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 "drmP.h"
  34 #include "drm.h"
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         FLUSHING_LIST,
  48         INACTIVE_LIST,
  49         PINNED_LIST,
  50         DEFERRED_FREE_LIST,
  51 };
  52
  53 static const char *yesno(int v)
  54 {
  55         return v ? "yes" : "no";
  56 }
  57
  58 static int i915_capabilities(struct seq_file *m, void *data)
  59 {
  60         struct drm_info_node *node = (struct drm_info_node *) m->private;
  61         struct drm_device *dev = node->minor->dev;
  62         const struct intel_device_info *info = INTEL_INFO(dev);
  63
  64         seq_printf(m, "gen: %d\n", info->gen);
  65 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  66         B(is_mobile);
  67         B(is_i85x);
  68         B(is_i915g);
  69         B(is_i945gm);
  70         B(is_g33);
  71         B(need_gfx_hws);
  72         B(is_g4x);
  73         B(is_pineview);
  74         B(is_broadwater);
  75         B(is_crestline);
  76         B(has_fbc);
  77         B(has_pipe_cxsr);
  78         B(has_hotplug);
  79         B(cursor_needs_physical);
  80         B(has_overlay);
  81         B(overlay_needs_physical);
  82         B(supports_tv);
  83         B(has_bsd_ring);
  84         B(has_blt_ring);
  85 #undef B
  86
  87         return 0;
  88 }
  89
  90 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  91 {
  92         if (obj->user_pin_count > 0)
  93                 return "P";
  94         else if (obj->pin_count > 0)
  95                 return "p";
  96         else
  97                 return " ";
  98 }
  99
 100 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 101 {
 102         switch (obj->tiling_mode) {
 103         default:
 104         case I915_TILING_NONE: return " ";
 105         case I915_TILING_X: return "X";
 106         case I915_TILING_Y: return "Y";
 107         }
 108 }
 109
 110 static const char *cache_level_str(int type)
 111 {
 112         switch (type) {
 113         case I915_CACHE_NONE: return " uncached";
 114         case I915_CACHE_LLC: return " snooped (LLC)";
 115         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 116         default: return "";
 117         }
 118 }
 119
 120 static void
 121 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 122 {
 123         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
 124                    &obj->base,
 125                    get_pin_flag(obj),
 126                    get_tiling_flag(obj),
 127                    obj->base.size,
 128                    obj->base.read_domains,
 129                    obj->base.write_domain,
 130                    obj->last_rendering_seqno,
 131                    obj->last_fenced_seqno,
 132                    cache_level_str(obj->cache_level),
 133                    obj->dirty ? " dirty" : "",
 134                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 135         if (obj->base.name)
 136                 seq_printf(m, " (name: %d)", obj->base.name);
 137         if (obj->fence_reg != I915_FENCE_REG_NONE)
 138                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 139         if (obj->gtt_space != NULL)
 140                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 141                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 142         if (obj->pin_mappable || obj->fault_mappable) {
 143                 char s[3], *t = s;
 144                 if (obj->pin_mappable)
 145                         *t++ = 'p';
 146                 if (obj->fault_mappable)
 147                         *t++ = 'f';
 148                 *t = '\0';
 149                 seq_printf(m, " (%s mappable)", s);
 150         }
 151         if (obj->ring != NULL)
 152                 seq_printf(m, " (%s)", obj->ring->name);
 153 }
 154
 155 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 156 {
 157         struct drm_info_node *node = (struct drm_info_node *) m->private;
 158         uintptr_t list = (uintptr_t) node->info_ent->data;
 159         struct list_head *head;
 160         struct drm_device *dev = node->minor->dev;
 161         drm_i915_private_t *dev_priv = dev->dev_private;
 162         struct drm_i915_gem_object *obj;
 163         size_t total_obj_size, total_gtt_size;
 164         int count, ret;
 165
 166         ret = mutex_lock_interruptible(&dev->struct_mutex);
 167         if (ret)
 168                 return ret;
 169
 170         switch (list) {
 171         case ACTIVE_LIST:
 172                 seq_printf(m, "Active:\n");
 173                 head = &dev_priv->mm.active_list;
 174                 break;
 175         case INACTIVE_LIST:
 176                 seq_printf(m, "Inactive:\n");
 177                 head = &dev_priv->mm.inactive_list;
 178                 break;
 179         case PINNED_LIST:
 180                 seq_printf(m, "Pinned:\n");
 181                 head = &dev_priv->mm.pinned_list;
 182                 break;
 183         case FLUSHING_LIST:
 184                 seq_printf(m, "Flushing:\n");
 185                 head = &dev_priv->mm.flushing_list;
 186                 break;
 187         case DEFERRED_FREE_LIST:
 188                 seq_printf(m, "Deferred free:\n");
 189                 head = &dev_priv->mm.deferred_free_list;
 190                 break;
 191         default:
 192                 mutex_unlock(&dev->struct_mutex);
 193                 return -EINVAL;
 194         }
 195
 196         total_obj_size = total_gtt_size = count = 0;
 197         list_for_each_entry(obj, head, mm_list) {
 198                 seq_printf(m, "   ");
 199                 describe_obj(m, obj);
 200                 seq_printf(m, "\n");
 201                 total_obj_size += obj->base.size;
 202                 total_gtt_size += obj->gtt_space->size;
 203                 count++;
 204         }
 205         mutex_unlock(&dev->struct_mutex);
 206
 207         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 208                    count, total_obj_size, total_gtt_size);
 209         return 0;
 210 }
 211
 212 #define count_objects(list, member) do { \
 213         list_for_each_entry(obj, list, member) { \
 214                 size += obj->gtt_space->size; \
 215                 ++count; \
 216                 if (obj->map_and_fenceable) { \
 217                         mappable_size += obj->gtt_space->size; \
 218                         ++mappable_count; \
 219                 } \
 220         } \
 221 } while (0)
 222
 223 static int i915_gem_object_info(struct seq_file *m, void* data)
 224 {
 225         struct drm_info_node *node = (struct drm_info_node *) m->private;
 226         struct drm_device *dev = node->minor->dev;
 227         struct drm_i915_private *dev_priv = dev->dev_private;
 228         u32 count, mappable_count;
 229         size_t size, mappable_size;
 230         struct drm_i915_gem_object *obj;
 231         int ret;
 232
 233         ret = mutex_lock_interruptible(&dev->struct_mutex);
 234         if (ret)
 235                 return ret;
 236
 237         seq_printf(m, "%u objects, %zu bytes\n",
 238                    dev_priv->mm.object_count,
 239                    dev_priv->mm.object_memory);
 240
 241         size = count = mappable_size = mappable_count = 0;
 242         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 243         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 244                    count, mappable_count, size, mappable_size);
 245
 246         size = count = mappable_size = mappable_count = 0;
 247         count_objects(&dev_priv->mm.active_list, mm_list);
 248         count_objects(&dev_priv->mm.flushing_list, mm_list);
 249         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 250                    count, mappable_count, size, mappable_size);
 251
 252         size = count = mappable_size = mappable_count = 0;
 253         count_objects(&dev_priv->mm.pinned_list, mm_list);
 254         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 255                    count, mappable_count, size, mappable_size);
 256
 257         size = count = mappable_size = mappable_count = 0;
 258         count_objects(&dev_priv->mm.inactive_list, mm_list);
 259         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 260                    count, mappable_count, size, mappable_size);
