drm exynos: use drm_fb_helper_set_par directly
[linux-2.6.git] / 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         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
66 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
67         B(is_mobile);
68         B(is_i85x);
69         B(is_i915g);
70         B(is_i945gm);
71         B(is_g33);
72         B(need_gfx_hws);
73         B(is_g4x);
74         B(is_pineview);
75         B(is_broadwater);
76         B(is_crestline);
77         B(has_fbc);
78         B(has_pipe_cxsr);
79         B(has_hotplug);
80         B(cursor_needs_physical);
81         B(has_overlay);
82         B(overlay_needs_physical);
83         B(supports_tv);
84         B(has_bsd_ring);
85         B(has_blt_ring);
86 #undef B
87
88         return 0;
89 }
90
91 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
92 {
93         if (obj->user_pin_count > 0)
94                 return "P";
95         else if (obj->pin_count > 0)
96                 return "p";
97         else
98                 return " ";
99 }
100
101 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
102 {
103         switch (obj->tiling_mode) {
104         default:
105         case I915_TILING_NONE: return " ";
106         case I915_TILING_X: return "X";
107         case I915_TILING_Y: return "Y";
108         }
109 }
110
111 static const char *cache_level_str(int type)
112 {
113         switch (type) {
114         case I915_CACHE_NONE: return " uncached";
115         case I915_CACHE_LLC: return " snooped (LLC)";
116         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
117         default: return "";
118         }
119 }
120
121 static void
122 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
123 {
124         seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d%s%s%s",
125                    &obj->base,
126                    get_pin_flag(obj),
127                    get_tiling_flag(obj),
128                    obj->base.size / 1024,
129                    obj->base.read_domains,
130                    obj->base.write_domain,
131                    obj->last_rendering_seqno,
132                    obj->last_fenced_seqno,
133                    cache_level_str(obj->cache_level),
134                    obj->dirty ? " dirty" : "",
135                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
136         if (obj->base.name)
137                 seq_printf(m, " (name: %d)", obj->base.name);
138         if (obj->fence_reg != I915_FENCE_REG_NONE)
139                 seq_printf(m, " (fence: %d)", obj->fence_reg);
140         if (obj->gtt_space != NULL)
141                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
142                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
143         if (obj->pin_mappable || obj->fault_mappable) {
144                 char s[3], *t = s;
145                 if (obj->pin_mappable)
146                         *t++ = 'p';
147                 if (obj->fault_mappable)
148                         *t++ = 'f';
149                 *t = '\0';
150                 seq_printf(m, " (%s mappable)", s);
151         }
152         if (obj->ring != NULL)
153                 seq_printf(m, " (%s)", obj->ring->name);
154 }
155
156 static int i915_gem_object_list_info(struct seq_file *m, void *data)
157 {
158         struct drm_info_node *node = (struct drm_info_node *) m->private;
159         uintptr_t list = (uintptr_t) node->info_ent->data;
160         struct list_head *head;
161         struct drm_device *dev = node->minor->dev;
162         drm_i915_private_t *dev_priv = dev->dev_private;
163         struct drm_i915_gem_object *obj;
164         size_t total_obj_size, total_gtt_size;
165         int count, ret;
166
167         ret = mutex_lock_interruptible(&dev->struct_mutex);
168         if (ret)
169                 return ret;
170
171         switch (list) {
172         case ACTIVE_LIST:
173                 seq_printf(m, "Active:\n");
174                 head = &dev_priv->mm.active_list;
175                 break;
176         case INACTIVE_LIST:
177                 seq_printf(m, "Inactive:\n");
178                 head = &dev_priv->mm.inactive_list;
179                 break;
180         case PINNED_LIST:
181                 seq_printf(m, "Pinned:\n");
182                 head = &dev_priv->mm.pinned_list;
183                 break;
184         case FLUSHING_LIST:
185                 seq_printf(m, "Flushing:\n");
186                 head = &dev_priv->mm.flushing_list;
187                 break;
188         case DEFERRED_FREE_LIST:
189                 seq_printf(m, "Deferred free:\n");
190                 head = &dev_priv->mm.deferred_free_list;
191                 break;
192         default:
193                 mutex_unlock(&dev->struct_mutex);
194                 return -EINVAL;
195         }
196
197         total_obj_size = total_gtt_size = count = 0;
198         list_for_each_entry(obj, head, mm_list) {
199                 seq_printf(m, "   ");
200                 describe_obj(m, obj);
201                 seq_printf(m, "\n");
202                 total_obj_size += obj->base.size;
203                 total_gtt_size += obj->gtt_space->size;
204                 count++;
205         }
206         mutex_unlock(&dev->struct_mutex);
207
