drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include <linux/export.h>
  33 #include <generated/utsrelease.h>
  34 #include <drm/drmP.h>
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include <drm/i915_drm.h>
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         INACTIVE_LIST,
  48         PINNED_LIST,
  49 };
  50
  51 static const char *yesno(int v)
  52 {
  53         return v ? "yes" : "no";
  54 }
  55
  56 static int i915_capabilities(struct seq_file *m, void *data)
  57 {
  58         struct drm_info_node *node = (struct drm_info_node *) m->private;
  59         struct drm_device *dev = node->minor->dev;
  60         const struct intel_device_info *info = INTEL_INFO(dev);
  61
  62         seq_printf(m, "gen: %d\n", info->gen);
  63         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  64 #define DEV_INFO_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  65 #define DEV_INFO_SEP ;
  66         DEV_INFO_FLAGS;
  67 #undef DEV_INFO_FLAG
  68 #undef DEV_INFO_SEP
  69
  70         return 0;
  71 }
  72
  73 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  74 {
  75         if (obj->user_pin_count > 0)
  76                 return "P";
  77         else if (obj->pin_count > 0)
  78                 return "p";
  79         else
  80                 return " ";
  81 }
  82
  83 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
  84 {
  85         switch (obj->tiling_mode) {
  86         default:
  87         case I915_TILING_NONE: return " ";
  88         case I915_TILING_X: return "X";
  89         case I915_TILING_Y: return "Y";
  90         }
  91 }
  92
  93 static const char *cache_level_str(int type)
  94 {
  95         switch (type) {
  96         case I915_CACHE_NONE: return " uncached";
  97         case I915_CACHE_LLC: return " snooped (LLC)";
  98         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
  99         default: return "";
 100         }
 101 }
 102
 103 static void
 104 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 105 {
 106         seq_printf(m, "%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 (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
 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", atomic_read(&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, "  CTL: 0x%08x\n", error->ctl[ring]);
 646         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 647         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 648         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 649         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 650         if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
 651                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 652
 653         if (INTEL_INFO(dev)->gen >= 4)
 654                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 655         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 656         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 657         if (INTEL_INFO(dev)->gen >= 6) {
 658                 seq_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
 659                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 660                 seq_printf(m, "  SYNC_0: 0x%08x [last synced 0x%08x]\n",
 661                            error->semaphore_mboxes[ring][0],
 662                            error->semaphore_seqno[ring][0]);
 663                 seq_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
 664                            error->semaphore_mboxes[ring][1],
 665                            error->semaphore_seqno[ring][1]);
 666         }
 667         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 668         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
 669         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 670         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 671 }
 672
 673 struct i915_error_state_file_priv {
 674         struct drm_device *dev;
 675         struct drm_i915_error_state *error;
 676 };
 677
 678 static int i915_error_state(struct seq_file *m, void *unused)
 679 {
 680         struct i915_error_state_file_priv *error_priv = m->private;
 681         struct drm_device *dev = error_priv->dev;
 682         drm_i915_private_t *dev_priv = dev->dev_private;
 683         struct drm_i915_error_state *error = error_priv->error;
 684         struct intel_ring_buffer *ring;
 685         int i, j, page, offset, elt;
 686
 687         if (!error) {
 688                 seq_printf(m, "no error state collected\n");
 689                 return 0;
 690         }
 691
 692         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 693                    error->time.tv_usec);
 694         seq_printf(m, "Kernel: " UTS_RELEASE);
 695         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 696         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 697         seq_printf(m, "IER: 0x%08x\n", error->ier);
 698         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 699         seq_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
 700         seq_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
 701         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
 702
 703         for (i = 0; i < dev_priv->num_fence_regs; i++)
 704                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 705
 706         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
 707                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
 708
 709         if (INTEL_INFO(dev)->gen >= 6) {
 710                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 711                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 712         }
 713
 714         if (INTEL_INFO(dev)->gen == 7)
 715                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 716
 717         for_each_ring(ring, dev_priv, i)
 718                 i915_ring_error_state(m, dev, error, i);
 719
 720         if (error->active_bo)
 721                 print_error_buffers(m, "Active",
 722                                     error->active_bo,
 723                                     error->active_bo_count);
 724
 725         if (error->pinned_bo)
 726                 print_error_buffers(m, "Pinned",
 727                                     error->pinned_bo,
 728                                     error->pinned_bo_count);
 729
 730         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 731                 struct drm_i915_error_object *obj;
 732
 733                 if ((obj = error->ring[i].batchbuffer)) {
 734                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 735                                    dev_priv->ring[i].name,
 736                                    obj->gtt_offset);
 737                         offset = 0;
 738                         for (page = 0; page < obj->page_count; page++) {
 739                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 740                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 741                                         offset += 4;
 742                                 }
 743                         }
 744                 }
 745
 746                 if (error->ring[i].num_requests) {
 747                         seq_printf(m, "%s --- %d requests\n",
 748                                    dev_priv->ring[i].name,
 749                                    error->ring[i].num_requests);
 750                         for (j = 0; j < error->ring[i].num_requests; j++) {
 751                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 752                                            error->ring[i].requests[j].seqno,
 753                                            error->ring[i].requests[j].jiffies,
 754                                            error->ring[i].requests[j].tail);
 755                         }
 756                 }
 757
 758                 if ((obj = error->ring[i].ringbuffer)) {