 261
 262         size = count = mappable_size = mappable_count = 0;
 263         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 264         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 265                    count, mappable_count, size, mappable_size);
 266
 267         size = count = mappable_size = mappable_count = 0;
 268         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 269                 if (obj->fault_mappable) {
 270                         size += obj->gtt_space->size;
 271                         ++count;
 272                 }
 273                 if (obj->pin_mappable) {
 274                         mappable_size += obj->gtt_space->size;
 275                         ++mappable_count;
 276                 }
 277         }
 278         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 279                    mappable_count, mappable_size);
 280         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 281                    count, size);
 282
 283         seq_printf(m, "%zu [%zu] gtt total\n",
 284                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 285
 286         mutex_unlock(&dev->struct_mutex);
 287
 288         return 0;
 289 }
 290
 291 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 292 {
 293         struct drm_info_node *node = (struct drm_info_node *) m->private;
 294         struct drm_device *dev = node->minor->dev;
 295         struct drm_i915_private *dev_priv = dev->dev_private;
 296         struct drm_i915_gem_object *obj;
 297         size_t total_obj_size, total_gtt_size;
 298         int count, ret;
 299
 300         ret = mutex_lock_interruptible(&dev->struct_mutex);
 301         if (ret)
 302                 return ret;
 303
 304         total_obj_size = total_gtt_size = count = 0;
 305         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 306                 seq_printf(m, "   ");
 307                 describe_obj(m, obj);
 308                 seq_printf(m, "\n");
 309                 total_obj_size += obj->base.size;
 310                 total_gtt_size += obj->gtt_space->size;
 311                 count++;
 312         }
 313
 314         mutex_unlock(&dev->struct_mutex);
 315
 316         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 317                    count, total_obj_size, total_gtt_size);
 318
 319         return 0;
 320 }
 321
 322
 323 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 324 {
 325         struct drm_info_node *node = (struct drm_info_node *) m->private;
 326         struct drm_device *dev = node->minor->dev;
 327         unsigned long flags;
 328         struct intel_crtc *crtc;
 329
 330         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 331                 const char pipe = pipe_name(crtc->pipe);
 332                 const char plane = plane_name(crtc->plane);
 333                 struct intel_unpin_work *work;
 334
 335                 spin_lock_irqsave(&dev->event_lock, flags);
 336                 work = crtc->unpin_work;
 337                 if (work == NULL) {
 338                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 339                                    pipe, plane);
 340                 } else {
 341                         if (!work->pending) {
 342                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 343                                            pipe, plane);
 344                         } else {
 345                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 346                                            pipe, plane);
 347                         }
 348                         if (work->enable_stall_check)
 349                                 seq_printf(m, "Stall check enabled, ");
 350                         else
 351                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 352                         seq_printf(m, "%d prepares\n", work->pending);
 353
 354                         if (work->old_fb_obj) {
 355                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 356                                 if (obj)
 357                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 358                         }
 359                         if (work->pending_flip_obj) {
 360                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 361                                 if (obj)
 362                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 363                         }
 364                 }
 365                 spin_unlock_irqrestore(&dev->event_lock, flags);
 366         }
 367
 368         return 0;
 369 }
 370
 371 static int i915_gem_request_info(struct seq_file *m, void *data)
 372 {
 373         struct drm_info_node *node = (struct drm_info_node *) m->private;
 374         struct drm_device *dev = node->minor->dev;
 375         drm_i915_private_t *dev_priv = dev->dev_private;
 376         struct drm_i915_gem_request *gem_request;
 377         int ret, count;
 378
 379         ret = mutex_lock_interruptible(&dev->struct_mutex);
 380         if (ret)
 381                 return ret;
 382
 383         count = 0;
 384         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 385                 seq_printf(m, "Render requests:\n");
 386                 list_for_each_entry(gem_request,
 387                                     &dev_priv->ring[RCS].request_list,
 388                                     list) {
 389                         seq_printf(m, "    %d @ %d\n",
 390                                    gem_request->seqno,
 391                                    (int) (jiffies - gem_request->emitted_jiffies));
 392                 }
 393                 count++;
 394         }
 395         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 396                 seq_printf(m, "BSD requests:\n");
 397                 list_for_each_entry(gem_request,
 398                                     &dev_priv->ring[VCS].request_list,
 399                                     list) {
 400                         seq_printf(m, "    %d @ %d\n",
 401                                    gem_request->seqno,
 402                                    (int) (jiffies - gem_request->emitted_jiffies));
 403                 }
 404                 count++;
 405         }
 406         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 407                 seq_printf(m, "BLT requests:\n");
 408                 list_for_each_entry(gem_request,
 409                                     &dev_priv->ring[BCS].request_list,
 410                                     list) {
 411                         seq_printf(m, "    %d @ %d\n",
 412                                    gem_request->seqno,
 413                                    (int) (jiffies - gem_request->emitted_jiffies));
 414                 }
 415                 count++;
 416         }
 417         mutex_unlock(&dev->struct_mutex);
 418
 419         if (count == 0)
 420                 seq_printf(m, "No requests\n");
 421
 422         return 0;
 423 }
 424
 425 static void i915_ring_seqno_info(struct seq_file *m,
 426                                  struct intel_ring_buffer *ring)
 427 {
 428         if (ring->get_seqno) {
 429                 seq_printf(m, "Current sequence (%s): %d\n",
 430                            ring->name, ring->get_seqno(ring));
 431                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 432                            ring->name, ring->waiting_seqno);
 433                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 434                            ring->name, ring->irq_seqno);
 435         }
 436 }
 437
 438 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 439 {
 440         struct drm_info_node *node = (struct drm_info_node *) m->private;
 441         struct drm_device *dev = node->minor->dev;
 442         drm_i915_private_t *dev_priv = dev->dev_private;
 443         int ret, i;
 444
 445         ret = mutex_lock_interruptible(&dev->struct_mutex);
 446         if (ret)
 447                 return ret;
 448
 449         for (i = 0; i < I915_NUM_RINGS; i++)
 450                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 451
 452         mutex_unlock(&dev->struct_mutex);
 453
 454         return 0;
