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 "drmP.h"
  33 #include "drm.h"
  34 #include "i915_drm.h"
  35 #include "i915_drv.h"
  36
  37 #define DRM_I915_RING_DEBUG 1
  38
  39
  40 #if defined(CONFIG_DEBUG_FS)
  41
  42 #define ACTIVE_LIST     1
  43 #define FLUSHING_LIST   2
  44 #define INACTIVE_LIST   3
  45
  46 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  47 {
  48         if (obj_priv->user_pin_count > 0)
  49                 return "P";
  50         else if (obj_priv->pin_count > 0)
  51                 return "p";
  52         else
  53                 return " ";
  54 }
  55
  56 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
  57 {
  58     switch (obj_priv->tiling_mode) {
  59     default:
  60     case I915_TILING_NONE: return " ";
  61     case I915_TILING_X: return "X";
  62     case I915_TILING_Y: return "Y";
  63     }
  64 }
  65
  66 static int i915_gem_object_list_info(struct seq_file *m, void *data)
  67 {
  68         struct drm_info_node *node = (struct drm_info_node *) m->private;
  69         uintptr_t list = (uintptr_t) node->info_ent->data;
  70         struct list_head *head;
  71         struct drm_device *dev = node->minor->dev;
  72         drm_i915_private_t *dev_priv = dev->dev_private;
  73         struct drm_i915_gem_object *obj_priv;
  74         spinlock_t *lock = NULL;
  75
  76         switch (list) {
  77         case ACTIVE_LIST:
  78                 seq_printf(m, "Active:\n");
  79                 lock = &dev_priv->mm.active_list_lock;
  80                 head = &dev_priv->render_ring.active_list;
  81                 break;
  82         case INACTIVE_LIST:
  83                 seq_printf(m, "Inactive:\n");
  84                 head = &dev_priv->mm.inactive_list;
  85                 break;
  86         case FLUSHING_LIST:
  87                 seq_printf(m, "Flushing:\n");
  88                 head = &dev_priv->mm.flushing_list;
  89                 break;
  90         default:
  91                 DRM_INFO("Ooops, unexpected list\n");
  92                 return 0;
  93         }
  94
  95         if (lock)
  96                 spin_lock(lock);
  97         list_for_each_entry(obj_priv, head, list)
  98         {
  99                 seq_printf(m, "    %p: %s %8zd %08x %08x %d%s%s",
 100                            &obj_priv->base,
 101                            get_pin_flag(obj_priv),
 102                            obj_priv->base.size,
 103                            obj_priv->base.read_domains,
 104                            obj_priv->base.write_domain,
 105                            obj_priv->last_rendering_seqno,
 106                            obj_priv->dirty ? " dirty" : "",
 107                            obj_priv->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 108
 109                 if (obj_priv->base.name)
 110                         seq_printf(m, " (name: %d)", obj_priv->base.name);
 111                 if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
 112                         seq_printf(m, " (fence: %d)", obj_priv->fence_reg);
 113                 if (obj_priv->gtt_space != NULL)
 114                         seq_printf(m, " (gtt_offset: %08x)", obj_priv->gtt_offset);
 115
 116                 seq_printf(m, "\n");
 117         }
 118
 119         if (lock)
 120             spin_unlock(lock);
 121         return 0;
 122 }
 123
 124 static int i915_gem_request_info(struct seq_file *m, void *data)
 125 {
 126         struct drm_info_node *node = (struct drm_info_node *) m->private;
 127         struct drm_device *dev = node->minor->dev;
 128         drm_i915_private_t *dev_priv = dev->dev_private;
 129         struct drm_i915_gem_request *gem_request;
 130
 131         seq_printf(m, "Request:\n");
 132         list_for_each_entry(gem_request, &dev_priv->render_ring.request_list,
 133                         list) {
 134                 seq_printf(m, "    %d @ %d\n",
 135                            gem_request->seqno,
 136                            (int) (jiffies - gem_request->emitted_jiffies));
 137         }
 138         return 0;
 139 }
 140
 141 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 142 {
 143         struct drm_info_node *node = (struct drm_info_node *) m->private;
 144         struct drm_device *dev = node->minor->dev;
 145         drm_i915_private_t *dev_priv = dev->dev_private;
 146
 147         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 148                 seq_printf(m, "Current sequence: %d\n",
 149                            i915_get_gem_seqno(dev,  &dev_priv->render_ring));
 150         } else {
 151                 seq_printf(m, "Current sequence: hws uninitialized\n");
 152         }
 153         seq_printf(m, "Waiter sequence:  %d\n",
 154                         dev_priv->mm.waiting_gem_seqno);
 155         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 156         return 0;
 157 }
 158
 159
 160 static int i915_interrupt_info(struct seq_file *m, void *data)
 161 {
 162         struct drm_info_node *node = (struct drm_info_node *) m->private;
 163         struct drm_device *dev = node->minor->dev;
 164         drm_i915_private_t *dev_priv = dev->dev_private;
 165
 166         if (!HAS_PCH_SPLIT(dev)) {
 167                 seq_printf(m, "Interrupt enable:    %08x\n",