 759                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 760                                    dev_priv->ring[i].name,
 761                                    obj->gtt_offset);
 762                         offset = 0;
 763                         for (page = 0; page < obj->page_count; page++) {
 764                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 765                                         seq_printf(m, "%08x :  %08x\n",
 766                                                    offset,
 767                                                    obj->pages[page][elt]);
 768                                         offset += 4;
 769                                 }
 770                         }
 771                 }
 772         }
 773
 774         if (error->overlay)
 775                 intel_overlay_print_error_state(m, error->overlay);
 776
 777         if (error->display)
 778                 intel_display_print_error_state(m, dev, error->display);
 779
 780         return 0;
 781 }
 782
 783 static ssize_t
 784 i915_error_state_write(struct file *filp,
 785                        const char __user *ubuf,
 786                        size_t cnt,
 787                        loff_t *ppos)
 788 {
 789         struct seq_file *m = filp->private_data;
 790         struct i915_error_state_file_priv *error_priv = m->private;
 791         struct drm_device *dev = error_priv->dev;
 792         int ret;
 793
 794         DRM_DEBUG_DRIVER("Resetting error state\n");
 795
 796         ret = mutex_lock_interruptible(&dev->struct_mutex);
 797         if (ret)
 798                 return ret;
 799
 800         i915_destroy_error_state(dev);
 801         mutex_unlock(&dev->struct_mutex);
 802
 803         return cnt;
 804 }
 805
 806 static int i915_error_state_open(struct inode *inode, struct file *file)
 807 {
 808         struct drm_device *dev = inode->i_private;
 809         drm_i915_private_t *dev_priv = dev->dev_private;
 810         struct i915_error_state_file_priv *error_priv;
 811         unsigned long flags;
 812
 813         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 814         if (!error_priv)
 815                 return -ENOMEM;
 816
 817         error_priv->dev = dev;
 818
 819         spin_lock_irqsave(&dev_priv->error_lock, flags);
 820         error_priv->error = dev_priv->first_error;
 821         if (error_priv->error)
 822                 kref_get(&error_priv->error->ref);
 823         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 824
 825         return single_open(file, i915_error_state, error_priv);
 826 }
 827
 828 static int i915_error_state_release(struct inode *inode, struct file *file)
 829 {
 830         struct seq_file *m = file->private_data;
 831         struct i915_error_state_file_priv *error_priv = m->private;
 832
 833         if (error_priv->error)
 834                 kref_put(&error_priv->error->ref, i915_error_state_free);
 835         kfree(error_priv);
 836
 837         return single_release(inode, file);
 838 }
 839
 840 static const struct file_operations i915_error_state_fops = {
 841         .owner = THIS_MODULE,
 842         .open = i915_error_state_open,
 843         .read = seq_read,
 844         .write = i915_error_state_write,
 845         .llseek = default_llseek,
 846         .release = i915_error_state_release,
 847 };
 848
 849 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 850 {
 851         struct drm_info_node *node = (struct drm_info_node *) m->private;
 852         struct drm_device *dev = node->minor->dev;
 853         drm_i915_private_t *dev_priv = dev->dev_private;
 854         u16 crstanddelay;
 855         int ret;
 856
 857         ret = mutex_lock_interruptible(&dev->struct_mutex);
 858         if (ret)
 859                 return ret;
 860
 861         crstanddelay = I915_READ16(CRSTANDVID);
 862
 863         mutex_unlock(&dev->struct_mutex);
 864
 865         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 866
 867         return 0;
 868 }
 869
 870 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 871 {
 872         struct drm_info_node *node = (struct drm_info_node *) m->private;
 873         struct drm_device *dev = node->minor->dev;
 874         drm_i915_private_t *dev_priv = dev->dev_private;
 875         int ret;
 876
 877         if (IS_GEN5(dev)) {
 878                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 879                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 880
 881                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 882                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 883                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 884                            MEMSTAT_VID_SHIFT);
 885                 seq_printf(m, "Current P-state: %d\n",
 886                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 887         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 888                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 889                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 890                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 891                 u32 rpstat;
 892                 u32 rpupei, rpcurup, rpprevup;
 893                 u32 rpdownei, rpcurdown, rpprevdown;
 894                 int max_freq;
 895
 896                 /* RPSTAT1 is in the GT power well */
 897                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 898                 if (ret)
 899                         return ret;
 900
 901                 gen6_gt_force_wake_get(dev_priv);
 902
 903                 rpstat = I915_READ(GEN6_RPSTAT1);
 904                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 905                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 906                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 907                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 908                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 909                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 910
 911                 gen6_gt_force_wake_put(dev_priv);
 912                 mutex_unlock(&dev->struct_mutex);
 913
 914                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 915                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 916                 seq_printf(m, "Render p-state ratio: %d\n",
 917                            (gt_perf_status & 0xff00) >> 8);
 918                 seq_printf(m, "Render p-state VID: %d\n",
 919                            gt_perf_status & 0xff);
 920                 seq_printf(m, "Render p-state limit: %d\n",
 921                            rp_state_limits & 0xff);
 922                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 923                                                 GEN6_CAGF_SHIFT) * GT_FREQUENCY_MULTIPLIER);
 924                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 925                            GEN6_CURICONT_MASK);
 926                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 927                            GEN6_CURBSYTAVG_MASK);
 928                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 929                            GEN6_CURBSYTAVG_MASK);
 930                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 931                            GEN6_CURIAVG_MASK);
 932                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 933                            GEN6_CURBSYTAVG_MASK);
 934                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 935                            GEN6_CURBSYTAVG_MASK);
 936
 937                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 938                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 939                            max_freq * GT_FREQUENCY_MULTIPLIER);
 940