208         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
209                    count, total_obj_size, total_gtt_size);
210         return 0;
211 }
212
213 #define count_objects(list, member) do { \
214         list_for_each_entry(obj, list, member) { \
215                 size += obj->gtt_space->size; \
216                 ++count; \
217                 if (obj->map_and_fenceable) { \
218                         mappable_size += obj->gtt_space->size; \
219                         ++mappable_count; \
220                 } \
221         } \
222 } while (0)
223
224 static int i915_gem_object_info(struct seq_file *m, void* data)
225 {
226         struct drm_info_node *node = (struct drm_info_node *) m->private;
227         struct drm_device *dev = node->minor->dev;
228         struct drm_i915_private *dev_priv = dev->dev_private;
229         u32 count, mappable_count;
230         size_t size, mappable_size;
231         struct drm_i915_gem_object *obj;
232         int ret;
233
234         ret = mutex_lock_interruptible(&dev->struct_mutex);
235         if (ret)
236                 return ret;
237
238         seq_printf(m, "%u objects, %zu bytes\n",
239                    dev_priv->mm.object_count,
240                    dev_priv->mm.object_memory);
241
242         size = count = mappable_size = mappable_count = 0;
243         count_objects(&dev_priv->mm.gtt_list, gtt_list);
244         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
245                    count, mappable_count, size, mappable_size);
246
247         size = count = mappable_size = mappable_count = 0;
248         count_objects(&dev_priv->mm.active_list, mm_list);
249         count_objects(&dev_priv->mm.flushing_list, mm_list);
250         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
251                    count, mappable_count, size, mappable_size);
252
253         size = count = mappable_size = mappable_count = 0;
254         count_objects(&dev_priv->mm.pinned_list, mm_list);
255         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
256                    count, mappable_count, size, mappable_size);
257
258         size = count = mappable_size = mappable_count = 0;
259         count_objects(&dev_priv->mm.inactive_list, mm_list);
260         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
261                    count, mappable_count, size, mappable_size);
262
263         size = count = mappable_size = mappable_count = 0;
264         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
265         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
266                    count, mappable_count, size, mappable_size);
267
268         size = count = mappable_size = mappable_count = 0;
269         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
270                 if (obj->fault_mappable) {
271                         size += obj->gtt_space->size;
272                         ++count;
273                 }
274                 if (obj->pin_mappable) {
275                         mappable_size += obj->gtt_space->size;
276                         ++mappable_count;
277                 }
278         }
279         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
280                    mappable_count, mappable_size);
281         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
282                    count, size);
283
284         seq_printf(m, "%zu [%zu] gtt total\n",
285                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
286
287         mutex_unlock(&dev->struct_mutex);
288
289         return 0;
290 }
291
292 static int i915_gem_gtt_info(struct seq_file *m, void* data)
293 {
294         struct drm_info_node *node = (struct drm_info_node *) m->private;
295         struct drm_device *dev = node->minor->dev;
296         struct drm_i915_private *dev_priv = dev->dev_private;
297         struct drm_i915_gem_object *obj;
298         size_t total_obj_size, total_gtt_size;
299         int count, ret;
300
301         ret = mutex_lock_interruptible(&dev->struct_mutex);
302         if (ret)
303                 return ret;
304
305         total_obj_size = total_gtt_size = count = 0;
306         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
307                 seq_printf(m, "   ");
308                 describe_obj(m, obj);
309                 seq_printf(m, "\n");
310                 total_obj_size += obj->base.size;
311                 total_gtt_size += obj->gtt_space->size;
312                 count++;
313         }
314
315         mutex_unlock(&dev->struct_mutex);
316
317         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
318                    count, total_obj_size, total_gtt_size);
319
320         return 0;
321 }
322
323
324 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
325 {
326         struct drm_info_node *node = (struct drm_info_node *) m->private;
327         struct drm_device *dev = node->minor->dev;
328         unsigned long flags;
329         struct intel_crtc *crtc;
330
331         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
332                 const char pipe = pipe_name(crtc->pipe);
333                 const char plane = plane_name(crtc->plane);
334                 struct intel_unpin_work *work;
335
336                 spin_lock_irqsave(&dev->event_lock, flags);
