
 901                 rpstat = I915_READ(GEN6_RPSTAT1);
 902                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 903                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 904                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 905                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 906                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 907                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 908
 909                 gen6_gt_force_wake_put(dev_priv);
 910                 mutex_unlock(&dev->struct_mutex);
 911
 912                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 913                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 914                 seq_printf(m, "Render p-state ratio: %d\n",
 915                            (gt_perf_status & 0xff00) >> 8);
 916                 seq_printf(m, "Render p-state VID: %d\n",
 917                            gt_perf_status & 0xff);
 918                 seq_printf(m, "Render p-state limit: %d\n",
 919                            rp_state_limits & 0xff);
 920                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 921                                                 GEN6_CAGF_SHIFT) * GT_FREQUENCY_MULTIPLIER);
 922                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 923                            GEN6_CURICONT_MASK);
 924                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 925                            GEN6_CURBSYTAVG_MASK);
 926                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 927                            GEN6_CURBSYTAVG_MASK);
 928                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 929                            GEN6_CURIAVG_MASK);
 930                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 931                            GEN6_CURBSYTAVG_MASK);
 932                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 933                            GEN6_CURBSYTAVG_MASK);
 934
 935                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 936                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 937                            max_freq * GT_FREQUENCY_MULTIPLIER);
 938
 939                 max_freq = (rp_state_cap & 0xff00) >> 8;
 940                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 941                            max_freq * GT_FREQUENCY_MULTIPLIER);
 942
 943                 max_freq = rp_state_cap & 0xff;
 944                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 945                            max_freq * GT_FREQUENCY_MULTIPLIER);
 946         } else {
 947                 seq_printf(m, "no P-state info available\n");
 948         }
 949
 950         return 0;
 951 }
 952
 953 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 954 {
 955         struct drm_info_node *node = (struct drm_info_node *) m->private;
 956         struct drm_device *dev = node->minor->dev;
 957         drm_i915_private_t *dev_priv = dev->dev_private;
 958         u32 delayfreq;
 959         int ret, i;
 960
 961         ret = mutex_lock_interruptible(&dev->struct_mutex);
 962         if (ret)
 963                 return ret;
 964
 965         for (i = 0; i < 16; i++) {
 966                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 967                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 968                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 969         }
 970
 971         mutex_unlock(&dev->struct_mutex);
 972
 973         return 0;
 974 }
 975
 976 static inline int MAP_TO_MV(int map)
 977 {
 978         return 1250 - (map * 25);
 979 }
 980
 981 static int i915_inttoext_table(struct seq_file *m, void *unused)
 982 {
 983         struct drm_info_node *node = (struct drm_info_node *) m->private;
 984         struct drm_device *dev = node->minor->dev;
 985         drm_i915_private_t *dev_priv = dev->dev_private;
 986         u32 inttoext;
 987         int ret, i;
 988
 989         ret = mutex_lock_interruptible(&dev->struct_mutex);
 990         if (ret)
 991                 return ret;
 992
 993         for (i = 1; i <= 32; i++) {
 994                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 995                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 996         }
 997
 998         mutex_unlock(&dev->struct_mutex);
 999
1000         return 0;
1001 }
1002
1003 static int ironlake_drpc_info(struct seq_file *m)
1004 {
1005         struct drm_info_node *node = (struct drm_info_node *) m->private;
1006         struct drm_device *dev = node->minor->dev;
1007         drm_i915_private_t *dev_priv = dev->dev_private;
1008         u32 rgvmodectl, rstdbyctl;
1009         u16 crstandvid;
1010         int ret;
1011
1012         ret = mutex_lock_interruptible(&dev->struct_mutex);
1013         if (ret)
1014                 return ret;
1015
1016         rgvmodectl = I915_READ(MEMMODECTL);
1017         rstdbyctl = I915_READ(RSTDBYCTL);
1018         crstandvid = I915_READ16(CRSTANDVID);
1019
1020         mutex_unlock(&dev->struct_mutex);
1021
1022         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1023                    "yes" : "no");
1024         seq_printf(m, "Boost freq: %d\n",
1025                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1026                    MEMMODE_BOOST_FREQ_SHIFT);
1027         seq_printf(m, "HW control enabled: %s\n",
1028                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1029         seq_printf(m, "SW control enabled: %s\n",
1030                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1031         seq_printf(m, "Gated voltage change: %s\n",
1032                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1033         seq_printf(m, "Starting frequency: P%d\n",
1034                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1035         seq_printf(m, "Max P-state: P%d\n",