 941                 max_freq = (rp_state_cap & 0xff00) >> 8;
 942                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 943                            max_freq * GT_FREQUENCY_MULTIPLIER);
 944
 945                 max_freq = rp_state_cap & 0xff;
 946                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 947                            max_freq * GT_FREQUENCY_MULTIPLIER);
 948         } else {
 949                 seq_printf(m, "no P-state info available\n");
 950         }
 951
 952         return 0;
 953 }
 954
 955 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 956 {
 957         struct drm_info_node *node = (struct drm_info_node *) m->private;
 958         struct drm_device *dev = node->minor->dev;
 959         drm_i915_private_t *dev_priv = dev->dev_private;
 960         u32 delayfreq;
 961         int ret, i;
 962
 963         ret = mutex_lock_interruptible(&dev->struct_mutex);
 964         if (ret)
 965                 return ret;
 966
 967         for (i = 0; i < 16; i++) {
 968                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 969                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 970                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 971         }
 972
 973         mutex_unlock(&dev->struct_mutex);
 974
 975         return 0;
 976 }
 977
 978 static inline int MAP_TO_MV(int map)
 979 {
 980         return 1250 - (map * 25);
 981 }
 982
 983 static int i915_inttoext_table(struct seq_file *m, void *unused)
 984 {
 985         struct drm_info_node *node = (struct drm_info_node *) m->private;
 986         struct drm_device *dev = node->minor->dev;
 987         drm_i915_private_t *dev_priv = dev->dev_private;
 988         u32 inttoext;
 989         int ret, i;
 990
 991         ret = mutex_lock_interruptible(&dev->struct_mutex);
 992         if (ret)
 993                 return ret;
 994
 995         for (i = 1; i <= 32; i++) {
 996                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 997                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 998         }
 999
1000         mutex_unlock(&dev->struct_mutex);
1001
1002         return 0;
1003 }
1004
1005 static int ironlake_drpc_info(struct seq_file *m)
1006 {
1007         struct drm_info_node *node = (struct drm_info_node *) m->private;
1008         struct drm_device *dev = node->minor->dev;
1009         drm_i915_private_t *dev_priv = dev->dev_private;
1010         u32 rgvmodectl, rstdbyctl;
1011         u16 crstandvid;
1012         int ret;
1013
1014         ret = mutex_lock_interruptible(&dev->struct_mutex);
1015         if (ret)
1016                 return ret;
1017
1018         rgvmodectl = I915_READ(MEMMODECTL);
1019         rstdbyctl = I915_READ(RSTDBYCTL);
1020         crstandvid = I915_READ16(CRSTANDVID);
1021
1022         mutex_unlock(&dev->struct_mutex);
1023
1024         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1025                    "yes" : "no");
1026         seq_printf(m, "Boost freq: %d\n",
1027                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1028                    MEMMODE_BOOST_FREQ_SHIFT);
1029         seq_printf(m, "HW control enabled: %s\n",
1030                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1031         seq_printf(m, "SW control enabled: %s\n",
1032                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1033         seq_printf(m, "Gated voltage change: %s\n",
1034                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1035         seq_printf(m, "Starting frequency: P%d\n",
1036                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1037         seq_printf(m, "Max P-state: P%d\n",
1038                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1039         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1040         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1041         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1042         seq_printf(m, "Render standby enabled: %s\n",
1043                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1044         seq_printf(m, "Current RS state: ");
1045         switch (rstdbyctl & RSX_STATUS_MASK) {
1046         case RSX_STATUS_ON:
1047                 seq_printf(m, "on\n");
1048                 break;
1049         case RSX_STATUS_RC1:
1050                 seq_printf(m, "RC1\n");
1051                 break;
1052         case RSX_STATUS_RC1E:
1053                 seq_printf(m, "RC1E\n");
1054                 break;
1055         case RSX_STATUS_RS1:
1056                 seq_printf(m, "RS1\n");
1057                 break;
1058         case RSX_STATUS_RS2:
1059                 seq_printf(m, "RS2 (RC6)\n");
1060                 break;
1061         case RSX_STATUS_RS3:
1062                 seq_printf(m, "RC3 (RC6+)\n");
1063                 break;
1064         default:
1065                 seq_printf(m, "unknown\n");
1066                 break;
1067         }
1068
1069         return 0;
1070 }
1071
1072 static int gen6_drpc_info(struct seq_file *m)
1073 {
1074
1075         struct drm_info_node *node = (struct drm_info_node *) m->private;
1076         struct drm_device *dev = node->minor->dev;
1077         struct drm_i915_private *dev_priv = dev->dev_private;
1078         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1079         unsigned forcewake_count;
1080         int count=0, ret;
1081
1082
1083         ret = mutex_lock_interruptible(&dev->struct_mutex);
1084         if (ret)
1085                 return ret;
1086
1087         spin_lock_irq(&dev_priv->gt_lock);
1088         forcewake_count = dev_priv->forcewake_count;
1089         spin_unlock_irq(&dev_priv->gt_lock);
1090
1091         if (forcewake_count) {
1092                 seq_printf(m, "RC information inaccurate because somebody "
1093                               "holds a forcewake reference \n");
1094         } else {
1095                 /* NB: we cannot use forcewake, else we read the wrong values */
1096                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1097                         udelay(10);
1098                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1099         }
1100
1101         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1102         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1103
1104         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1105         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1106         mutex_unlock(&dev->struct_mutex);
1107         mutex_lock(&dev_priv->rps.hw_lock);
1108         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1109         mutex_unlock(&dev_priv->rps.hw_lock);
1110
1111         seq_printf(m, "Video Turbo Mode: %s\n",
1112                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1113         seq_printf(m, "HW control enabled: %s\n",
1114                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1115         seq_printf(m, "SW control enabled: %s\n",
1116                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1117                           GEN6_RP_MEDIA_SW_MODE));
1118         seq_printf(m, "RC1e Enabled: %s\n",
1119                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1120         seq_printf(m, "RC6 Enabled: %s\n",
1121                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1122         seq_printf(m, "Deep RC6 Enabled: %s\n",
1123                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1124         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1125                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1126         seq_printf(m, "Current RC state: ");
1127         switch (gt_core_status & GEN6_RCn_MASK) {
1128         case GEN6_RC0:
1129                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1130                         seq_printf(m, "Core Power Down\n");
1131                 else
1132                         seq_printf(m, "on\n");