337                 work = crtc->unpin_work;
338                 if (work == NULL) {
339                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
340                                    pipe, plane);
341                 } else {
342                         if (!work->pending) {
343                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
344                                            pipe, plane);
345                         } else {
346                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
347                                            pipe, plane);
348                         }
349                         if (work->enable_stall_check)
350                                 seq_printf(m, "Stall check enabled, ");
351                         else
352                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
353                         seq_printf(m, "%d prepares\n", work->pending);
354
355                         if (work->old_fb_obj) {
356                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
357                                 if (obj)
358                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
359                         }
360                         if (work->pending_flip_obj) {
361                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
362                                 if (obj)
363                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
364                         }
365                 }
366                 spin_unlock_irqrestore(&dev->event_lock, flags);
367         }
368
369         return 0;
370 }
371
372 static int i915_gem_request_info(struct seq_file *m, void *data)
373 {
374         struct drm_info_node *node = (struct drm_info_node *) m->private;
375         struct drm_device *dev = node->minor->dev;
376         drm_i915_private_t *dev_priv = dev->dev_private;
377         struct drm_i915_gem_request *gem_request;
378         int ret, count;
379
380         ret = mutex_lock_interruptible(&dev->struct_mutex);
381         if (ret)
382                 return ret;
383
384         count = 0;
385         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
386                 seq_printf(m, "Render requests:\n");
387                 list_for_each_entry(gem_request,
388                                     &dev_priv->ring[RCS].request_list,
389                                     list) {
390                         seq_printf(m, "    %d @ %d\n",
391                                    gem_request->seqno,
392                                    (int) (jiffies - gem_request->emitted_jiffies));
393                 }
394                 count++;
395         }
396         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
397                 seq_printf(m, "BSD requests:\n");
398                 list_for_each_entry(gem_request,
399                                     &dev_priv->ring[VCS].request_list,
400                                     list) {
401                         seq_printf(m, "    %d @ %d\n",
402                                    gem_request->seqno,
403                                    (int) (jiffies - gem_request->emitted_jiffies));
404                 }
405                 count++;
406         }
407         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
408                 seq_printf(m, "BLT requests:\n");
409                 list_for_each_entry(gem_request,
410                                     &dev_priv->ring[BCS].request_list,
411                                     list) {
412                         seq_printf(m, "    %d @ %d\n",
413                                    gem_request->seqno,
414                                    (int) (jiffies - gem_request->emitted_jiffies));
415                 }
416                 count++;
417         }
418         mutex_unlock(&dev->struct_mutex);
419
420         if (count == 0)
421                 seq_printf(m, "No requests\n");
422
423         return 0;
424 }
425
426 static void i915_ring_seqno_info(struct seq_file *m,
427                                  struct intel_ring_buffer *ring)
428 {
429         if (ring->get_seqno) {
430                 seq_printf(m, "Current sequence (%s): %d\n",
431                            ring->name, ring->get_seqno(ring));
432                 seq_printf(m, "Waiter sequence (%s):  %d\n",
433                            ring->name, ring->waiting_seqno);
434                 seq_printf(m, "IRQ sequence (%s):     %d\n",
435                            ring->name, ring->irq_seqno);
436         }
437 }
438
439 static int i915_gem_seqno_info(struct seq_file *m, void *data)
440 {
441         struct drm_info_node *node = (struct drm_info_node *) m->private;
442         struct drm_device *dev = node->minor->dev;
443         drm_i915_private_t *dev_priv = dev->dev_private;
444         int ret, i;
445
446         ret = mutex_lock_interruptible(&dev->struct_mutex);
447         if (ret)
448                 return ret;
449
450         for (i = 0; i < I915_NUM_RINGS; i++)
451                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
452
453         mutex_unlock(&dev->struct_mutex);
454
455         return 0;
456 }
457
458
459 static int i915_interrupt_info(struct seq_file *m, void *data)
460 {