 455 }
 456
 457
 458 static int i915_interrupt_info(struct seq_file *m, void *data)
 459 {
 460         struct drm_info_node *node = (struct drm_info_node *) m->private;
 461         struct drm_device *dev = node->minor->dev;
 462         drm_i915_private_t *dev_priv = dev->dev_private;
 463         int ret, i, pipe;
 464
 465         ret = mutex_lock_interruptible(&dev->struct_mutex);
 466         if (ret)
 467                 return ret;
 468
 469         if (!HAS_PCH_SPLIT(dev)) {
 470                 seq_printf(m, "Interrupt enable:    %08x\n",
 471                            I915_READ(IER));
 472                 seq_printf(m, "Interrupt identity:  %08x\n",
 473                            I915_READ(IIR));
 474                 seq_printf(m, "Interrupt mask:      %08x\n",
 475                            I915_READ(IMR));
 476                 for_each_pipe(pipe)
 477                         seq_printf(m, "Pipe %c stat:         %08x\n",
 478                                    pipe_name(pipe),
 479                                    I915_READ(PIPESTAT(pipe)));
 480         } else {
 481                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 482                            I915_READ(DEIER));
 483                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 484                            I915_READ(DEIIR));
 485                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 486                            I915_READ(DEIMR));
 487                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 488                            I915_READ(SDEIER));
 489                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 490                            I915_READ(SDEIIR));
 491                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 492                            I915_READ(SDEIMR));
 493                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 494                            I915_READ(GTIER));
 495                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 496                            I915_READ(GTIIR));
 497                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 498                            I915_READ(GTIMR));
 499         }
 500         seq_printf(m, "Interrupts received: %d\n",
 501                    atomic_read(&dev_priv->irq_received));
 502         for (i = 0; i < I915_NUM_RINGS; i++) {
 503                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 504                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 505                                    dev_priv->ring[i].name,
 506                                    I915_READ_IMR(&dev_priv->ring[i]));
 507                 }
 508                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 509         }
 510         mutex_unlock(&dev->struct_mutex);
 511
 512         return 0;
 513 }
 514
 515 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 516 {
 517         struct drm_info_node *node = (struct drm_info_node *) m->private;
 518         struct drm_device *dev = node->minor->dev;
 519         drm_i915_private_t *dev_priv = dev->dev_private;
 520         int i, ret;
 521
 522         ret = mutex_lock_interruptible(&dev->struct_mutex);
 523         if (ret)
 524                 return ret;
 525
 526         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 527         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 528         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 529                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 530
 531                 seq_printf(m, "Fenced object[%2d] = ", i);
 532                 if (obj == NULL)
 533                         seq_printf(m, "unused");
 534                 else
 535                         describe_obj(m, obj);
 536                 seq_printf(m, "\n");
 537         }
 538
 539         mutex_unlock(&dev->struct_mutex);
 540         return 0;
 541 }
 542
 543 static int i915_hws_info(struct seq_file *m, void *data)
 544 {
 545         struct drm_info_node *node = (struct drm_info_node *) m->private;
 546         struct drm_device *dev = node->minor->dev;
 547         drm_i915_private_t *dev_priv = dev->dev_private;
 548         struct intel_ring_buffer *ring;
 549         const volatile u32 __iomem *hws;
 550         int i;
 551
 552         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 553         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 554         if (hws == NULL)
 555                 return 0;
 556
 557         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 558                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 559                            i * 4,
 560                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 561         }
 562         return 0;
 563 }
 564
 565 static void i915_dump_object(struct seq_file *m,
 566                              struct io_mapping *mapping,
 567                              struct drm_i915_gem_object *obj)
 568 {
 569         int page, page_count, i;
 570
 571         page_count = obj->base.size / PAGE_SIZE;
 572         for (page = 0; page < page_count; page++) {
 573                 u32 *mem = io_mapping_map_wc(mapping,
 574                                              obj->gtt_offset + page * PAGE_SIZE);
 575                 for (i = 0; i < PAGE_SIZE; i += 4)
 576                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 577                 io_mapping_unmap(mem);
 578         }
 579 }
 580
 581 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 582 {
 583         struct drm_info_node *node = (struct drm_info_node *) m->private;
 584         struct drm_device *dev = node->minor->dev;
 585         drm_i915_private_t *dev_priv = dev->dev_private;
 586         struct drm_i915_gem_object *obj;
 587         int ret;
 588
 589         ret = mutex_lock_interruptible(&dev->struct_mutex);
 590         if (ret)
 591                 return ret;
 592
 593         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
 594                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
 595                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 596                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
 597                 }
 598         }
 599
 600         mutex_unlock(&dev->struct_mutex);
 601         return 0;
 602 }
 603
 604 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 605 {
 606         struct drm_info_node *node = (struct drm_info_node *) m->private;
 607         struct drm_device *dev = node->minor->dev;
 608         drm_i915_private_t *dev_priv = dev->dev_private;
 609         struct intel_ring_buffer *ring;
 610         int ret;
 611
 612         ret = mutex_lock_interruptible(&dev->struct_mutex);
 613         if (ret)
 614                 return ret;
 615
 616         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 617         if (!ring->obj) {
 618                 seq_printf(m, "No ringbuffer setup\n");
 619         } else {
 620                 const u8 __iomem *virt = ring->virtual_start;
 621                 uint32_t off;
 622
 623                 for (off = 0; off < ring->size; off += 4) {
 624                         uint32_t *ptr = (uint32_t *)(virt + off);
 625                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 626                 }
 627         }
 628         mutex_unlock(&dev->struct_mutex);
 629
 630         return 0;
 631 }
 632
 633 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 634 {
 635         struct drm_info_node *node = (struct drm_info_node *) m->private;
 636         struct drm_device *dev = node->minor->dev;
 637         drm_i915_private_t *dev_priv = dev->dev_private;
 638         struct intel_ring_buffer *ring;
 639
 640         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 641         if (ring->size == 0)
 642                 return 0;
 643
 644         seq_printf(m, "Ring %s:\n", ring->name);
 645         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 646         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 647         seq_printf(m, "  Size :    %08x\n", ring->size);
 648         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 649         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 650         if (IS_GEN6(dev)) {