1133                 break;
1134         case GEN6_RC3:
1135                 seq_printf(m, "RC3\n");
1136                 break;
1137         case GEN6_RC6:
1138                 seq_printf(m, "RC6\n");
1139                 break;
1140         case GEN6_RC7:
1141                 seq_printf(m, "RC7\n");
1142                 break;
1143         default:
1144                 seq_printf(m, "Unknown\n");
1145                 break;
1146         }
1147
1148         seq_printf(m, "Core Power Down: %s\n",
1149                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1150
1151         /* Not exactly sure what this is */
1152         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1153                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1154         seq_printf(m, "RC6 residency since boot: %u\n",
1155                    I915_READ(GEN6_GT_GFX_RC6));
1156         seq_printf(m, "RC6+ residency since boot: %u\n",
1157                    I915_READ(GEN6_GT_GFX_RC6p));
1158         seq_printf(m, "RC6++ residency since boot: %u\n",
1159                    I915_READ(GEN6_GT_GFX_RC6pp));
1160
1161         seq_printf(m, "RC6   voltage: %dmV\n",
1162                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1163         seq_printf(m, "RC6+  voltage: %dmV\n",
1164                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1165         seq_printf(m, "RC6++ voltage: %dmV\n",
1166                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1167         return 0;
1168 }
1169
1170 static int i915_drpc_info(struct seq_file *m, void *unused)
1171 {
1172         struct drm_info_node *node = (struct drm_info_node *) m->private;
1173         struct drm_device *dev = node->minor->dev;
1174
1175         if (IS_GEN6(dev) || IS_GEN7(dev))
1176                 return gen6_drpc_info(m);
1177         else
1178                 return ironlake_drpc_info(m);
1179 }
1180
1181 static int i915_fbc_status(struct seq_file *m, void *unused)
1182 {
1183         struct drm_info_node *node = (struct drm_info_node *) m->private;
1184         struct drm_device *dev = node->minor->dev;
1185         drm_i915_private_t *dev_priv = dev->dev_private;
1186
1187         if (!I915_HAS_FBC(dev)) {
1188                 seq_printf(m, "FBC unsupported on this chipset\n");
1189                 return 0;
1190         }
1191
1192         if (intel_fbc_enabled(dev)) {
1193                 seq_printf(m, "FBC enabled\n");
1194         } else {
1195                 seq_printf(m, "FBC disabled: ");
1196                 switch (dev_priv->no_fbc_reason) {
1197                 case FBC_NO_OUTPUT:
1198                         seq_printf(m, "no outputs");
1199                         break;
1200                 case FBC_STOLEN_TOO_SMALL:
1201                         seq_printf(m, "not enough stolen memory");
1202                         break;
1203                 case FBC_UNSUPPORTED_MODE:
1204                         seq_printf(m, "mode not supported");
1205                         break;
1206                 case FBC_MODE_TOO_LARGE:
1207                         seq_printf(m, "mode too large");
1208                         break;
1209                 case FBC_BAD_PLANE:
1210                         seq_printf(m, "FBC unsupported on plane");
1211                         break;
1212                 case FBC_NOT_TILED:
1213                         seq_printf(m, "scanout buffer not tiled");
1214                         break;
1215                 case FBC_MULTIPLE_PIPES:
1216                         seq_printf(m, "multiple pipes are enabled");
1217                         break;
1218                 case FBC_MODULE_PARAM:
1219                         seq_printf(m, "disabled per module param (default off)");
1220                         break;
1221                 default:
1222                         seq_printf(m, "unknown reason");
1223                 }
1224                 seq_printf(m, "\n");
1225         }
1226         return 0;
1227 }
1228
1229 static int i915_sr_status(struct seq_file *m, void *unused)
1230 {
1231         struct drm_info_node *node = (struct drm_info_node *) m->private;
1232         struct drm_device *dev = node->minor->dev;
1233         drm_i915_private_t *dev_priv = dev->dev_private;
1234         bool sr_enabled = false;
1235
1236         if (HAS_PCH_SPLIT(dev))
1237                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1238         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1239                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1240         else if (IS_I915GM(dev))
1241                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1242         else if (IS_PINEVIEW(dev))
1243                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1244
1245         seq_printf(m, "self-refresh: %s\n",
1246                    sr_enabled ? "enabled" : "disabled");
1247
1248         return 0;
1249 }
1250
1251 static int i915_emon_status(struct seq_file *m, void *unused)
1252 {
1253         struct drm_info_node *node = (struct drm_info_node *) m->private;
1254         struct drm_device *dev = node->minor->dev;
1255         drm_i915_private_t *dev_priv = dev->dev_private;
1256         unsigned long temp, chipset, gfx;
1257         int ret;
1258
1259         if (!IS_GEN5(dev))
1260                 return -ENODEV;
1261
1262         ret = mutex_lock_interruptible(&dev->struct_mutex);
1263         if (ret)
1264                 return ret;
1265
1266         temp = i915_mch_val(dev_priv);
1267         chipset = i915_chipset_val(dev_priv);
1268         gfx = i915_gfx_val(dev_priv);
1269         mutex_unlock(&dev->struct_mutex);
1270
1271         seq_printf(m, "GMCH temp: %ld\n", temp);
1272         seq_printf(m, "Chipset power: %ld\n", chipset);
1273         seq_printf(m, "GFX power: %ld\n", gfx);
1274         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1275
1276         return 0;
1277 }
1278
1279 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1280 {
1281         struct drm_info_node *node = (struct drm_info_node *) m->private;
1282         struct drm_device *dev = node->minor->dev;
1283         drm_i915_private_t *dev_priv = dev->dev_private;
1284         int ret;
1285         int gpu_freq, ia_freq;
1286
1287         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1288                 seq_printf(m, "unsupported on this chipset\n");
1289                 return 0;
1290         }
1291
1292         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1293         if (ret)
1294                 return ret;
1295
1296         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1297
1298         for (gpu_freq = dev_priv->rps.min_delay;
1299              gpu_freq <= dev_priv->rps.max_delay;
1300              gpu_freq++) {
1301                 ia_freq = gpu_freq;
1302                 sandybridge_pcode_read(dev_priv,
1303                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1304                                        &ia_freq);
1305                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1306         }
1307
1308         mutex_unlock(&dev_priv->rps.hw_lock);
1309
1310         return 0;
1311 }
1312
1313 static int i915_gfxec(struct seq_file *m, void *unused)
1314 {
1315         struct drm_info_node *node = (struct drm_info_node *) m->private;
1316         struct drm_device *dev = node->minor->dev;
1317         drm_i915_private_t *dev_priv = dev->dev_private;
1318         int ret;
1319
1320         ret = mutex_lock_interruptible(&dev->struct_mutex);
1321         if (ret)
1322                 return ret;
1323
1324         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1325
1326         mutex_unlock(&dev->struct_mutex);
1327
1328         return 0;
1329 }
1330
1331 static int i915_opregion(struct seq_file *m, void *unused)
1332 {
1333         struct drm_info_node *node = (struct drm_info_node *) m->private;
1334         struct drm_device *dev = node->minor->dev;