 168                            I915_READ(IER));
 169                 seq_printf(m, "Interrupt identity:  %08x\n",
 170                            I915_READ(IIR));
 171                 seq_printf(m, "Interrupt mask:      %08x\n",
 172                            I915_READ(IMR));
 173                 seq_printf(m, "Pipe A stat:         %08x\n",
 174                            I915_READ(PIPEASTAT));
 175                 seq_printf(m, "Pipe B stat:         %08x\n",
 176                            I915_READ(PIPEBSTAT));
 177         } else {
 178                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 179                            I915_READ(DEIER));
 180                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 181                            I915_READ(DEIIR));
 182                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 183                            I915_READ(DEIMR));
 184                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 185                            I915_READ(SDEIER));
 186                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 187                            I915_READ(SDEIIR));
 188                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 189                            I915_READ(SDEIMR));
 190                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 191                            I915_READ(GTIER));
 192                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 193                            I915_READ(GTIIR));
 194                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 195                            I915_READ(GTIMR));
 196         }
 197         seq_printf(m, "Interrupts received: %d\n",
 198                    atomic_read(&dev_priv->irq_received));
 199         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 200                 seq_printf(m, "Current sequence:    %d\n",
 201                            i915_get_gem_seqno(dev,  &dev_priv->render_ring));
 202         } else {
 203                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 204         }
 205         seq_printf(m, "Waiter sequence:     %d\n",
 206                    dev_priv->mm.waiting_gem_seqno);
 207         seq_printf(m, "IRQ sequence:        %d\n",
 208                    dev_priv->mm.irq_gem_seqno);
 209         return 0;
 210 }
 211
 212 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 213 {
 214         struct drm_info_node *node = (struct drm_info_node *) m->private;
 215         struct drm_device *dev = node->minor->dev;
 216         drm_i915_private_t *dev_priv = dev->dev_private;
 217         int i;
 218
 219         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 220         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 221         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 222                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 223
 224                 if (obj == NULL) {
 225                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 226                 } else {
 227                         struct drm_i915_gem_object *obj_priv;
 228
 229                         obj_priv = to_intel_bo(obj);
 230                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 231                                    "%08x %08zx %08x %s %08x %08x %d",
 232                                    i, obj, get_pin_flag(obj_priv),
 233                                    obj_priv->gtt_offset,
 234                                    obj->size, obj_priv->stride,
 235                                    get_tiling_flag(obj_priv),
 236                                    obj->read_domains, obj->write_domain,
 237                                    obj_priv->last_rendering_seqno);
 238                         if (obj->name)
 239                                 seq_printf(m, " (name: %d)", obj->name);
 240                         seq_printf(m, "\n");
 241                 }
 242         }
 243
 244         return 0;
 245 }
 246
 247 static int i915_hws_info(struct seq_file *m, void *data)
 248 {
 249         struct drm_info_node *node = (struct drm_info_node *) m->private;
 250         struct drm_device *dev = node->minor->dev;
 251         drm_i915_private_t *dev_priv = dev->dev_private;
 252         int i;
 253         volatile u32 *hws;
 254
 255         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 256         if (hws == NULL)
 257                 return 0;
 258
 259         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 260                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 261                            i * 4,
 262                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 263         }
 264         return 0;
 265 }
 266
 267 static void i915_dump_pages(struct seq_file *m, struct page **pages, int page_count)
 268 {
 269         int page, i;
 270         uint32_t *mem;
 271
 272         for (page = 0; page < page_count; page++) {
 273                 mem = kmap_atomic(pages[page], KM_USER0);
 274                 for (i = 0; i < PAGE_SIZE; i += 4)
 275                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 276                 kunmap_atomic(mem, KM_USER0);
 277         }
 278 }
 279
 280 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 281 {