 651                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 652                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 653         }
 654         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 655         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 656
 657         return 0;
 658 }
 659
 660 static const char *ring_str(int ring)
 661 {
 662         switch (ring) {
 663         case RING_RENDER: return " render";
 664         case RING_BSD: return " bsd";
 665         case RING_BLT: return " blt";
 666         default: return "";
 667         }
 668 }
 669
 670 static const char *pin_flag(int pinned)
 671 {
 672         if (pinned > 0)
 673                 return " P";
 674         else if (pinned < 0)
 675                 return " p";
 676         else
 677                 return "";
 678 }
 679
 680 static const char *tiling_flag(int tiling)
 681 {
 682         switch (tiling) {
 683         default:
 684         case I915_TILING_NONE: return "";
 685         case I915_TILING_X: return " X";
 686         case I915_TILING_Y: return " Y";
 687         }
 688 }
 689
 690 static const char *dirty_flag(int dirty)
 691 {
 692         return dirty ? " dirty" : "";
 693 }
 694
 695 static const char *purgeable_flag(int purgeable)
 696 {
 697         return purgeable ? " purgeable" : "";
 698 }
 699
 700 static void print_error_buffers(struct seq_file *m,
 701                                 const char *name,
 702                                 struct drm_i915_error_buffer *err,
 703                                 int count)
 704 {
 705         seq_printf(m, "%s [%d]:\n", name, count);
 706
 707         while (count--) {
 708                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
 709                            err->gtt_offset,
 710                            err->size,
 711                            err->read_domains,
 712                            err->write_domain,
 713                            err->seqno,
 714                            pin_flag(err->pinned),
 715                            tiling_flag(err->tiling),
 716                            dirty_flag(err->dirty),
 717                            purgeable_flag(err->purgeable),
 718                            ring_str(err->ring),
 719                            cache_level_str(err->cache_level));
 720
 721                 if (err->name)
 722                         seq_printf(m, " (name: %d)", err->name);
 723                 if (err->fence_reg != I915_FENCE_REG_NONE)
 724                         seq_printf(m, " (fence: %d)", err->fence_reg);
 725
 726                 seq_printf(m, "\n");
 727                 err++;
 728         }
 729 }
 730
 731 static int i915_error_state(struct seq_file *m, void *unused)
 732 {
 733         struct drm_info_node *node = (struct drm_info_node *) m->private;
 734         struct drm_device *dev = node->minor->dev;
 735         drm_i915_private_t *dev_priv = dev->dev_private;
 736         struct drm_i915_error_state *error;
 737         unsigned long flags;
 738         int i, page, offset, elt;
 739
 740         spin_lock_irqsave(&dev_priv->error_lock, flags);
 741         if (!dev_priv->first_error) {
 742                 seq_printf(m, "no error state collected\n");
 743                 goto out;
 744         }
 745
 746         error = dev_priv->first_error;
 747
 748         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 749                    error->time.tv_usec);
 750         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 751         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 752         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 753         if (INTEL_INFO(dev)->gen >= 6) {
 754                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 755                 seq_printf(m, "Blitter command stream:\n");
 756                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
 757                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 758                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
 759                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 760                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
 761                 seq_printf(m, "Video (BSD) command stream:\n");
 762                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
 763                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
 764                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
 765                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
 766                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 767         }
 768         seq_printf(m, "Render command stream:\n");
 769         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 770         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 771         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 772         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 773         if (INTEL_INFO(dev)->gen >= 4) {
 774                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 775                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 776         }
 777         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 778         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
 779
 780         for (i = 0; i < dev_priv->num_fence_regs; i++)
 781                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 782
 783         if (error->active_bo)
 784                 print_error_buffers(m, "Active",
 785                                     error->active_bo,
 786                                     error->active_bo_count);
 787
 788         if (error->pinned_bo)
 789                 print_error_buffers(m, "Pinned",
 790                                     error->pinned_bo,
 791                                     error->pinned_bo_count);
 792
 793         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 794                 if (error->batchbuffer[i]) {
 795                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 796
 797                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 798                                    dev_priv->ring[i].name,
 799                                    obj->gtt_offset);
 800                         offset = 0;
 801                         for (page = 0; page < obj->page_count; page++) {
 802                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 803                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 804                                         offset += 4;
 805                                 }
 806                         }
 807                 }
 808         }
 809
 810         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
 811                 if (error->ringbuffer[i]) {
 812                         struct drm_i915_error_object *obj = error->ringbuffer[i];
 813                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 814                                    dev_priv->ring[i].name,
 815                                    obj->gtt_offset);
 816                         offset = 0;
 817                         for (page = 0; page < obj->page_count; page++) {
 818                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 819                                         seq_printf(m, "%08x :  %08x\n",
 820                                                    offset,
 821                                                    obj->pages[page][elt]);
 822                                         offset += 4;
 823                                 }
 824                         }
 825                 }
 826         }
 827
 828         if (error->overlay)
 829                 intel_overlay_print_error_state(m, error->overlay);
 830
 831         if (error->display)
 832                 intel_display_print_error_state(m, dev, error->display);
 833
 834 out:
 835         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 836
 837         return 0;
 838 }
 839
 840 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 841 {
 842         struct drm_info_node *node = (struct drm_info_node *) m->private;
 843         struct drm_device *dev = node->minor->dev;