461         struct drm_info_node *node = (struct drm_info_node *) m->private;
462         struct drm_device *dev = node->minor->dev;
463         drm_i915_private_t *dev_priv = dev->dev_private;
464         int ret, i, pipe;
465
466         ret = mutex_lock_interruptible(&dev->struct_mutex);
467         if (ret)
468                 return ret;
469
470         if (!HAS_PCH_SPLIT(dev)) {
471                 seq_printf(m, "Interrupt enable:    %08x\n",
472                            I915_READ(IER));
473                 seq_printf(m, "Interrupt identity:  %08x\n",
474                            I915_READ(IIR));
475                 seq_printf(m, "Interrupt mask:      %08x\n",
476                            I915_READ(IMR));
477                 for_each_pipe(pipe)
478                         seq_printf(m, "Pipe %c stat:         %08x\n",
479                                    pipe_name(pipe),
480                                    I915_READ(PIPESTAT(pipe)));
481         } else {
482                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
483                            I915_READ(DEIER));
484                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
485                            I915_READ(DEIIR));
486                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
487                            I915_READ(DEIMR));
488                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
489                            I915_READ(SDEIER));
490                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
491                            I915_READ(SDEIIR));
492                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
493                            I915_READ(SDEIMR));
494                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
495                            I915_READ(GTIER));
496                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
497                            I915_READ(GTIIR));
498                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
499                            I915_READ(GTIMR));
500         }
501         seq_printf(m, "Interrupts received: %d\n",
502                    atomic_read(&dev_priv->irq_received));
503         for (i = 0; i < I915_NUM_RINGS; i++) {
504                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
505                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
506                                    dev_priv->ring[i].name,
507                                    I915_READ_IMR(&dev_priv->ring[i]));
508                 }
509                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
510         }
511         mutex_unlock(&dev->struct_mutex);
512
513         return 0;
514 }
515
516 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
517 {
518         struct drm_info_node *node = (struct drm_info_node *) m->private;
519         struct drm_device *dev = node->minor->dev;
520         drm_i915_private_t *dev_priv = dev->dev_private;
521         int i, ret;
522
523         ret = mutex_lock_interruptible(&dev->struct_mutex);
524         if (ret)
525                 return ret;
526
527         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
528         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
529         for (i = 0; i < dev_priv->num_fence_regs; i++) {
530                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
531
532                 seq_printf(m, "Fenced object[%2d] = ", i);
533                 if (obj == NULL)
534                         seq_printf(m, "unused");
535                 else
536                         describe_obj(m, obj);
537                 seq_printf(m, "\n");
538         }
539
540         mutex_unlock(&dev->struct_mutex);
541         return 0;
542 }
543
544 static int i915_hws_info(struct seq_file *m, void *data)
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         struct intel_ring_buffer *ring;
550         const volatile u32 __iomem *hws;
551         int i;
552
553         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
554         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
555         if (hws == NULL)
556                 return 0;
557
558         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
559                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
560                            i * 4,
561                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
562         }
563         return 0;
564 }
565
566 static void i915_dump_object(struct seq_file *m,
567                              struct io_mapping *mapping,
568                              struct drm_i915_gem_object *obj)
569 {
570         int page, page_count, i;
571
572         page_count = obj->base.size / PAGE_SIZE;
573         for (page = 0; page < page_count; page++) {
574                 u32 *mem = io_mapping_map_wc(mapping,
575                                              obj->gtt_offset + page * PAGE_SIZE);
576                 for (i = 0; i < PAGE_SIZE; i += 4)
577                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
578                 io_mapping_unmap(mem);
579         }
580 }
581
582 static int i915_batchbuffer_info(struct seq_file *m, void *data)
583 {
584         struct drm_info_node *node = (struct drm_info_node *) m->private;