 282         struct drm_info_node *node = (struct drm_info_node *) m->private;
 283         struct drm_device *dev = node->minor->dev;
 284         drm_i915_private_t *dev_priv = dev->dev_private;
 285         struct drm_gem_object *obj;
 286         struct drm_i915_gem_object *obj_priv;
 287         int ret;
 288
 289         spin_lock(&dev_priv->mm.active_list_lock);
 290
 291         list_for_each_entry(obj_priv, &dev_priv->render_ring.active_list,
 292                         list) {
 293                 obj = &obj_priv->base;
 294                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 295                     ret = i915_gem_object_get_pages(obj, 0);
 296                     if (ret) {
 297                             DRM_ERROR("Failed to get pages: %d\n", ret);
 298                             spin_unlock(&dev_priv->mm.active_list_lock);
 299                             return ret;
 300                     }
 301
 302                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj_priv->gtt_offset);
 303                     i915_dump_pages(m, obj_priv->pages, obj->size / PAGE_SIZE);
 304
 305                     i915_gem_object_put_pages(obj);
 306                 }
 307         }
 308
 309         spin_unlock(&dev_priv->mm.active_list_lock);
 310
 311         return 0;
 312 }
 313
 314 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 315 {
 316         struct drm_info_node *node = (struct drm_info_node *) m->private;
 317         struct drm_device *dev = node->minor->dev;
 318         drm_i915_private_t *dev_priv = dev->dev_private;
 319         u8 *virt;
 320         uint32_t *ptr, off;
 321
 322         if (!dev_priv->render_ring.gem_object) {
 323                 seq_printf(m, "No ringbuffer setup\n");
 324                 return 0;
 325         }
 326
 327         virt = dev_priv->render_ring.virtual_start;
 328
 329         for (off = 0; off < dev_priv->render_ring.size; off += 4) {
 330                 ptr = (uint32_t *)(virt + off);
 331                 seq_printf(m, "%08x :  %08x\n", off, *ptr);
 332         }
 333
 334         return 0;
 335 }
 336
 337 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 338 {
 339         struct drm_info_node *node = (struct drm_info_node *) m->private;
 340         struct drm_device *dev = node->minor->dev;
 341         drm_i915_private_t *dev_priv = dev->dev_private;
 342         unsigned int head, tail;
 343
 344         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 345         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 346
 347         seq_printf(m, "RingHead :  %08x\n", head);
 348         seq_printf(m, "RingTail :  %08x\n", tail);
 349         seq_printf(m, "RingSize :  %08lx\n", dev_priv->render_ring.size);
 350         seq_printf(m, "Acthd :     %08x\n", I915_READ(IS_I965G(dev) ? ACTHD_I965 : ACTHD));
 351
 352         return 0;
 353 }
 354
 355 static const char *pin_flag(int pinned)
 356 {
 357         if (pinned > 0)
 358                 return " P";
 359         else if (pinned < 0)
 360                 return " p";
 361         else
 362                 return "";
 363 }
 364
 365 static const char *tiling_flag(int tiling)
 366 {
 367         switch (tiling) {
 368         default:
 369         case I915_TILING_NONE: return "";
 370         case I915_TILING_X: return " X";
 371         case I915_TILING_Y: return " Y";
 372         }
 373 }
 374
 375 static const char *dirty_flag(int dirty)
 376 {
 377         return dirty ? " dirty" : "";
 378 }
 379
 380 static const char *purgeable_flag(int purgeable)
 381 {
 382         return purgeable ? " purgeable" : "";
 383 }
 384
 385 static int i915_error_state(struct seq_file *m, void *unused)
 386 {
 387         struct drm_info_node *node = (struct drm_info_node *) m->private;
 388         struct drm_device *dev = node->minor->dev;
 389         drm_i915_private_t *dev_priv = dev->dev_private;
 390         struct drm_i915_error_state *error;
 391         unsigned long flags;
 392         int i, page, offset, elt;
 393
 394         spin_lock_irqsave(&dev_priv->error_lock, flags);
 395         if (!dev_priv->first_error) {
 396                 seq_printf(m, "no error state collected\n");
 397                 goto out;
 398         }
 399
 400         error = dev_priv->first_error;
 401
 402         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 403                    error->time.tv_usec);
 404         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 405         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 406         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 407         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 408         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 409         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 410         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 411         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 412         if (IS_I965G(dev)) {
 413                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 414                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 415         }
 416         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 417
 418         if (error->active_bo_count) {
 419                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 420