1036                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1037         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1038         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1039         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1040         seq_printf(m, "Render standby enabled: %s\n",
1041                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1042         seq_printf(m, "Current RS state: ");
1043         switch (rstdbyctl & RSX_STATUS_MASK) {
1044         case RSX_STATUS_ON:
1045                 seq_printf(m, "on\n");
1046                 break;
1047         case RSX_STATUS_RC1:
1048                 seq_printf(m, "RC1\n");
1049                 break;
1050         case RSX_STATUS_RC1E:
1051                 seq_printf(m, "RC1E\n");
1052                 break;
1053         case RSX_STATUS_RS1:
1054                 seq_printf(m, "RS1\n");
1055                 break;
1056         case RSX_STATUS_RS2:
1057                 seq_printf(m, "RS2 (RC6)\n");
1058                 break;
1059         case RSX_STATUS_RS3:
1060                 seq_printf(m, "RC3 (RC6+)\n");
1061                 break;
1062         default:
1063                 seq_printf(m, "unknown\n");
1064                 break;
1065         }
1066
1067         return 0;
1068 }
1069
1070 static int gen6_drpc_info(struct seq_file *m)
1071 {
1072
1073         struct drm_info_node *node = (struct drm_info_node *) m->private;
1074         struct drm_device *dev = node->minor->dev;
1075         struct drm_i915_private *dev_priv = dev->dev_private;
1076         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1077         unsigned forcewake_count;
1078         int count=0, ret;
1079
1080
1081         ret = mutex_lock_interruptible(&dev->struct_mutex);
1082         if (ret)
1083                 return ret;
1084
1085         spin_lock_irq(&dev_priv->gt_lock);
1086         forcewake_count = dev_priv->forcewake_count;
1087         spin_unlock_irq(&dev_priv->gt_lock);
1088
1089         if (forcewake_count) {
1090                 seq_printf(m, "RC information inaccurate because somebody "
1091                               "holds a forcewake reference \n");
1092         } else {
1093                 /* NB: we cannot use forcewake, else we read the wrong values */
1094                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1095                         udelay(10);
1096                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1097         }
1098
1099         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1100         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1101
1102         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1103         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1104         mutex_unlock(&dev->struct_mutex);
1105         mutex_lock(&dev_priv->rps.hw_lock);
1106         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1107         mutex_unlock(&dev_priv->rps.hw_lock);
1108
1109         seq_printf(m, "Video Turbo Mode: %s\n",
1110                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1111         seq_printf(m, "HW control enabled: %s\n",
1112                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1113         seq_printf(m, "SW control enabled: %s\n",
1114                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1115                           GEN6_RP_MEDIA_SW_MODE));
1116         seq_printf(m, "RC1e Enabled: %s\n",
1117                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1118         seq_printf(m, "RC6 Enabled: %s\n",
1119                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1120         seq_printf(m, "Deep RC6 Enabled: %s\n",
1121                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1122         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1123                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1124         seq_printf(m, "Current RC state: ");
1125         switch (gt_core_status & GEN6_RCn_MASK) {
1126         case GEN6_RC0:
1127                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1128                         seq_printf(m, "Core Power Down\n");
1129                 else
1130                         seq_printf(m, "on\n");
1131                 break;
1132         case GEN6_RC3:
1133                 seq_printf(m, "RC3\n");
1134                 break;
1135         case GEN6_RC6:
1136                 seq_printf(m, "RC6\n");
1137                 break;
1138         case GEN6_RC7:
1139                 seq_printf(m, "RC7\n");
1140                 break;
1141         default:
1142                 seq_printf(m, "Unknown\n");
1143                 break;
1144         }
1145
1146         seq_printf(m, "Core Power Down: %s\n",
1147                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1148
1149         /* Not exactly sure what this is */
1150         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1151                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1152         seq_printf(m, "RC6 residency since boot: %u\n",
1153                    I915_READ(GEN6_GT_GFX_RC6));
1154         seq_printf(m, "RC6+ residency since boot: %u\n",
1155                    I915_READ(GEN6_GT_GFX_RC6p));
1156         seq_printf(m, "RC6++ residency since boot: %u\n",
1157                    I915_READ(GEN6_GT_GFX_RC6pp));
1158
1159         seq_printf(m, "RC6   voltage: %dmV\n",
1160                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1161         seq_printf(m, "RC6+  voltage: %dmV\n",
1162                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1163         seq_printf(m, "RC6++ voltage: %dmV\n",
1164                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1165         return 0;
1166 }
1167
1168 static int i915_drpc_info(struct seq_file *m, void *unused)
1169 {
1170         struct drm_info_node *node = (struct drm_info_node *) m->private;
1171         struct drm_device *dev = node->minor->dev;
1172
1173         if (IS_GEN6(dev) || IS_GEN7(dev))