585         struct drm_device *dev = node->minor->dev;
586         drm_i915_private_t *dev_priv = dev->dev_private;
587         struct drm_i915_gem_object *obj;
588         int ret;
589
590         ret = mutex_lock_interruptible(&dev->struct_mutex);
591         if (ret)
592                 return ret;
593
594         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
595                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
596                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
597                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
598                 }
599         }
600
601         mutex_unlock(&dev->struct_mutex);
602         return 0;
603 }
604
605 static int i915_ringbuffer_data(struct seq_file *m, void *data)
606 {
607         struct drm_info_node *node = (struct drm_info_node *) m->private;
608         struct drm_device *dev = node->minor->dev;
609         drm_i915_private_t *dev_priv = dev->dev_private;
610         struct intel_ring_buffer *ring;
611         int ret;
612
613         ret = mutex_lock_interruptible(&dev->struct_mutex);
614         if (ret)
615                 return ret;
616
617         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
618         if (!ring->obj) {
619                 seq_printf(m, "No ringbuffer setup\n");
620         } else {
621                 const u8 __iomem *virt = ring->virtual_start;
622                 uint32_t off;
623
624                 for (off = 0; off < ring->size; off += 4) {
625                         uint32_t *ptr = (uint32_t *)(virt + off);
626                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
627                 }
628         }
629         mutex_unlock(&dev->struct_mutex);
630
631         return 0;
632 }
633
634 static int i915_ringbuffer_info(struct seq_file *m, void *data)
635 {
636         struct drm_info_node *node = (struct drm_info_node *) m->private;
637         struct drm_device *dev = node->minor->dev;
638         drm_i915_private_t *dev_priv = dev->dev_private;
639         struct intel_ring_buffer *ring;
640         int ret;
641
642         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
643         if (ring->size == 0)
644                 return 0;
645
646         ret = mutex_lock_interruptible(&dev->struct_mutex);
647         if (ret)
648                 return ret;
649
650         seq_printf(m, "Ring %s:\n", ring->name);
651         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
652         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
653         seq_printf(m, "  Size :    %08x\n", ring->size);
654         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
655         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
656         if (IS_GEN6(dev) || IS_GEN7(dev)) {
657                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
658                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
659         }
660         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
661         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
662
663         mutex_unlock(&dev->struct_mutex);
664
665         return 0;
666 }
667
668 static const char *ring_str(int ring)
669 {
670         switch (ring) {
671         case RING_RENDER: return " render";
672         case RING_BSD: return " bsd";
673         case RING_BLT: return " blt";
674         default: return "";
675         }
676 }
677
678 static const char *pin_flag(int pinned)
679 {
680         if (pinned > 0)
681                 return " P";
682         else if (pinned < 0)
683                 return " p";
684         else
685                 return "";
686 }
687
688 static const char *tiling_flag(int tiling)
689 {
690         switch (tiling) {
691         default:
692         case I915_TILING_NONE: return "";
693         case I915_TILING_X: return " X";
694         case I915_TILING_Y: return " Y";
695         }
696 }
697
698 static const char *dirty_flag(int dirty)
699 {
700         return dirty ? " dirty" : "";
701 }
702
703 static const char *purgeable_flag(int purgeable)
704 {
705         return purgeable ? " purgeable" : "";
706 }
707
708 static void print_error_buffers(struct seq_file *m,
709                                 const char *name,
710                                 struct drm_i915_error_buffer *err,
711                                 int count)
712 {
713         seq_printf(m, "%s [%d]:\n", name, count);
714
715         while (count--) {
716                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
717                            err->gtt_offset,
718                            err->size,
719                            err->read_domains,
720                            err->write_domain,
721                            err->seqno,
722                            pin_flag(err->pinned),
723                            tiling_flag(err->tiling),
724                            dirty_flag(err->dirty),
725                            purgeable_flag(err->purgeable),
726                            ring_str(err->ring),
727                            cache_level_str(err->cache_level));
728
729                 if (err->name)
730                         seq_printf(m, " (name: %d)", err->name);
731                 if (err->fence_reg != I915_FENCE_REG_NONE)