1335         drm_i915_private_t *dev_priv = dev->dev_private;
1336         struct intel_opregion *opregion = &dev_priv->opregion;
1337         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1338         int ret;
1339
1340         if (data == NULL)
1341                 return -ENOMEM;
1342
1343         ret = mutex_lock_interruptible(&dev->struct_mutex);
1344         if (ret)
1345                 goto out;
1346
1347         if (opregion->header) {
1348                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1349                 seq_write(m, data, OPREGION_SIZE);
1350         }
1351
1352         mutex_unlock(&dev->struct_mutex);
1353
1354 out:
1355         kfree(data);
1356         return 0;
1357 }
1358
1359 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1360 {
1361         struct drm_info_node *node = (struct drm_info_node *) m->private;
1362         struct drm_device *dev = node->minor->dev;
1363         drm_i915_private_t *dev_priv = dev->dev_private;
1364         struct intel_fbdev *ifbdev;
1365         struct intel_framebuffer *fb;
1366         int ret;
1367
1368         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1369         if (ret)
1370                 return ret;
1371
1372         ifbdev = dev_priv->fbdev;
1373         fb = to_intel_framebuffer(ifbdev->helper.fb);
1374
1375         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1376                    fb->base.width,
1377                    fb->base.height,
1378                    fb->base.depth,
1379                    fb->base.bits_per_pixel);
1380         describe_obj(m, fb->obj);
1381         seq_printf(m, "\n");
1382
1383         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1384                 if (&fb->base == ifbdev->helper.fb)
1385                         continue;
1386
1387                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1388                            fb->base.width,
1389                            fb->base.height,
1390                            fb->base.depth,
1391                            fb->base.bits_per_pixel);
1392                 describe_obj(m, fb->obj);
1393                 seq_printf(m, "\n");
1394         }
1395
1396         mutex_unlock(&dev->mode_config.mutex);
1397
1398         return 0;
1399 }
1400
1401 static int i915_context_status(struct seq_file *m, void *unused)
1402 {
1403         struct drm_info_node *node = (struct drm_info_node *) m->private;
1404         struct drm_device *dev = node->minor->dev;
1405         drm_i915_private_t *dev_priv = dev->dev_private;
1406         int ret;
1407
1408         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1409         if (ret)
1410                 return ret;
1411
1412         if (dev_priv->ips.pwrctx) {
1413                 seq_printf(m, "power context ");
1414                 describe_obj(m, dev_priv->ips.pwrctx);
1415                 seq_printf(m, "\n");
1416         }
1417
1418         if (dev_priv->ips.renderctx) {
1419                 seq_printf(m, "render context ");
1420                 describe_obj(m, dev_priv->ips.renderctx);
1421                 seq_printf(m, "\n");
1422         }
1423
1424         mutex_unlock(&dev->mode_config.mutex);
1425
1426         return 0;
1427 }
1428
1429 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1430 {
1431         struct drm_info_node *node = (struct drm_info_node *) m->private;
1432         struct drm_device *dev = node->minor->dev;
1433         struct drm_i915_private *dev_priv = dev->dev_private;
1434         unsigned forcewake_count;
1435
1436         spin_lock_irq(&dev_priv->gt_lock);
1437         forcewake_count = dev_priv->forcewake_count;
1438         spin_unlock_irq(&dev_priv->gt_lock);
1439
1440         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1441
1442         return 0;
1443 }
1444
1445 static const char *swizzle_string(unsigned swizzle)
1446 {
1447         switch(swizzle) {
1448         case I915_BIT_6_SWIZZLE_NONE:
1449                 return "none";
1450         case I915_BIT_6_SWIZZLE_9:
1451                 return "bit9";
1452         case I915_BIT_6_SWIZZLE_9_10:
1453                 return "bit9/bit10";
1454         case I915_BIT_6_SWIZZLE_9_11:
1455                 return "bit9/bit11";
1456         case I915_BIT_6_SWIZZLE_9_10_11:
1457                 return "bit9/bit10/bit11";
1458         case I915_BIT_6_SWIZZLE_9_17:
1459                 return "bit9/bit17";
1460         case I915_BIT_6_SWIZZLE_9_10_17:
1461                 return "bit9/bit10/bit17";
1462         case I915_BIT_6_SWIZZLE_UNKNOWN:
1463                 return "unkown";
1464         }
1465
1466         return "bug";
1467 }
1468
1469 static int i915_swizzle_info(struct seq_file *m, void *data)
1470 {
1471         struct drm_info_node *node = (struct drm_info_node *) m->private;
1472         struct drm_device *dev = node->minor->dev;
1473         struct drm_i915_private *dev_priv = dev->dev_private;
1474         int ret;
1475
1476         ret = mutex_lock_interruptible(&dev->struct_mutex);
1477         if (ret)
1478                 return ret;
1479
1480         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1481                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1482         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1483                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1484
1485         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1486                 seq_printf(m, "DDC = 0x%08x\n",
1487                            I915_READ(DCC));
1488                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1489                            I915_READ16(C0DRB3));
1490                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1491                            I915_READ16(C1DRB3));
1492         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1493                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1494                            I915_READ(MAD_DIMM_C0));
1495                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1496                            I915_READ(MAD_DIMM_C1));
1497                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1498                            I915_READ(MAD_DIMM_C2));
1499                 seq_printf(m, "TILECTL = 0x%08x\n",
1500                            I915_READ(TILECTL));
1501                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1502                            I915_READ(ARB_MODE));
1503                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1504                            I915_READ(DISP_ARB_CTL));
1505         }
1506         mutex_unlock(&dev->struct_mutex);
1507
1508         return 0;
1509 }
1510
1511 static int i915_ppgtt_info(struct seq_file *m, void *data)
1512 {
1513         struct drm_info_node *node = (struct drm_info_node *) m->private;
1514         struct drm_device *dev = node->minor->dev;
1515         struct drm_i915_private *dev_priv = dev->dev_private;
1516         struct intel_ring_buffer *ring;
1517         int i, ret;
1518
1519
1520         ret = mutex_lock_interruptible(&dev->struct_mutex);
1521         if (ret)
1522                 return ret;
1523         if (INTEL_INFO(dev)->gen == 6)
1524                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1525
1526         for_each_ring(ring, dev_priv, i) {
1527                 seq_printf(m, "%s\n", ring->name);
1528                 if (INTEL_INFO(dev)->gen == 7)
1529                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1530                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1531                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1532                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1533         }
1534         if (dev_priv->mm.aliasing_ppgtt) {
1535                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1536
1537                 seq_printf(m, "aliasing PPGTT:\n");