1174                 return gen6_drpc_info(m);
1175         else
1176                 return ironlake_drpc_info(m);
1177 }
1178
1179 static int i915_fbc_status(struct seq_file *m, void *unused)
1180 {
1181         struct drm_info_node *node = (struct drm_info_node *) m->private;
1182         struct drm_device *dev = node->minor->dev;
1183         drm_i915_private_t *dev_priv = dev->dev_private;
1184
1185         if (!I915_HAS_FBC(dev)) {
1186                 seq_printf(m, "FBC unsupported on this chipset\n");
1187                 return 0;
1188         }
1189
1190         if (intel_fbc_enabled(dev)) {
1191                 seq_printf(m, "FBC enabled\n");
1192         } else {
1193                 seq_printf(m, "FBC disabled: ");
1194                 switch (dev_priv->no_fbc_reason) {
1195                 case FBC_NO_OUTPUT:
1196                         seq_printf(m, "no outputs");
1197                         break;
1198                 case FBC_STOLEN_TOO_SMALL:
1199                         seq_printf(m, "not enough stolen memory");
1200                         break;
1201                 case FBC_UNSUPPORTED_MODE:
1202                         seq_printf(m, "mode not supported");
1203                         break;
1204                 case FBC_MODE_TOO_LARGE:
1205                         seq_printf(m, "mode too large");
1206                         break;
1207                 case FBC_BAD_PLANE:
1208                         seq_printf(m, "FBC unsupported on plane");
1209                         break;
1210                 case FBC_NOT_TILED:
1211                         seq_printf(m, "scanout buffer not tiled");
1212                         break;
1213                 case FBC_MULTIPLE_PIPES:
1214                         seq_printf(m, "multiple pipes are enabled");
1215                         break;
1216                 case FBC_MODULE_PARAM:
1217                         seq_printf(m, "disabled per module param (default off)");
1218                         break;
1219                 default:
1220                         seq_printf(m, "unknown reason");
1221                 }
1222                 seq_printf(m, "\n");
1223         }
1224         return 0;
1225 }
1226
1227 static int i915_sr_status(struct seq_file *m, void *unused)
1228 {
1229         struct drm_info_node *node = (struct drm_info_node *) m->private;
1230         struct drm_device *dev = node->minor->dev;
1231         drm_i915_private_t *dev_priv = dev->dev_private;
1232         bool sr_enabled = false;
1233
1234         if (HAS_PCH_SPLIT(dev))
1235                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1236         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1237                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1238         else if (IS_I915GM(dev))
1239                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1240         else if (IS_PINEVIEW(dev))
1241                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1242
1243         seq_printf(m, "self-refresh: %s\n",
1244                    sr_enabled ? "enabled" : "disabled");
1245
1246         return 0;
1247 }
1248
1249 static int i915_emon_status(struct seq_file *m, void *unused)
1250 {
1251         struct drm_info_node *node = (struct drm_info_node *) m->private;
1252         struct drm_device *dev = node->minor->dev;
1253         drm_i915_private_t *dev_priv = dev->dev_private;
1254         unsigned long temp, chipset, gfx;
1255         int ret;
1256
1257         if (!IS_GEN5(dev))
1258                 return -ENODEV;
1259
1260         ret = mutex_lock_interruptible(&dev->struct_mutex);
1261         if (ret)
1262                 return ret;
1263
1264         temp = i915_mch_val(dev_priv);
1265         chipset = i915_chipset_val(dev_priv);
1266         gfx = i915_gfx_val(dev_priv);
1267         mutex_unlock(&dev->struct_mutex);
1268
1269         seq_printf(m, "GMCH temp: %ld\n", temp);
1270         seq_printf(m, "Chipset power: %ld\n", chipset);
1271         seq_printf(m, "GFX power: %ld\n", gfx);
1272         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1273
1274         return 0;
1275 }
1276
1277 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1278 {
1279         struct drm_info_node *node = (struct drm_info_node *) m->private;
1280         struct drm_device *dev = node->minor->dev;
1281         drm_i915_private_t *dev_priv = dev->dev_private;
1282         int ret;
1283         int gpu_freq, ia_freq;
1284
1285         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1286                 seq_printf(m, "unsupported on this chipset\n");
1287                 return 0;
1288         }
1289
1290         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1291         if (ret)
1292                 return ret;
1293
1294         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1295
1296         for (gpu_freq = dev_priv->rps.min_delay;
1297              gpu_freq <= dev_priv->rps.max_delay;
1298              gpu_freq++) {
1299                 ia_freq = gpu_freq;
1300                 sandybridge_pcode_read(dev_priv,
1301                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1302                                        &ia_freq);
1303                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1304         }
1305
1306         mutex_unlock(&dev_priv->rps.hw_lock);
1307
1308         return 0;
1309 }
1310
1311 static int i915_gfxec(struct seq_file *m, void *unused)
1312 {
1313         struct drm_info_node *node = (struct drm_info_node *) m->private;
1314         struct drm_device *dev = node->minor->dev;
1315         drm_i915_private_t *dev_priv = dev->dev_private;
1316         int ret;
1317
1318         ret = mutex_lock_interruptible(&dev->struct_mutex);
1319         if (ret)
1320                 return ret;
1321
1322         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1323
1324         mutex_unlock(&dev->struct_mutex);
1325
1326         return 0;
1327 }
1328
1329 static int i915_opregion(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         struct intel_opregion *opregion = &dev_priv->opregion;