 844         drm_i915_private_t *dev_priv = dev->dev_private;
 845         u16 crstanddelay = I915_READ16(CRSTANDVID);
 846
 847         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 848
 849         return 0;
 850 }
 851
 852 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 853 {
 854         struct drm_info_node *node = (struct drm_info_node *) m->private;
 855         struct drm_device *dev = node->minor->dev;
 856         drm_i915_private_t *dev_priv = dev->dev_private;
 857         int ret;
 858
 859         if (IS_GEN5(dev)) {
 860                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 861                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 862
 863                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 864                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 865                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 866                            MEMSTAT_VID_SHIFT);
 867                 seq_printf(m, "Current P-state: %d\n",
 868                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 869         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 870                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 871                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 872                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 873                 u32 rpstat;
 874                 u32 rpupei, rpcurup, rpprevup;
 875                 u32 rpdownei, rpcurdown, rpprevdown;
 876                 int max_freq;
 877
 878                 /* RPSTAT1 is in the GT power well */
 879                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 880                 if (ret)
 881                         return ret;
 882
 883                 gen6_gt_force_wake_get(dev_priv);
 884
 885                 rpstat = I915_READ(GEN6_RPSTAT1);
 886                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 887                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 888                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 889                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 890                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 891                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 892
 893                 gen6_gt_force_wake_put(dev_priv);
 894                 mutex_unlock(&dev->struct_mutex);
 895
 896                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 897                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 898                 seq_printf(m, "Render p-state ratio: %d\n",
 899                            (gt_perf_status & 0xff00) >> 8);
 900                 seq_printf(m, "Render p-state VID: %d\n",
 901                            gt_perf_status & 0xff);
 902                 seq_printf(m, "Render p-state limit: %d\n",
 903                            rp_state_limits & 0xff);
 904                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 905                                                 GEN6_CAGF_SHIFT) * 50);
 906                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 907                            GEN6_CURICONT_MASK);
 908                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 909                            GEN6_CURBSYTAVG_MASK);
 910                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 911                            GEN6_CURBSYTAVG_MASK);
 912                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 913                            GEN6_CURIAVG_MASK);
 914                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 915                            GEN6_CURBSYTAVG_MASK);
 916                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 917                            GEN6_CURBSYTAVG_MASK);
 918
 919                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 920                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 921                            max_freq * 50);
 922
 923                 max_freq = (rp_state_cap & 0xff00) >> 8;
 924                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 925                            max_freq * 50);
 926
 927                 max_freq = rp_state_cap & 0xff;
 928                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 929                            max_freq * 50);
 930         } else {
 931                 seq_printf(m, "no P-state info available\n");
 932         }
 933
 934         return 0;
 935 }
 936
 937 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 938 {
 939         struct drm_info_node *node = (struct drm_info_node *) m->private;
 940         struct drm_device *dev = node->minor->dev;
 941         drm_i915_private_t *dev_priv = dev->dev_private;
 942         u32 delayfreq;
 943         int i;
 944
 945         for (i = 0; i < 16; i++) {
 946                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 947                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 948                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 949         }
 950
 951         return 0;
 952 }
 953
 954 static inline int MAP_TO_MV(int map)
 955 {
 956         return 1250 - (map * 25);
 957 }
 958
 959 static int i915_inttoext_table(struct seq_file *m, void *unused)
 960 {
 961         struct drm_info_node *node = (struct drm_info_node *) m->private;
 962         struct drm_device *dev = node->minor->dev;
 963         drm_i915_private_t *dev_priv = dev->dev_private;
 964         u32 inttoext;
 965         int i;
 966
 967         for (i = 1; i <= 32; i++) {
 968                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 969                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 970         }
 971
 972         return 0;
 973 }
 974
 975 static int i915_drpc_info(struct seq_file *m, void *unused)
 976 {
 977         struct drm_info_node *node = (struct drm_info_node *) m->private;
 978         struct drm_device *dev = node->minor->dev;
 979         drm_i915_private_t *dev_priv = dev->dev_private;
 980         u32 rgvmodectl = I915_READ(MEMMODECTL);
 981         u32 rstdbyctl = I915_READ(RSTDBYCTL);
 982         u16 crstandvid = I915_READ16(CRSTANDVID);
 983
 984         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 985                    "yes" : "no");
 986         seq_printf(m, "Boost freq: %d\n",
 987                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 988                    MEMMODE_BOOST_FREQ_SHIFT);
 989         seq_printf(m, "HW control enabled: %s\n",
 990                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 991         seq_printf(m, "SW control enabled: %s\n",
 992                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 993         seq_printf(m, "Gated voltage change: %s\n",
 994                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 995         seq_printf(m, "Starting frequency: P%d\n",
 996                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 997         seq_printf(m, "Max P-state: P%d\n",
 998                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 999         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1000         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1001         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1002         seq_printf(m, "Render standby enabled: %s\n",
1003                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1004         seq_printf(m, "Current RS state: ");
1005         switch (rstdbyctl & RSX_STATUS_MASK) {
1006         case RSX_STATUS_ON:
1007                 seq_printf(m, "on\n");
1008                 break;
1009         case RSX_STATUS_RC1:
1010                 seq_printf(m, "RC1\n");
1011                 break;
1012         case RSX_STATUS_RC1E:
1013                 seq_printf(m, "RC1E\n");
1014                 break;
1015         case RSX_STATUS_RS1:
1016                 seq_printf(m, "RS1\n");
1017                 break;
1018         case RSX_STATUS_RS2:
1019                 seq_printf(m, "RS2 (RC6)\n");
1020                 break;
1021         case RSX_STATUS_RS3:
1022                 seq_printf(m, "RC3 (RC6+)\n");
1023                 break;
1024         default:
1025                 seq_printf(m, "unknown\n");
1026                 break;
1027         }
1028
1029         return 0;
1030 }
1031
1032 static int i915_fbc_status(struct seq_file *m, void *unused)
1033 {
1034         struct drm_info_node *node = (struct drm_info_node *) m->private;
1035         struct drm_device *dev = node->minor->dev;
1036         drm_i915_private_t *dev_priv = dev->dev_private;
1037
1038         if (!I915_HAS_FBC(dev)) {
1039                 seq_printf(m, "FBC unsupported on this chipset\n");
1040                 return 0;
1041         }
1042
1043         if (intel_fbc_enabled(dev)) {
1044                 seq_printf(m, "FBC enabled\n");
1045         } else {
1046                 seq_printf(m, "FBC disabled: ");
1047                 switch (dev_priv->no_fbc_reason) {
1048                 case FBC_NO_OUTPUT:
1049                         seq_printf(m, "no outputs");
1050                         break;
1051                 case FBC_STOLEN_TOO_SMALL:
1052                         seq_printf(m, "not enough stolen memory");
1053                         break;
1054                 case FBC_UNSUPPORTED_MODE:
1055                         seq_printf(m, "mode not supported");
1056                         break;
1057                 case FBC_MODE_TOO_LARGE:
1058                         seq_printf(m, "mode too large");
1059                         break;
1060                 case FBC_BAD_PLANE:
1061                         seq_printf(m, "FBC unsupported on plane");
1062                         break;
1063                 case FBC_NOT_TILED:
1064                         seq_printf(m, "scanout buffer not tiled");
1065                         break;
1066                 case FBC_MULTIPLE_PIPES:
1067                         seq_printf(m, "multiple pipes are enabled");
1068                         break;
1069                 case FBC_MODULE_PARAM:
1070                         seq_printf(m, "disabled per module param (default off)");
1071                         break;
1072                 default:
1073                         seq_printf(m, "unknown reason");
1074                 }
1075                 seq_printf(m, "\n");
1076         }
1077         return 0;
1078 }
1079
1080 static int i915_sr_status(struct seq_file *m, void *unused)
1081 {
1082         struct drm_info_node *node = (struct drm_info_node *) m->private;
1083         struct drm_device *dev = node->minor->dev;
1084         drm_i915_private_t *dev_priv = dev->dev_private;
1085         bool sr_enabled = false;
1086
1087         if (HAS_PCH_SPLIT(dev))
1088                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1089         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1090                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1091         else if (IS_I915GM(dev))
1092                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1093         else if (IS_PINEVIEW(dev))
1094                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1095
1096         seq_printf(m, "self-refresh: %s\n",
1097                    sr_enabled ? "enabled" : "disabled");
1098
1099         return 0;
1100 }
1101
1102 static int i915_emon_status(struct seq_file *m, void *unused)
1103 {
1104         struct drm_info_node *node = (struct drm_info_node *) m->private;
1105         struct drm_device *dev = node->minor->dev;
1106         drm_i915_private_t *dev_priv = dev->dev_private;
1107         unsigned long temp, chipset, gfx;
1108         int ret;
1109
1110         ret = mutex_lock_interruptible(&dev->struct_mutex);
1111         if (ret)
1112                 return ret;
1113
1114         temp = i915_mch_val(dev_priv);
1115         chipset = i915_chipset_val(dev_priv);
1116         gfx = i915_gfx_val(dev_priv);
1117         mutex_unlock(&dev->struct_mutex);
1118
1119         seq_printf(m, "GMCH temp: %ld\n", temp);
1120         seq_printf(m, "Chipset power: %ld\n", chipset);
1121         seq_printf(m, "GFX power: %ld\n", gfx);
1122         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1123
1124         return 0;
1125 }
1126
1127 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1128 {
1129         struct drm_info_node *node = (struct drm_info_node *) m->private;
1130         struct drm_device *dev = node->minor->dev;
1131         drm_i915_private_t *dev_priv = dev->dev_private;
1132         int ret;
1133         int gpu_freq, ia_freq;
1134
1135         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1136                 seq_printf(m, "unsupported on this chipset\n");
1137                 return 0;
1138         }
1139
1140         ret = mutex_lock_interruptible(&dev->struct_mutex);
1141         if (ret)
1142                 return ret;
1143
1144         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1145
1146         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1147              gpu_freq++) {
1148                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1149                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1150                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1151                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1152                               GEN6_PCODE_READY) == 0, 10)) {
1153                         DRM_ERROR("pcode read of freq table timed out\n");
1154                         continue;
1155                 }
1156                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1157                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1158         }
1159
1160         mutex_unlock(&dev->struct_mutex);
1161
1162         return 0;
1163 }
1164
1165 static int i915_gfxec(struct seq_file *m, void *unused)
1166 {
1167         struct drm_info_node *node = (struct drm_info_node *) m->private;
1168         struct drm_device *dev = node->minor->dev;
1169         drm_i915_private_t *dev_priv = dev->dev_private;
1170
1171         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1172
1173         return 0;
1174 }
1175
1176 static int i915_opregion(struct seq_file *m, void *unused)
1177 {
1178         struct drm_info_node *node = (struct drm_info_node *) m->private;
1179         struct drm_device *dev = node->minor->dev;
1180         drm_i915_private_t *dev_priv = dev->dev_private;
1181         struct intel_opregion *opregion = &dev_priv->opregion;
1182         int ret;
1183
1184         ret = mutex_lock_interruptible(&dev->struct_mutex);
1185         if (ret)
1186                 return ret;
1187
1188         if (opregion->header)
1189                 seq_write(m, opregion->header, OPREGION_SIZE);
1190
1191         mutex_unlock(&dev->struct_mutex);
1192
1193         return 0;
1194 }
1195
1196 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1197 {
1198         struct drm_info_node *node = (struct drm_info_node *) m->private;
1199         struct drm_device *dev = node->minor->dev;
1200         drm_i915_private_t *dev_priv = dev->dev_private;
1201         struct intel_fbdev *ifbdev;
1202         struct intel_framebuffer *fb;
1203         int ret;
1204
1205         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1206         if (ret)
1207                 return ret;
1208
1209         ifbdev = dev_priv->fbdev;
1210         fb = to_intel_framebuffer(ifbdev->helper.fb);
1211
1212         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1213                    fb->base.width,
1214                    fb->base.height,
1215                    fb->base.depth,
1216                    fb->base.bits_per_pixel);
1217         describe_obj(m, fb->obj);
1218         seq_printf(m, "\n");
1219
1220         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1221                 if (&fb->base == ifbdev->helper.fb)
1222                         continue;
1223
1224                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1225                            fb->base.width,
1226                            fb->base.height,
1227                            fb->base.depth,
1228                            fb->base.bits_per_pixel);
1229                 describe_obj(m, fb->obj);
1230                 seq_printf(m, "\n");
1231         }
1232
1233         mutex_unlock(&dev->mode_config.mutex);
1234
1235         return 0;
1236 }
1237
1238 static int i915_context_status(struct seq_file *m, void *unused)
1239 {