1538                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1539         }
1540         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1541         mutex_unlock(&dev->struct_mutex);
1542
1543         return 0;
1544 }
1545
1546 static int i915_dpio_info(struct seq_file *m, void *data)
1547 {
1548         struct drm_info_node *node = (struct drm_info_node *) m->private;
1549         struct drm_device *dev = node->minor->dev;
1550         struct drm_i915_private *dev_priv = dev->dev_private;
1551         int ret;
1552
1553
1554         if (!IS_VALLEYVIEW(dev)) {
1555                 seq_printf(m, "unsupported\n");
1556                 return 0;
1557         }
1558
1559         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1560         if (ret)
1561                 return ret;
1562
1563         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1564
1565         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1566                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1567         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1568                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1569
1570         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1571                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1572         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1573                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1574
1575         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1576                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1577         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1578                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1579
1580         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1581                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1582         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1583                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1584
1585         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1586                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1587
1588         mutex_unlock(&dev->mode_config.mutex);
1589
1590         return 0;
1591 }
1592
1593 static ssize_t
1594 i915_wedged_read(struct file *filp,
1595                  char __user *ubuf,
1596                  size_t max,
1597                  loff_t *ppos)
1598 {
1599         struct drm_device *dev = filp->private_data;
1600         drm_i915_private_t *dev_priv = dev->dev_private;
1601         char buf[80];
1602         int len;
1603
1604         len = snprintf(buf, sizeof(buf),
1605                        "wedged :  %d\n",
1606                        atomic_read(&dev_priv->mm.wedged));
1607
1608         if (len > sizeof(buf))
1609                 len = sizeof(buf);
1610
1611         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1612 }
1613
1614 static ssize_t
1615 i915_wedged_write(struct file *filp,
1616                   const char __user *ubuf,
1617                   size_t cnt,
1618                   loff_t *ppos)
1619 {
1620         struct drm_device *dev = filp->private_data;
1621         char buf[20];
1622         int val = 1;
1623
1624         if (cnt > 0) {
1625                 if (cnt > sizeof(buf) - 1)
1626                         return -EINVAL;
1627
1628                 if (copy_from_user(buf, ubuf, cnt))
1629                         return -EFAULT;
1630                 buf[cnt] = 0;
1631
1632                 val = simple_strtoul(buf, NULL, 0);
1633         }
1634
1635         DRM_INFO("Manually setting wedged to %d\n", val);
1636         i915_handle_error(dev, val);
1637
1638         return cnt;
1639 }
1640
1641 static const struct file_operations i915_wedged_fops = {
1642         .owner = THIS_MODULE,
1643         .open = simple_open,
1644         .read = i915_wedged_read,
1645         .write = i915_wedged_write,
1646         .llseek = default_llseek,
1647 };
1648
1649 static ssize_t
1650 i915_ring_stop_read(struct file *filp,
1651                     char __user *ubuf,
1652                     size_t max,
1653                     loff_t *ppos)
1654 {
1655         struct drm_device *dev = filp->private_data;
1656         drm_i915_private_t *dev_priv = dev->dev_private;
1657         char buf[20];
1658         int len;
1659
1660         len = snprintf(buf, sizeof(buf),
1661                        "0x%08x\n", dev_priv->stop_rings);
1662
1663         if (len > sizeof(buf))
1664                 len = sizeof(buf);
1665
1666         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1667 }
1668
1669 static ssize_t
1670 i915_ring_stop_write(struct file *filp,
1671                      const char __user *ubuf,
1672                      size_t cnt,
1673                      loff_t *ppos)
1674 {
1675         struct drm_device *dev = filp->private_data;
1676         struct drm_i915_private *dev_priv = dev->dev_private;
1677         char buf[20];
1678         int val = 0, ret;
1679
1680         if (cnt > 0) {
1681                 if (cnt > sizeof(buf) - 1)
1682                         return -EINVAL;
1683
1684                 if (copy_from_user(buf, ubuf, cnt))
1685                         return -EFAULT;
1686                 buf[cnt] = 0;
1687
1688                 val = simple_strtoul(buf, NULL, 0);
1689         }
1690
1691         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1692
1693         ret = mutex_lock_interruptible(&dev->struct_mutex);
1694         if (ret)
1695                 return ret;
1696
1697         dev_priv->stop_rings = val;
1698         mutex_unlock(&dev->struct_mutex);
1699
1700         return cnt;
1701 }
1702
1703 static const struct file_operations i915_ring_stop_fops = {
1704         .owner = THIS_MODULE,
1705         .open = simple_open,
1706         .read = i915_ring_stop_read,
1707         .write = i915_ring_stop_write,
1708         .llseek = default_llseek,
1709 };
1710
1711 static ssize_t
1712 i915_max_freq_read(struct file *filp,
1713                    char __user *ubuf,
1714                    size_t max,
1715                    loff_t *ppos)
1716 {
1717         struct drm_device *dev = filp->private_data;
1718         drm_i915_private_t *dev_priv = dev->dev_private;
1719         char buf[80];
1720         int len, ret;
1721
1722         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1723                 return -ENODEV;
1724
1725         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1726         if (ret)
1727                 return ret;
1728
1729         len = snprintf(buf, sizeof(buf),
1730                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1731         mutex_unlock(&dev_priv->rps.hw_lock);
1732
1733         if (len > sizeof(buf))
1734                 len = sizeof(buf);
1735
1736         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1737 }
1738
1739 static ssize_t
1740 i915_max_freq_write(struct file *filp,
1741                   const char __user *ubuf,
1742                   size_t cnt,
1743                   loff_t *ppos)
1744 {
1745         struct drm_device *dev = filp->private_data;
1746         struct drm_i915_private *dev_priv = dev->dev_private;
1747         char buf[20];
1748         int val = 1, ret;
1749
1750         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1751                 return -ENODEV;
1752
1753         if (cnt > 0) {
1754                 if (cnt > sizeof(buf) - 1)
1755                         return -EINVAL;
1756
1757                 if (copy_from_user(buf, ubuf, cnt))
1758                         return -EFAULT;
1759                 buf[cnt] = 0;
1760
1761                 val = simple_strtoul(buf, NULL, 0);
1762         }
1763
1764         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1765
1766         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1767         if (ret)
1768                 return ret;
1769
1770         /*
1771          * Turbo will still be enabled, but won't go above the set value.