1335         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1336         int ret;
1337
1338         if (data == NULL)
1339                 return -ENOMEM;
1340
1341         ret = mutex_lock_interruptible(&dev->struct_mutex);
1342         if (ret)
1343                 goto out;
1344
1345         if (opregion->header) {
1346                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1347                 seq_write(m, data, OPREGION_SIZE);
1348         }
1349
1350         mutex_unlock(&dev->struct_mutex);
1351
1352 out:
1353         kfree(data);
1354         return 0;
1355 }
1356
1357 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
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         struct intel_fbdev *ifbdev;
1363         struct intel_framebuffer *fb;
1364         int ret;
1365
1366         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1367         if (ret)
1368                 return ret;
1369
1370         ifbdev = dev_priv->fbdev;
1371         fb = to_intel_framebuffer(ifbdev->helper.fb);
1372
1373         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1374                    fb->base.width,
1375                    fb->base.height,
1376                    fb->base.depth,
1377                    fb->base.bits_per_pixel);
1378         describe_obj(m, fb->obj);
1379         seq_printf(m, "\n");
1380
1381         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1382                 if (&fb->base == ifbdev->helper.fb)
1383                         continue;
1384
1385                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1386                            fb->base.width,
1387                            fb->base.height,
1388                            fb->base.depth,
1389                            fb->base.bits_per_pixel);
1390                 describe_obj(m, fb->obj);
1391                 seq_printf(m, "\n");
1392         }
1393
1394         mutex_unlock(&dev->mode_config.mutex);
1395
1396         return 0;
1397 }
1398
1399 static int i915_context_status(struct seq_file *m, void *unused)
1400 {
1401         struct drm_info_node *node = (struct drm_info_node *) m->private;
1402         struct drm_device *dev = node->minor->dev;
1403         drm_i915_private_t *dev_priv = dev->dev_private;
1404         int ret;
1405
1406         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1407         if (ret)
1408                 return ret;
1409
1410         if (dev_priv->ips.pwrctx) {
1411                 seq_printf(m, "power context ");
1412                 describe_obj(m, dev_priv->ips.pwrctx);
1413                 seq_printf(m, "\n");
1414         }
1415
1416         if (dev_priv->ips.renderctx) {
1417                 seq_printf(m, "render context ");
1418                 describe_obj(m, dev_priv->ips.renderctx);
1419                 seq_printf(m, "\n");
1420         }
1421
1422         mutex_unlock(&dev->mode_config.mutex);
1423
1424         return 0;
1425 }
1426
1427 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1428 {
1429         struct drm_info_node *node = (struct drm_info_node *) m->private;
1430         struct drm_device *dev = node->minor->dev;
1431         struct drm_i915_private *dev_priv = dev->dev_private;
1432         unsigned forcewake_count;
1433
1434         spin_lock_irq(&dev_priv->gt_lock);
1435         forcewake_count = dev_priv->forcewake_count;
1436         spin_unlock_irq(&dev_priv->gt_lock);
1437
1438         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1439
1440         return 0;
1441 }
1442
1443 static const char *swizzle_string(unsigned swizzle)
1444 {
1445         switch(swizzle) {
1446         case I915_BIT_6_SWIZZLE_NONE:
1447                 return "none";
1448         case I915_BIT_6_SWIZZLE_9:
1449                 return "bit9";
1450         case I915_BIT_6_SWIZZLE_9_10:
1451                 return "bit9/bit10";
1452         case I915_BIT_6_SWIZZLE_9_11:
1453                 return "bit9/bit11";
1454         case I915_BIT_6_SWIZZLE_9_10_11:
1455                 return "bit9/bit10/bit11";
1456         case I915_BIT_6_SWIZZLE_9_17:
1457                 return "bit9/bit17";
1458         case I915_BIT_6_SWIZZLE_9_10_17:
1459                 return "bit9/bit10/bit17";
1460         case I915_BIT_6_SWIZZLE_UNKNOWN:
1461                 return "unknown";
1462         }
1463
1464         return "bug";
1465 }
1466
1467 static int i915_swizzle_info(struct seq_file *m, void *data)
1468 {
1469         struct drm_info_node *node = (struct drm_info_node *) m->private;
1470         struct drm_device *dev = node->minor->dev;
1471         struct drm_i915_private *dev_priv = dev->dev_private;
1472         int ret;
1473
1474         ret = mutex_lock_interruptible(&dev->struct_mutex);
1475         if (ret)
1476                 return ret;
1477
1478         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1479                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1480         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1481                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1482
1483         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1484                 seq_printf(m, "DDC = 0x%08x\n",
1485                            I915_READ(DCC));
1486                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1487                            I915_READ16(C0DRB3));
1488                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1489                            I915_READ16(C1DRB3));
1490         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1491                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1492                            I915_READ(MAD_DIMM_C0));
1493                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1494                            I915_READ(MAD_DIMM_C1));
1495                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1496                            I915_READ(MAD_DIMM_C2));
1497                 seq_printf(m, "TILECTL = 0x%08x\n",