 421                 for (i = 0; i < error->active_bo_count; i++) {
 422                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 423                                    error->active_bo[i].gtt_offset,
 424                                    error->active_bo[i].size,
 425                                    error->active_bo[i].read_domains,
 426                                    error->active_bo[i].write_domain,
 427                                    error->active_bo[i].seqno,
 428                                    pin_flag(error->active_bo[i].pinned),
 429                                    tiling_flag(error->active_bo[i].tiling),
 430                                    dirty_flag(error->active_bo[i].dirty),
 431                                    purgeable_flag(error->active_bo[i].purgeable));
 432
 433                         if (error->active_bo[i].name)
 434                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 435                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 436                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 437
 438                         seq_printf(m, "\n");
 439                 }
 440         }
 441
 442         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 443                 if (error->batchbuffer[i]) {
 444                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 445
 446                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 447                         offset = 0;
 448                         for (page = 0; page < obj->page_count; page++) {
 449                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 450                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 451                                         offset += 4;
 452                                 }
 453                         }
 454                 }
 455         }
 456
 457         if (error->ringbuffer) {
 458                 struct drm_i915_error_object *obj = error->ringbuffer;
 459
 460                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 461                 offset = 0;
 462                 for (page = 0; page < obj->page_count; page++) {
 463                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 464                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 465                                 offset += 4;
 466                         }
 467                 }
 468         }
 469
 470 out:
 471         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 472
 473         return 0;
 474 }
 475
 476 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 477 {
 478         struct drm_info_node *node = (struct drm_info_node *) m->private;
 479         struct drm_device *dev = node->minor->dev;
 480         drm_i915_private_t *dev_priv = dev->dev_private;
 481         u16 crstanddelay = I915_READ16(CRSTANDVID);
 482
 483         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 484
 485         return 0;
 486 }
 487
 488 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 489 {
 490         struct drm_info_node *node = (struct drm_info_node *) m->private;
 491         struct drm_device *dev = node->minor->dev;
 492         drm_i915_private_t *dev_priv = dev->dev_private;
 493         u16 rgvswctl = I915_READ16(MEMSWCTL);
 494         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 495
 496         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 497         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 498         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 499                    MEMSTAT_VID_SHIFT);
 500         seq_printf(m, "Current P-state: %d\n",
 501                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 502
 503         return 0;
 504 }
 505
 506 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 507 {
 508         struct drm_info_node *node = (struct drm_info_node *) m->private;
 509         struct drm_device *dev = node->minor->dev;
 510         drm_i915_private_t *dev_priv = dev->dev_private;
 511         u32 delayfreq;
 512         int i;
 513
 514         for (i = 0; i < 16; i++) {
 515                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 516                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 517                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 518         }
 519
 520         return 0;
 521 }
 522
 523 static inline int MAP_TO_MV(int map)
 524 {
 525         return 1250 - (map * 25);
 526 }
 527
 528 static int i915_inttoext_table(struct seq_file *m, void *unused)
 529 {
 530         struct drm_info_node *node = (struct drm_info_node *) m->private;
 531         struct drm_device *dev = node->minor->dev;
 532         drm_i915_private_t *dev_priv = dev->dev_private;
 533         u32 inttoext;
 534         int i;
 535
 536         for (i = 1; i <= 32; i++) {
 537                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 538                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 539         }
 540
 541         return 0;
 542 }
 543
 544 static int i915_drpc_info(struct seq_file *m, void *unused)
 545 {
 546         struct drm_info_node *node = (struct drm_info_node *) m->private;
 547         struct drm_device *dev = node->minor->dev;