1240         struct drm_info_node *node = (struct drm_info_node *) m->private;
1241         struct drm_device *dev = node->minor->dev;
1242         drm_i915_private_t *dev_priv = dev->dev_private;
1243         int ret;
1244
1245         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1246         if (ret)
1247                 return ret;
1248
1249         if (dev_priv->pwrctx) {
1250                 seq_printf(m, "power context ");
1251                 describe_obj(m, dev_priv->pwrctx);
1252                 seq_printf(m, "\n");
1253         }
1254
1255         if (dev_priv->renderctx) {
1256                 seq_printf(m, "render context ");
1257                 describe_obj(m, dev_priv->renderctx);
1258                 seq_printf(m, "\n");
1259         }
1260
1261         mutex_unlock(&dev->mode_config.mutex);
1262
1263         return 0;
1264 }
1265
1266 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1267 {
1268         struct drm_info_node *node = (struct drm_info_node *) m->private;
1269         struct drm_device *dev = node->minor->dev;
1270         struct drm_i915_private *dev_priv = dev->dev_private;
1271
1272         seq_printf(m, "forcewake count = %d\n",
1273                    atomic_read(&dev_priv->forcewake_count));
1274
1275         return 0;
1276 }
1277
1278 static int
1279 i915_wedged_open(struct inode *inode,
1280                  struct file *filp)
1281 {
1282         filp->private_data = inode->i_private;
1283         return 0;
1284 }
1285
1286 static ssize_t
1287 i915_wedged_read(struct file *filp,
1288                  char __user *ubuf,
1289                  size_t max,
1290                  loff_t *ppos)
1291 {
1292         struct drm_device *dev = filp->private_data;
1293         drm_i915_private_t *dev_priv = dev->dev_private;
1294         char buf[80];
1295         int len;
1296
1297         len = snprintf(buf, sizeof(buf),
1298                        "wedged :  %d\n",
1299                        atomic_read(&dev_priv->mm.wedged));
1300
1301         if (len > sizeof(buf))
1302                 len = sizeof(buf);
1303
1304         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1305 }
1306
1307 static ssize_t
1308 i915_wedged_write(struct file *filp,
1309                   const char __user *ubuf,
1310                   size_t cnt,
1311                   loff_t *ppos)
1312 {
1313         struct drm_device *dev = filp->private_data;
1314         char buf[20];
1315         int val = 1;
1316
1317         if (cnt > 0) {
1318                 if (cnt > sizeof(buf) - 1)
1319                         return -EINVAL;
1320
1321                 if (copy_from_user(buf, ubuf, cnt))
1322                         return -EFAULT;
1323                 buf[cnt] = 0;
1324
1325                 val = simple_strtoul(buf, NULL, 0);
1326         }
1327
1328         DRM_INFO("Manually setting wedged to %d\n", val);
1329         i915_handle_error(dev, val);
1330
1331         return cnt;
1332 }
1333
1334 static const struct file_operations i915_wedged_fops = {
1335         .owner = THIS_MODULE,
1336         .open = i915_wedged_open,
1337         .read = i915_wedged_read,
1338         .write = i915_wedged_write,
1339         .llseek = default_llseek,
1340 };
1341
1342 static int
1343 i915_max_freq_open(struct inode *inode,
1344                    struct file *filp)
1345 {
1346         filp->private_data = inode->i_private;
1347         return 0;
1348 }
1349
1350 static ssize_t
1351 i915_max_freq_read(struct file *filp,
1352                    char __user *ubuf,
1353                    size_t max,
1354                    loff_t *ppos)
1355 {
1356         struct drm_device *dev = filp->private_data;
1357         drm_i915_private_t *dev_priv = dev->dev_private;
1358         char buf[80];
1359         int len;
1360
1361         len = snprintf(buf, sizeof(buf),
1362                        "max freq: %d\n", dev_priv->max_delay * 50);
1363
1364         if (len > sizeof(buf))
1365                 len = sizeof(buf);
1366
1367         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1368 }
1369
1370 static ssize_t
1371 i915_max_freq_write(struct file *filp,
1372                   const char __user *ubuf,
1373                   size_t cnt,
1374                   loff_t *ppos)
1375 {
1376         struct drm_device *dev = filp->private_data;
1377         struct drm_i915_private *dev_priv = dev->dev_private;
1378         char buf[20];
1379         int val = 1;
1380
1381         if (cnt > 0) {
1382                 if (cnt > sizeof(buf) - 1)
1383                         return -EINVAL;
1384
1385                 if (copy_from_user(buf, ubuf, cnt))
1386                         return -EFAULT;
1387                 buf[cnt] = 0;
1388
1389                 val = simple_strtoul(buf, NULL, 0);
1390         }
1391
1392         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1393
1394         /*
1395          * Turbo will still be enabled, but won't go above the set value.
1396          */
1397         dev_priv->max_delay = val / 50;
1398
1399         gen6_set_rps(dev, val / 50);
1400
1401         return cnt;
1402 }
1403
1404 static const struct file_operations i915_max_freq_fops = {
1405         .owner = THIS_MODULE,
1406         .open = i915_max_freq_open,
1407         .read = i915_max_freq_read,
1408         .write = i915_max_freq_write,
1409         .llseek = default_llseek,
1410 };
1411
1412 static int
1413 i915_cache_sharing_open(struct inode *inode,
1414                    struct file *filp)
1415 {
1416         filp->private_data = inode->i_private;
1417         return 0;
1418 }
1419
1420 static ssize_t
1421 i915_cache_sharing_read(struct file *filp,
1422                    char __user *ubuf,
1423                    size_t max,
1424                    loff_t *ppos)
1425 {
1426         struct drm_device *dev = filp->private_data;
1427         drm_i915_private_t *dev_priv = dev->dev_private;
1428         char buf[80];
1429         u32 snpcr;
1430         int len;
1431
1432         mutex_lock(&dev_priv->dev->struct_mutex);
1433         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1434         mutex_unlock(&dev_priv->dev->struct_mutex);
1435
1436         len = snprintf(buf, sizeof(buf),
1437                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1438                        GEN6_MBC_SNPCR_SHIFT);
1439
1440         if (len > sizeof(buf))
1441                 len = sizeof(buf);
1442
1443         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1444 }
1445
1446 static ssize_t
1447 i915_cache_sharing_write(struct file *filp,
1448                   const char __user *ubuf,
1449                   size_t cnt,
1450                   loff_t *ppos)
1451 {
1452         struct drm_device *dev = filp->private_data;
1453         struct drm_i915_private *dev_priv = dev->dev_private;
1454         char buf[20];
1455         u32 snpcr;
1456         int val = 1;
1457
1458         if (cnt > 0) {
1459                 if (cnt > sizeof(buf) - 1)
1460                         return -EINVAL;
1461
1462                 if (copy_from_user(buf, ubuf, cnt))
1463                         return -EFAULT;
1464                 buf[cnt] = 0;
1465
1466                 val = simple_strtoul(buf, NULL, 0);
1467         }
1468
1469         if (val < 0 || val > 3)
1470                 return -EINVAL;
1471
1472         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1473
1474         /* Update the cache sharing policy here as well */
1475         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1476         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1477         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1478         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1479
1480         return cnt;
1481 }
1482
1483 static const struct file_operations i915_cache_sharing_fops = {
1484         .owner = THIS_MODULE,
1485         .open = i915_cache_sharing_open,
1486         .read = i915_cache_sharing_read,
1487         .write = i915_cache_sharing_write,
1488         .llseek = default_llseek,
1489 };
1490
1491 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1492  * allocated we need to hook into the minor for release. */
1493 static int
1494 drm_add_fake_info_node(struct drm_minor *minor,
1495                        struct dentry *ent,
1496                        const void *key)