1772          */
1773         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1774
1775         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1776         mutex_unlock(&dev_priv->rps.hw_lock);
1777
1778         return cnt;
1779 }
1780
1781 static const struct file_operations i915_max_freq_fops = {
1782         .owner = THIS_MODULE,
1783         .open = simple_open,
1784         .read = i915_max_freq_read,
1785         .write = i915_max_freq_write,
1786         .llseek = default_llseek,
1787 };
1788
1789 static ssize_t
1790 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1791                    loff_t *ppos)
1792 {
1793         struct drm_device *dev = filp->private_data;
1794         drm_i915_private_t *dev_priv = dev->dev_private;
1795         char buf[80];
1796         int len, ret;
1797
1798         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1799                 return -ENODEV;
1800
1801         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1802         if (ret)
1803                 return ret;
1804
1805         len = snprintf(buf, sizeof(buf),
1806                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1807         mutex_unlock(&dev_priv->rps.hw_lock);
1808
1809         if (len > sizeof(buf))
1810                 len = sizeof(buf);
1811
1812         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1813 }
1814
1815 static ssize_t
1816 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
1817                     loff_t *ppos)
1818 {
1819         struct drm_device *dev = filp->private_data;
1820         struct drm_i915_private *dev_priv = dev->dev_private;
1821         char buf[20];
1822         int val = 1, ret;
1823
1824         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1825                 return -ENODEV;
1826
1827         if (cnt > 0) {
1828                 if (cnt > sizeof(buf) - 1)
1829                         return -EINVAL;
1830
1831                 if (copy_from_user(buf, ubuf, cnt))
1832                         return -EFAULT;
1833                 buf[cnt] = 0;
1834
1835                 val = simple_strtoul(buf, NULL, 0);
1836         }
1837
1838         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
1839
1840         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1841         if (ret)
1842                 return ret;
1843
1844         /*
1845          * Turbo will still be enabled, but won't go below the set value.
1846          */
1847         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
1848
1849         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1850         mutex_unlock(&dev_priv->rps.hw_lock);
1851
1852         return cnt;
1853 }
1854
1855 static const struct file_operations i915_min_freq_fops = {
1856         .owner = THIS_MODULE,
1857         .open = simple_open,
1858         .read = i915_min_freq_read,
1859         .write = i915_min_freq_write,
1860         .llseek = default_llseek,
1861 };
1862
1863 static ssize_t
1864 i915_cache_sharing_read(struct file *filp,
1865                    char __user *ubuf,
1866                    size_t max,
1867                    loff_t *ppos)
1868 {
1869         struct drm_device *dev = filp->private_data;
1870         drm_i915_private_t *dev_priv = dev->dev_private;
1871         char buf[80];
1872         u32 snpcr;
1873         int len, ret;
1874
1875         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1876                 return -ENODEV;
1877
1878         ret = mutex_lock_interruptible(&dev->struct_mutex);
1879         if (ret)
1880                 return ret;
1881
1882         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1883         mutex_unlock(&dev_priv->dev->struct_mutex);
1884
1885         len = snprintf(buf, sizeof(buf),
1886                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1887                        GEN6_MBC_SNPCR_SHIFT);
1888
1889         if (len > sizeof(buf))
1890                 len = sizeof(buf);
1891
1892         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1893 }
1894
1895 static ssize_t
1896 i915_cache_sharing_write(struct file *filp,
1897                   const char __user *ubuf,
1898                   size_t cnt,
1899                   loff_t *ppos)
1900 {
1901         struct drm_device *dev = filp->private_data;
1902         struct drm_i915_private *dev_priv = dev->dev_private;
1903         char buf[20];
1904         u32 snpcr;
1905         int val = 1;
1906
1907         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1908                 return -ENODEV;
1909
1910         if (cnt > 0) {
1911                 if (cnt > sizeof(buf) - 1)
1912                         return -EINVAL;
1913
1914                 if (copy_from_user(buf, ubuf, cnt))
1915                         return -EFAULT;
1916                 buf[cnt] = 0;
1917
1918                 val = simple_strtoul(buf, NULL, 0);
1919         }
1920
1921         if (val < 0 || val > 3)
1922                 return -EINVAL;
1923
1924         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1925
1926         /* Update the cache sharing policy here as well */
1927         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1928         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1929         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1930         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1931
1932         return cnt;
1933 }
1934
1935 static const struct file_operations i915_cache_sharing_fops = {
1936         .owner = THIS_MODULE,
1937         .open = simple_open,
1938         .read = i915_cache_sharing_read,
1939         .write = i915_cache_sharing_write,
1940         .llseek = default_llseek,
1941 };
1942
1943 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1944  * allocated we need to hook into the minor for release. */
1945 static int
1946 drm_add_fake_info_node(struct drm_minor *minor,
1947                        struct dentry *ent,
1948                        const void *key)
1949 {
1950         struct drm_info_node *node;
1951
1952         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1953         if (node == NULL) {
1954                 debugfs_remove(ent);
1955                 return -ENOMEM;
1956         }
1957
1958         node->minor = minor;
1959         node->dent = ent;
1960         node->info_ent = (void *) key;
1961
1962         mutex_lock(&minor->debugfs_lock);
1963         list_add(&node->list, &minor->debugfs_list);
1964         mutex_unlock(&minor->debugfs_lock);
1965
1966         return 0;
1967 }
1968
1969 static int i915_forcewake_open(struct inode *inode, struct file *file)
1970 {
1971         struct drm_device *dev = inode->i_private;
1972         struct drm_i915_private *dev_priv = dev->dev_private;
1973
1974         if (INTEL_INFO(dev)->gen < 6)
1975                 return 0;
1976