 548         drm_i915_private_t *dev_priv = dev->dev_private;
 549         u32 rgvmodectl = I915_READ(MEMMODECTL);
 550         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 551         u16 crstandvid = I915_READ16(CRSTANDVID);
 552
 553         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 554                    "yes" : "no");
 555         seq_printf(m, "Boost freq: %d\n",
 556                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 557                    MEMMODE_BOOST_FREQ_SHIFT);
 558         seq_printf(m, "HW control enabled: %s\n",
 559                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 560         seq_printf(m, "SW control enabled: %s\n",
 561                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 562         seq_printf(m, "Gated voltage change: %s\n",
 563                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 564         seq_printf(m, "Starting frequency: P%d\n",
 565                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 566         seq_printf(m, "Max P-state: P%d\n",
 567                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 568         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 569         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 570         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 571         seq_printf(m, "Render standby enabled: %s\n",
 572                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 573
 574         return 0;
 575 }
 576
 577 static int i915_fbc_status(struct seq_file *m, void *unused)
 578 {
 579         struct drm_info_node *node = (struct drm_info_node *) m->private;
 580         struct drm_device *dev = node->minor->dev;
 581         drm_i915_private_t *dev_priv = dev->dev_private;
 582
 583         if (!I915_HAS_FBC(dev)) {
 584                 seq_printf(m, "FBC unsupported on this chipset\n");
 585                 return 0;
 586         }
 587
 588         if (intel_fbc_enabled(dev)) {
 589                 seq_printf(m, "FBC enabled\n");
 590         } else {
 591                 seq_printf(m, "FBC disabled: ");
 592                 switch (dev_priv->no_fbc_reason) {
 593                 case FBC_STOLEN_TOO_SMALL:
 594                         seq_printf(m, "not enough stolen memory");
 595                         break;
 596                 case FBC_UNSUPPORTED_MODE:
 597                         seq_printf(m, "mode not supported");
 598                         break;
 599                 case FBC_MODE_TOO_LARGE:
 600                         seq_printf(m, "mode too large");
 601                         break;
 602                 case FBC_BAD_PLANE:
 603                         seq_printf(m, "FBC unsupported on plane");
 604                         break;
 605                 case FBC_NOT_TILED:
 606                         seq_printf(m, "scanout buffer not tiled");
 607                         break;
 608                 default:
 609                         seq_printf(m, "unknown reason");
 610                 }
 611                 seq_printf(m, "\n");
 612         }
 613         return 0;
 614 }
 615
 616 static int i915_sr_status(struct seq_file *m, void *unused)
 617 {
 618         struct drm_info_node *node = (struct drm_info_node *) m->private;
 619         struct drm_device *dev = node->minor->dev;
 620         drm_i915_private_t *dev_priv = dev->dev_private;
 621         bool sr_enabled = false;
 622
 623         if (IS_I965G(dev) || IS_I945G(dev) || IS_I945GM(dev))
 624                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 625         else if (IS_I915GM(dev))
 626                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 627         else if (IS_PINEVIEW(dev))
 628                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 629
 630         seq_printf(m, "self-refresh: %s\n", sr_enabled ? "enabled" :
 631                    "disabled");
 632
 633         return 0;
 634 }
 635
 636 static int i915_emon_status(struct seq_file *m, void *unused)
 637 {
 638         struct drm_info_node *node = (struct drm_info_node *) m->private;
 639         struct drm_device *dev = node->minor->dev;
 640         drm_i915_private_t *dev_priv = dev->dev_private;
 641         unsigned long temp, chipset, gfx;
 642
 643         temp = i915_mch_val(dev_priv);
 644         chipset = i915_chipset_val(dev_priv);
 645         gfx = i915_gfx_val(dev_priv);
 646
 647         seq_printf(m, "GMCH temp: %ld\n", temp);
 648         seq_printf(m, "Chipset power: %ld\n", chipset);
 649         seq_printf(m, "GFX power: %ld\n", gfx);
 650         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 651
 652         return 0;
 653 }
 654
 655 static int i915_gfxec(struct seq_file *m, void *unused)
 656 {
 657         struct drm_info_node *node = (struct drm_info_node *) m->private;
 658         struct drm_device *dev = node->minor->dev;
 659         drm_i915_private_t *dev_priv = dev->dev_private;
 660
 661         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 662
 663         return 0;
 664 }
 665
 666 static int
 667 i915_wedged_open(struct inode *inode,
 668                  struct file *filp)
 669 {
 670         filp->private_data = inode->i_private;
 671         return 0;
 672 }
 673
 674 static ssize_t