1498                            I915_READ(TILECTL));
1499                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1500                            I915_READ(ARB_MODE));
1501                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1502                            I915_READ(DISP_ARB_CTL));
1503         }
1504         mutex_unlock(&dev->struct_mutex);
1505
1506         return 0;
1507 }
1508
1509 static int i915_ppgtt_info(struct seq_file *m, void *data)
1510 {
1511         struct drm_info_node *node = (struct drm_info_node *) m->private;
1512         struct drm_device *dev = node->minor->dev;
1513         struct drm_i915_private *dev_priv = dev->dev_private;
1514         struct intel_ring_buffer *ring;
1515         int i, ret;
1516
1517
1518         ret = mutex_lock_interruptible(&dev->struct_mutex);
1519         if (ret)
1520                 return ret;
1521         if (INTEL_INFO(dev)->gen == 6)
1522                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1523
1524         for_each_ring(ring, dev_priv, i) {
1525                 seq_printf(m, "%s\n", ring->name);
1526                 if (INTEL_INFO(dev)->gen == 7)
1527                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1528                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1529                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1530                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1531         }
1532         if (dev_priv->mm.aliasing_ppgtt) {
1533                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1534
1535                 seq_printf(m, "aliasing PPGTT:\n");
1536                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1537         }
1538         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1539         mutex_unlock(&dev->struct_mutex);
1540
1541         return 0;
1542 }
1543
1544 static int i915_dpio_info(struct seq_file *m, void *data)
1545 {
1546         struct drm_info_node *node = (struct drm_info_node *) m->private;
1547         struct drm_device *dev = node->minor->dev;
1548         struct drm_i915_private *dev_priv = dev->dev_private;
1549         int ret;
1550
1551
1552         if (!IS_VALLEYVIEW(dev)) {
1553                 seq_printf(m, "unsupported\n");
1554                 return 0;
1555         }
1556
1557         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1558         if (ret)
1559                 return ret;
1560
1561         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1562
1563         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1564                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1565         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1566                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1567
1568         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1569                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1570         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1571                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1572
1573         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1574                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1575         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1576                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1577
1578         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1579                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1580         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1581                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1582
1583         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1584                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1585
1586         mutex_unlock(&dev->mode_config.mutex);
1587
1588         return 0;
1589 }
1590
1591 static ssize_t
1592 i915_wedged_read(struct file *filp,
1593                  char __user *ubuf,
1594                  size_t max,
1595                  loff_t *ppos)
1596 {
1597         struct drm_device *dev = filp->private_data;
1598         drm_i915_private_t *dev_priv = dev->dev_private;
1599         char buf[80];
1600         int len;
1601
1602         len = snprintf(buf, sizeof(buf),
1603                        "wedged :  %d\n",
1604                        atomic_read(&dev_priv->mm.wedged));
1605
1606         if (len > sizeof(buf))
1607                 len = sizeof(buf);
1608
1609         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1610 }
1611
1612 static ssize_t
1613 i915_wedged_write(struct file *filp,
1614                   const char __user *ubuf,
1615                   size_t cnt,
1616                   loff_t *ppos)
1617 {
1618         struct drm_device *dev = filp->private_data;
1619         char buf[20];
1620         int val = 1;
1621
1622         if (cnt > 0) {
1623                 if (cnt > sizeof(buf) - 1)
1624                         return -EINVAL;
1625
1626                 if (copy_from_user(buf, ubuf, cnt))
1627                         return -EFAULT;
1628                 buf[cnt] = 0;
1629
1630                 val = simple_strtoul(buf, NULL, 0);
1631         }
1632
1633         DRM_INFO("Manually setting wedged to %d\n", val);
1634         i915_handle_error(dev, val);
1635
1636         return cnt;
1637 }
1638
1639 static const struct file_operations i915_wedged_fops = {
1640         .owner = THIS_MODULE,
1641         .open = simple_open,
1642         .read = i915_wedged_read,
1643         .write = i915_wedged_write,
1644         .llseek = default_llseek,
1645 };
1646
1647 static ssize_t
1648 i915_ring_stop_read(struct file *filp,
1649                     char __user *ubuf,
1650                     size_t max,
1651                     loff_t *ppos)
1652 {
1653         struct drm_device *dev = filp->private_data;
1654         drm_i915_private_t *dev_priv = dev->dev_private;
1655         char buf[20];
1656         int len;
1657
1658         len = snprintf(buf, sizeof(buf),