1497 {
1498         struct drm_info_node *node;
1499
1500         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1501         if (node == NULL) {
1502                 debugfs_remove(ent);
1503                 return -ENOMEM;
1504         }
1505
1506         node->minor = minor;
1507         node->dent = ent;
1508         node->info_ent = (void *) key;
1509
1510         mutex_lock(&minor->debugfs_lock);
1511         list_add(&node->list, &minor->debugfs_list);
1512         mutex_unlock(&minor->debugfs_lock);
1513
1514         return 0;
1515 }
1516
1517 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1518 {
1519         struct drm_device *dev = minor->dev;
1520         struct dentry *ent;
1521
1522         ent = debugfs_create_file("i915_wedged",
1523                                   S_IRUGO | S_IWUSR,
1524                                   root, dev,
1525                                   &i915_wedged_fops);
1526         if (IS_ERR(ent))
1527                 return PTR_ERR(ent);
1528
1529         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1530 }
1531
1532 static int i915_forcewake_open(struct inode *inode, struct file *file)
1533 {
1534         struct drm_device *dev = inode->i_private;
1535         struct drm_i915_private *dev_priv = dev->dev_private;
1536         int ret;
1537
1538         if (!IS_GEN6(dev))
1539                 return 0;
1540
1541         ret = mutex_lock_interruptible(&dev->struct_mutex);
1542         if (ret)
1543                 return ret;
1544         gen6_gt_force_wake_get(dev_priv);
1545         mutex_unlock(&dev->struct_mutex);
1546
1547         return 0;
1548 }
1549
1550 int i915_forcewake_release(struct inode *inode, struct file *file)
1551 {
1552         struct drm_device *dev = inode->i_private;
1553         struct drm_i915_private *dev_priv = dev->dev_private;
1554
1555         if (!IS_GEN6(dev))
1556                 return 0;
1557
1558         /*
1559          * It's bad that we can potentially hang userspace if struct_mutex gets
1560          * forever stuck.  However, if we cannot acquire this lock it means that
1561          * almost certainly the driver has hung, is not unload-able. Therefore
1562          * hanging here is probably a minor inconvenience not to be seen my
1563          * almost every user.
1564          */
1565         mutex_lock(&dev->struct_mutex);
1566         gen6_gt_force_wake_put(dev_priv);
1567         mutex_unlock(&dev->struct_mutex);
1568
1569         return 0;
1570 }
1571
1572 static const struct file_operations i915_forcewake_fops = {
1573         .owner = THIS_MODULE,
1574         .open = i915_forcewake_open,
1575         .release = i915_forcewake_release,
1576 };
1577
1578 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1579 {
1580         struct drm_device *dev = minor->dev;
1581         struct dentry *ent;
1582
1583         ent = debugfs_create_file("i915_forcewake_user",
1584                                   S_IRUSR,
1585                                   root, dev,
1586                                   &i915_forcewake_fops);
1587         if (IS_ERR(ent))
1588                 return PTR_ERR(ent);
1589
1590         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1591 }
1592
1593 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1594 {
1595         struct drm_device *dev = minor->dev;
1596         struct dentry *ent;
1597
1598         ent = debugfs_create_file("i915_max_freq",
1599                                   S_IRUGO | S_IWUSR,
1600                                   root, dev,
1601                                   &i915_max_freq_fops);
1602         if (IS_ERR(ent))
1603                 return PTR_ERR(ent);
1604
1605         return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1606 }
1607
1608 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1609 {
1610         struct drm_device *dev = minor->dev;
1611         struct dentry *ent;
1612
1613         ent = debugfs_create_file("i915_cache_sharing",
1614                                   S_IRUGO | S_IWUSR,
1615                                   root, dev,
1616                                   &i915_cache_sharing_fops);
1617         if (IS_ERR(ent))
1618                 return PTR_ERR(ent);
1619
1620         return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1621 }
1622
1623 static struct drm_info_list i915_debugfs_list[] = {
1624         {"i915_capabilities", i915_capabilities, 0},
1625         {"i915_gem_objects", i915_gem_object_info, 0},
1626         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1627         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1628         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1629         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1630         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1631         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1632         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1633         {"i915_gem_request", i915_gem_request_info, 0},
1634         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1635         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1636         {"i915_gem_interrupt", i915_interrupt_info, 0},
1637         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1638         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1639         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1640         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1641         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1642         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1643         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1644         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1645         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1646         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1647         {"i915_error_state", i915_error_state, 0},
1648         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1649         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1650         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1651         {"i915_inttoext_table", i915_inttoext_table, 0},
1652         {"i915_drpc_info", i915_drpc_info, 0},
1653         {"i915_emon_status", i915_emon_status, 0},
1654         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1655         {"i915_gfxec", i915_gfxec, 0},
1656         {"i915_fbc_status", i915_fbc_status, 0},
1657         {"i915_sr_status", i915_sr_status, 0},
1658         {"i915_opregion", i915_opregion, 0},
1659         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1660         {"i915_context_status", i915_context_status, 0},
1661         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1662 };
1663 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1664
1665 int i915_debugfs_init(struct drm_minor *minor)
1666 {
1667         int ret;
1668
1669         ret = i915_wedged_create(minor->debugfs_root, minor);
1670         if (ret)
1671                 return ret;
1672
1673         ret = i915_forcewake_create(minor->debugfs_root, minor);
1674         if (ret)
1675                 return ret;
1676         ret = i915_max_freq_create(minor->debugfs_root, minor);
1677         if (ret)
1678                 return ret;
1679         ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1680         if (ret)
1681                 return ret;
1682
1683         return drm_debugfs_create_files(i915_debugfs_list,
1684                                         I915_DEBUGFS_ENTRIES,
1685                                         minor->debugfs_root, minor);
1686 }
1687
1688 void i915_debugfs_cleanup(struct drm_minor *minor)
1689 {
1690         drm_debugfs_remove_files(i915_debugfs_list,
1691                                  I915_DEBUGFS_ENTRIES, minor);
1692         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1693                                  1, minor);
1694         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1695                                  1, minor);
1696         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1697                                  1, minor);
1698         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1699                                  1, minor);
1700 }
1701
1702 #endif /* CONFIG_DEBUG_FS */