 675 i915_wedged_read(struct file *filp,
 676                  char __user *ubuf,
 677                  size_t max,
 678                  loff_t *ppos)
 679 {
 680         struct drm_device *dev = filp->private_data;
 681         drm_i915_private_t *dev_priv = dev->dev_private;
 682         char buf[80];
 683         int len;
 684
 685         len = snprintf(buf, sizeof (buf),
 686                        "wedged :  %d\n",
 687                        atomic_read(&dev_priv->mm.wedged));
 688
 689         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 690 }
 691
 692 static ssize_t
 693 i915_wedged_write(struct file *filp,
 694                   const char __user *ubuf,
 695                   size_t cnt,
 696                   loff_t *ppos)
 697 {
 698         struct drm_device *dev = filp->private_data;
 699         drm_i915_private_t *dev_priv = dev->dev_private;
 700         char buf[20];
 701         int val = 1;
 702
 703         if (cnt > 0) {
 704                 if (cnt > sizeof (buf) - 1)
 705                         return -EINVAL;
 706
 707                 if (copy_from_user(buf, ubuf, cnt))
 708                         return -EFAULT;
 709                 buf[cnt] = 0;
 710
 711                 val = simple_strtoul(buf, NULL, 0);
 712         }
 713
 714         DRM_INFO("Manually setting wedged to %d\n", val);
 715
 716         atomic_set(&dev_priv->mm.wedged, val);
 717         if (val) {
 718                 DRM_WAKEUP(&dev_priv->irq_queue);
 719                 queue_work(dev_priv->wq, &dev_priv->error_work);
 720         }
 721
 722         return cnt;
 723 }
 724
 725 static const struct file_operations i915_wedged_fops = {
 726         .owner = THIS_MODULE,
 727         .open = i915_wedged_open,
 728         .read = i915_wedged_read,
 729         .write = i915_wedged_write,
 730 };
 731
 732 /* As the drm_debugfs_init() routines are called before dev->dev_private is
 733  * allocated we need to hook into the minor for release. */
 734 static int
 735 drm_add_fake_info_node(struct drm_minor *minor,
 736                        struct dentry *ent,
 737                        const void *key)
 738 {
 739         struct drm_info_node *node;
 740
 741         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
 742         if (node == NULL) {
 743                 debugfs_remove(ent);
 744                 return -ENOMEM;
 745         }
 746
 747         node->minor = minor;
 748         node->dent = ent;
 749         node->info_ent = (void *) key;
 750         list_add(&node->list, &minor->debugfs_nodes.list);
 751
 752         return 0;
 753 }
 754
 755 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
 756 {
 757         struct drm_device *dev = minor->dev;
 758         struct dentry *ent;
 759
 760         ent = debugfs_create_file("i915_wedged",
 761                                   S_IRUGO | S_IWUSR,
 762                                   root, dev,
 763                                   &i915_wedged_fops);
 764         if (IS_ERR(ent))
 765                 return PTR_ERR(ent);
 766
 767         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
 768 }
 769
 770 static struct drm_info_list i915_debugfs_list[] = {
 771         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
 772         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
 773         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
 774         {"i915_gem_request", i915_gem_request_info, 0},
 775         {"i915_gem_seqno", i915_gem_seqno_info, 0},
 776         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
 777         {"i915_gem_interrupt", i915_interrupt_info, 0},
 778         {"i915_gem_hws", i915_hws_info, 0},
 779         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
 780         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
 781         {"i915_batchbuffers", i915_batchbuffer_info, 0},
 782         {"i915_error_state", i915_error_state, 0},
 783         {"i915_rstdby_delays", i915_rstdby_delays, 0},
 784         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
 785         {"i915_delayfreq_table", i915_delayfreq_table, 0},
 786         {"i915_inttoext_table", i915_inttoext_table, 0},
 787         {"i915_drpc_info", i915_drpc_info, 0},
 788         {"i915_emon_status", i915_emon_status, 0},
 789         {"i915_gfxec", i915_gfxec, 0},
 790         {"i915_fbc_status", i915_fbc_status, 0},
 791         {"i915_sr_status", i915_sr_status, 0},
 792 };
 793 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
 794
 795 int i915_debugfs_init(struct drm_minor *minor)
 796 {
 797         int ret;
 798
 799         ret = i915_wedged_create(minor->debugfs_root, minor);
 800         if (ret)
 801                 return ret;
 802
 803         return drm_debugfs_create_files(i915_debugfs_list,
 804                                         I915_DEBUGFS_ENTRIES,
 805                                         minor->debugfs_root, minor);
 806 }
 807
 808 void i915_debugfs_cleanup(struct drm_minor *minor)
 809 {
 810         drm_debugfs_remove_files(i915_debugfs_list,
 811                                  I915_DEBUGFS_ENTRIES, minor);
 812         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
 813                                  1, minor);
 814 }
 815
 816 #endif /* CONFIG_DEBUG_FS */