1659                        "0x%08x\n", dev_priv->stop_rings);
1660
1661         if (len > sizeof(buf))
1662                 len = sizeof(buf);
1663
1664         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1665 }
1666
1667 static ssize_t
1668 i915_ring_stop_write(struct file *filp,
1669                      const char __user *ubuf,
1670                      size_t cnt,
1671                      loff_t *ppos)
1672 {
1673         struct drm_device *dev = filp->private_data;
1674         struct drm_i915_private *dev_priv = dev->dev_private;
1675         char buf[20];
1676         int val = 0, ret;
1677
1678         if (cnt > 0) {
1679                 if (cnt > sizeof(buf) - 1)
1680                         return -EINVAL;
1681
1682                 if (copy_from_user(buf, ubuf, cnt))
1683                         return -EFAULT;
1684                 buf[cnt] = 0;
1685
1686                 val = simple_strtoul(buf, NULL, 0);
1687         }
1688
1689         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1690
1691         ret = mutex_lock_interruptible(&dev->struct_mutex);
1692         if (ret)
1693                 return ret;
1694
1695         dev_priv->stop_rings = val;
1696         mutex_unlock(&dev->struct_mutex);
1697
1698         return cnt;
1699 }
1700
1701 static const struct file_operations i915_ring_stop_fops = {
1702         .owner = THIS_MODULE,
1703         .open = simple_open,
1704         .read = i915_ring_stop_read,
1705         .write = i915_ring_stop_write,
1706         .llseek = default_llseek,
1707 };
1708
1709 static ssize_t
1710 i915_max_freq_read(struct file *filp,
1711                    char __user *ubuf,
1712                    size_t max,
1713                    loff_t *ppos)
1714 {
1715         struct drm_device *dev = filp->private_data;
1716         drm_i915_private_t *dev_priv = dev->dev_private;
1717         char buf[80];
1718         int len, ret;
1719
1720         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1721                 return -ENODEV;
1722
1723         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1724         if (ret)
1725                 return ret;
1726
1727         len = snprintf(buf, sizeof(buf),
1728                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1729         mutex_unlock(&dev_priv->rps.hw_lock);
1730
1731         if (len > sizeof(buf))
1732                 len = sizeof(buf);
1733
1734         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1735 }
1736
1737 static ssize_t
1738 i915_max_freq_write(struct file *filp,
1739                   const char __user *ubuf,
1740                   size_t cnt,
1741                   loff_t *ppos)
1742 {
1743         struct drm_device *dev = filp->private_data;
1744         struct drm_i915_private *dev_priv = dev->dev_private;
1745         char buf[20];
1746         int val = 1, ret;
1747
1748         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1749                 return -ENODEV;
1750
1751         if (cnt > 0) {
1752                 if (cnt > sizeof(buf) - 1)
1753                         return -EINVAL;
1754
1755                 if (copy_from_user(buf, ubuf, cnt))
1756                         return -EFAULT;
1757                 buf[cnt] = 0;
1758
1759                 val = simple_strtoul(buf, NULL, 0);
1760         }
1761
1762         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1763
1764         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1765         if (ret)
1766                 return ret;
1767
1768         /*
1769          * Turbo will still be enabled, but won't go above the set value.
1770          */
1771         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1772
1773         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1774         mutex_unlock(&dev_priv->rps.hw_lock);
1775
1776         return cnt;
1777 }
1778
1779 static const struct file_operations i915_max_freq_fops = {
1780         .owner = THIS_MODULE,
1781         .open = simple_open,
1782         .read = i915_max_freq_read,
1783         .write = i915_max_freq_write,
1784         .llseek = default_llseek,
1785 };
1786
1787 static ssize_t
1788 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1789                    loff_t *ppos)
1790 {
1791         struct drm_device *dev = filp->private_data;
1792         drm_i915_private_t *dev_priv = dev->dev_private;
1793         char buf[80];
1794         int len, ret;
1795
1796         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1797                 return -ENODEV;
1798
1799         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1800         if (ret)
1801                 return ret;
1802
1803         len = snprintf(buf, sizeof(buf),
1804                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1805         mutex_unlock(&dev_priv->rps.hw_lock);
1806
1807         if (len > sizeof(buf))
1808                 len = sizeof(buf);
1809
1810         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1811 }
1812
1813 static ssize_t
1814 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
1815                     loff_t *ppos)
1816 {
1817         struct drm_device *dev = filp->private_data;
1818         struct drm_i915_private *dev_priv = dev->dev_private;
1819         char buf[20];
1820         int val = 1, ret;
1821
1822         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1823                 return -ENODEV;
1824
1825         if (cnt > 0) {
1826                 if (cnt > sizeof(buf) - 1)
1827                         return -EINVAL;
1828
1829                 if (copy_from_user(buf, ubuf, cnt))
1830                         return -EFAULT;
1831                 buf[cnt] = 0;
1832
1833                 val = simple_strtoul(buf, NULL, 0);
1834         }
1835
1836         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
1837
1838         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1839         if (ret)
1840                 return ret;
1841
1842         /*
1843          * Turbo will still be enabled, but won't go below the set value.