1977         gen6_gt_force_wake_get(dev_priv);
1978
1979         return 0;
1980 }
1981
1982 static int i915_forcewake_release(struct inode *inode, struct file *file)
1983 {
1984         struct drm_device *dev = inode->i_private;
1985         struct drm_i915_private *dev_priv = dev->dev_private;
1986
1987         if (INTEL_INFO(dev)->gen < 6)
1988                 return 0;
1989
1990         gen6_gt_force_wake_put(dev_priv);
1991
1992         return 0;
1993 }
1994
1995 static const struct file_operations i915_forcewake_fops = {
1996         .owner = THIS_MODULE,
1997         .open = i915_forcewake_open,
1998         .release = i915_forcewake_release,
1999 };
2000
2001 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2002 {
2003         struct drm_device *dev = minor->dev;
2004         struct dentry *ent;
2005
2006         ent = debugfs_create_file("i915_forcewake_user",
2007                                   S_IRUSR,
2008                                   root, dev,
2009                                   &i915_forcewake_fops);
2010         if (IS_ERR(ent))
2011                 return PTR_ERR(ent);
2012
2013         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2014 }
2015
2016 static int i915_debugfs_create(struct dentry *root,
2017                                struct drm_minor *minor,
2018                                const char *name,
2019                                const struct file_operations *fops)
2020 {
2021         struct drm_device *dev = minor->dev;
2022         struct dentry *ent;
2023
2024         ent = debugfs_create_file(name,
2025                                   S_IRUGO | S_IWUSR,
2026                                   root, dev,
2027                                   fops);
2028         if (IS_ERR(ent))
2029                 return PTR_ERR(ent);
2030
2031         return drm_add_fake_info_node(minor, ent, fops);
2032 }
2033
2034 static struct drm_info_list i915_debugfs_list[] = {
2035         {"i915_capabilities", i915_capabilities, 0},
2036         {"i915_gem_objects", i915_gem_object_info, 0},
2037         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2038         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2039         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2040         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2041         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2042         {"i915_gem_request", i915_gem_request_info, 0},
2043         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2044         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2045         {"i915_gem_interrupt", i915_interrupt_info, 0},
2046         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2047         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2048         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2049         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2050         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2051         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2052         {"i915_inttoext_table", i915_inttoext_table, 0},
2053         {"i915_drpc_info", i915_drpc_info, 0},
2054         {"i915_emon_status", i915_emon_status, 0},
2055         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2056         {"i915_gfxec", i915_gfxec, 0},
2057         {"i915_fbc_status", i915_fbc_status, 0},
2058         {"i915_sr_status", i915_sr_status, 0},
2059         {"i915_opregion", i915_opregion, 0},
2060         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2061         {"i915_context_status", i915_context_status, 0},
2062         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2063         {"i915_swizzle_info", i915_swizzle_info, 0},
2064         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2065         {"i915_dpio", i915_dpio_info, 0},
2066 };
2067 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2068
2069 int i915_debugfs_init(struct drm_minor *minor)
2070 {
2071         int ret;
2072
2073         ret = i915_debugfs_create(minor->debugfs_root, minor,
2074                                   "i915_wedged",
2075                                   &i915_wedged_fops);
2076         if (ret)
2077                 return ret;
2078
2079         ret = i915_forcewake_create(minor->debugfs_root, minor);
2080         if (ret)
2081                 return ret;
2082
2083         ret = i915_debugfs_create(minor->debugfs_root, minor,
2084                                   "i915_max_freq",
2085                                   &i915_max_freq_fops);
2086         if (ret)
2087                 return ret;
2088
2089         ret = i915_debugfs_create(minor->debugfs_root, minor,
2090                                   "i915_min_freq",
2091                                   &i915_min_freq_fops);
2092         if (ret)
2093                 return ret;
2094
2095         ret = i915_debugfs_create(minor->debugfs_root, minor,
2096                                   "i915_cache_sharing",
2097                                   &i915_cache_sharing_fops);
2098         if (ret)
2099                 return ret;
2100
2101         ret = i915_debugfs_create(minor->debugfs_root, minor,
2102                                   "i915_ring_stop",
2103                                   &i915_ring_stop_fops);
2104         if (ret)
2105                 return ret;
2106
2107         ret = i915_debugfs_create(minor->debugfs_root, minor,
2108                                   "i915_error_state",
2109                                   &i915_error_state_fops);
2110         if (ret)
2111                 return ret;
2112
2113         return drm_debugfs_create_files(i915_debugfs_list,
2114                                         I915_DEBUGFS_ENTRIES,
2115                                         minor->debugfs_root, minor);
2116 }
2117
2118 void i915_debugfs_cleanup(struct drm_minor *minor)
2119 {
2120         drm_debugfs_remove_files(i915_debugfs_list,
2121                                  I915_DEBUGFS_ENTRIES, minor);
2122         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2123                                  1, minor);
2124         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2125                                  1, minor);
2126         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2127                                  1, minor);
2128         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2129                                  1, minor);
2130         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2131                                  1, minor);
2132         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2133                                  1, minor);
2134         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2135                                  1, minor);
2136 }
2137
2138 #endif /* CONFIG_DEBUG_FS */