1844          */
1845         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
1846
1847         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1848         mutex_unlock(&dev_priv->rps.hw_lock);
1849
1850         return cnt;
1851 }
1852
1853 static const struct file_operations i915_min_freq_fops = {
1854         .owner = THIS_MODULE,
1855         .open = simple_open,
1856         .read = i915_min_freq_read,
1857         .write = i915_min_freq_write,
1858         .llseek = default_llseek,
1859 };
1860
1861 static ssize_t
1862 i915_cache_sharing_read(struct file *filp,
1863                    char __user *ubuf,
1864                    size_t max,
1865                    loff_t *ppos)
1866 {
1867         struct drm_device *dev = filp->private_data;
1868         drm_i915_private_t *dev_priv = dev->dev_private;
1869         char buf[80];
1870         u32 snpcr;
1871         int len, ret;
1872
1873         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1874                 return -ENODEV;
1875
1876         ret = mutex_lock_interruptible(&dev->struct_mutex);
1877         if (ret)
1878                 return ret;
1879
1880         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1881         mutex_unlock(&dev_priv->dev->struct_mutex);
1882
1883         len = snprintf(buf, sizeof(buf),
1884                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1885                        GEN6_MBC_SNPCR_SHIFT);
1886
1887         if (len > sizeof(buf))
1888                 len = sizeof(buf);
1889
1890         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1891 }
1892
1893 static ssize_t
1894 i915_cache_sharing_write(struct file *filp,
1895                   const char __user *ubuf,
1896                   size_t cnt,
1897                   loff_t *ppos)
1898 {
1899         struct drm_device *dev = filp->private_data;
1900         struct drm_i915_private *dev_priv = dev->dev_private;
1901         char buf[20];
1902         u32 snpcr;
1903         int val = 1;
1904
1905         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1906                 return -ENODEV;
1907
1908         if (cnt > 0) {
1909                 if (cnt > sizeof(buf) - 1)
1910                         return -EINVAL;
1911
1912                 if (copy_from_user(buf, ubuf, cnt))
1913                         return -EFAULT;
1914                 buf[cnt] = 0;
1915
1916                 val = simple_strtoul(buf, NULL, 0);
1917         }
1918
1919         if (val < 0 || val > 3)
1920                 return -EINVAL;
1921
1922         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1923
1924         /* Update the cache sharing policy here as well */
1925         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1926         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1927         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1928         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1929
1930         return cnt;
1931 }
1932
1933 static const struct file_operations i915_cache_sharing_fops = {
1934         .owner = THIS_MODULE,
1935         .open = simple_open,
1936         .read = i915_cache_sharing_read,
1937         .write = i915_cache_sharing_write,
1938         .llseek = default_llseek,
1939 };
1940
1941 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1942  * allocated we need to hook into the minor for release. */
1943 static int
1944 drm_add_fake_info_node(struct drm_minor *minor,
1945                        struct dentry *ent,
1946                        const void *key)
1947 {
1948         struct drm_info_node *node;
1949
1950         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1951         if (node == NULL) {
1952                 debugfs_remove(ent);
1953                 return -ENOMEM;
1954         }
1955
1956         node->minor = minor;
1957         node->dent = ent;
1958         node->info_ent = (void *) key;
1959
1960         mutex_lock(&minor->debugfs_lock);
1961         list_add(&node->list, &minor->debugfs_list);
1962         mutex_unlock(&minor->debugfs_lock);
1963
1964         return 0;
1965 }
1966
1967 static int i915_forcewake_open(struct inode *inode, struct file *file)
1968 {
1969         struct drm_device *dev = inode->i_private;
1970         struct drm_i915_private *dev_priv = dev->dev_private;
1971
1972         if (INTEL_INFO(dev)->gen < 6)
1973                 return 0;
1974
1975         gen6_gt_force_wake_get(dev_priv);
1976
1977         return 0;
1978 }
1979
1980 static int i915_forcewake_release(struct inode *inode, struct file *file)
1981 {
1982         struct drm_device *dev = inode->i_private;
1983         struct drm_i915_private *dev_priv = dev->dev_private;
1984
1985         if (INTEL_INFO(dev)->gen < 6)
1986                 return 0;
1987
1988         gen6_gt_force_wake_put(dev_priv);
1989
1990         return 0;
1991 }
1992
1993 static const struct file_operations i915_forcewake_fops = {
1994         .owner = THIS_MODULE,
1995         .open = i915_forcewake_open,
1996         .release = i915_forcewake_release,
1997 };
1998
1999 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2000 {
2001         struct drm_device *dev = minor->dev;
2002         struct dentry *ent;
2003
2004         ent = debugfs_create_file("i915_forcewake_user",
2005                                   S_IRUSR,
2006                                   root, dev,
2007                                   &i915_forcewake_fops);
2008         if (IS_ERR(ent))
2009                 return PTR_ERR(ent);
2010
2011         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2012 }
2013
2014 static int i915_debugfs_create(struct dentry *root,
2015                                struct drm_minor *minor,
2016                                const char *name,
2017                                const struct file_operations *fops)
2018 {
2019         struct drm_device *dev = minor->dev;
2020         struct dentry *ent;
2021
2022         ent = debugfs_create_file(name,
2023                                   S_IRUGO | S_IWUSR,
2024                                   root, dev,
2025                                   fops);
2026         if (IS_ERR(ent))
2027                 return PTR_ERR(ent);
2028
2029         return drm_add_fake_info_node(minor, ent, fops);
2030 }
2031
2032 static struct drm_info_list i915_debugfs_list[] = {
2033         {"i915_capabilities", i915_capabilities, 0},
2034         {"i915_gem_objects", i915_gem_object_info, 0},
2035         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2036         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2037         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2038         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2039         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2040         {"i915_gem_request", i915_gem_request_info, 0},
2041         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2042         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2043         {"i915_gem_interrupt", i915_interrupt_info, 0},
2044         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2045         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2046         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2047         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2048         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2049         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2050         {"i915_inttoext_table", i915_inttoext_table, 0},
2051         {"i915_drpc_info", i915_drpc_info, 0},
2052         {"i915_emon_status", i915_emon_status, 0},
2053         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2054         {"i915_gfxec", i915_gfxec, 0},
2055         {"i915_fbc_status", i915_fbc_status, 0},
2056         {"i915_sr_status", i915_sr_status, 0},
2057         {"i915_opregion", i915_opregion, 0},
2058         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2059         {"i915_context_status", i915_context_status, 0},
2060         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2061         {"i915_swizzle_info", i915_swizzle_info, 0},
2062         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2063         {"i915_dpio", i915_dpio_info, 0},
2064 };
2065 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2066
2067 int i915_debugfs_init(struct drm_minor *minor)
2068 {
2069         int ret;
2070
2071         ret = i915_debugfs_create(minor->debugfs_root, minor,
2072                                   "i915_wedged",
2073                                   &i915_wedged_fops);
2074         if (ret)
2075                 return ret;
2076
2077         ret = i915_forcewake_create(minor->debugfs_root, minor);
2078         if (ret)
2079                 return ret;
2080
2081         ret = i915_debugfs_create(minor->debugfs_root, minor,
2082                                   "i915_max_freq",
2083                                   &i915_max_freq_fops);
2084         if (ret)
2085                 return ret;
2086
2087         ret = i915_debugfs_create(minor->debugfs_root, minor,
2088                                   "i915_min_freq",
2089                                   &i915_min_freq_fops);
2090         if (ret)
2091                 return ret;
2092
2093         ret = i915_debugfs_create(minor->debugfs_root, minor,
2094                                   "i915_cache_sharing",
2095                                   &i915_cache_sharing_fops);
2096         if (ret)
2097                 return ret;
2098
2099         ret = i915_debugfs_create(minor->debugfs_root, minor,
2100                                   "i915_ring_stop",
2101                                   &i915_ring_stop_fops);
2102         if (ret)
2103                 return ret;
2104
2105         ret = i915_debugfs_create(minor->debugfs_root, minor,
2106                                   "i915_error_state",
2107                                   &i915_error_state_fops);
2108         if (ret)
2109                 return ret;
2110
2111         return drm_debugfs_create_files(i915_debugfs_list,
2112                                         I915_DEBUGFS_ENTRIES,
2113                                         minor->debugfs_root, minor);
2114 }
2115
2116 void i915_debugfs_cleanup(struct drm_minor *minor)
2117 {
2118         drm_debugfs_remove_files(i915_debugfs_list,
2119                                  I915_DEBUGFS_ENTRIES, minor);
2120         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2121                                  1, minor);
2122         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2123                                  1, minor);
2124         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2125                                  1, minor);
2126         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2127                                  1, minor);
2128         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2129                                  1, minor);
2130         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2131                                  1, minor);
2132         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2133                                  1, minor);
2134 }
2135
2136 #endif /* CONFIG_DEBUG_FS */