732                         seq_printf(m, " (fence: %d)", err->fence_reg);
733
734                 seq_printf(m, "\n");
735                 err++;
736         }
737 }
738
739 static int i915_error_state(struct seq_file *m, void *unused)
740 {
741         struct drm_info_node *node = (struct drm_info_node *) m->private;
742         struct drm_device *dev = node->minor->dev;
743         drm_i915_private_t *dev_priv = dev->dev_private;
744         struct drm_i915_error_state *error;
745         unsigned long flags;
746         int i, page, offset, elt;
747
748         spin_lock_irqsave(&dev_priv->error_lock, flags);
749         if (!dev_priv->first_error) {
750                 seq_printf(m, "no error state collected\n");
751                 goto out;
752         }
753
754         error = dev_priv->first_error;
755
756         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
757                    error->time.tv_usec);
758         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
759         seq_printf(m, "EIR: 0x%08x\n", error->eir);
760         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
761         if (INTEL_INFO(dev)->gen >= 6) {
762                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
763                 seq_printf(m, "Blitter command stream:\n");
764                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
765                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
766                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
767                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
768                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
769                 seq_printf(m, "Video (BSD) command stream:\n");
770                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
771                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
772                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
773                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
774                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
775         }
776         seq_printf(m, "Render command stream:\n");
777         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
778         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
779         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
780         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
781         if (INTEL_INFO(dev)->gen >= 4) {
782                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
783                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
784         }
785         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
786         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
787
788         for (i = 0; i < dev_priv->num_fence_regs; i++)
789                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
790
791         if (error->active_bo)
792                 print_error_buffers(m, "Active",
793                                     error->active_bo,
794                                     error->active_bo_count);
795
796         if (error->pinned_bo)
797                 print_error_buffers(m, "Pinned",
798                                     error->pinned_bo,
799                                     error->pinned_bo_count);
800
801         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
802                 if (error->batchbuffer[i]) {
803                         struct drm_i915_error_object *obj = error->batchbuffer[i];
804
805                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
806                                    dev_priv->ring[i].name,
807                                    obj->gtt_offset);
808                         offset = 0;
809                         for (page = 0; page < obj->page_count; page++) {
810                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
811                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
812                                         offset += 4;
813                                 }
814                         }
815                 }
816         }
817
818         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
819                 if (error->ringbuffer[i]) {
820                         struct drm_i915_error_object *obj = error->ringbuffer[i];
821                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
822                                    dev_priv->ring[i].name,
823                                    obj->gtt_offset);
824                         offset = 0;
825                         for (page = 0; page < obj->page_count; page++) {
826                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
827                                         seq_printf(m, "%08x :  %08x\n",
828                                                    offset,
829                                                    obj->pages[page][elt]);
830                                         offset += 4;
831                                 }
832                         }
833                 }
834         }
835
836         if (error->overlay)
837                 intel_overlay_print_error_state(m, error->overlay);
838
839         if (error->display)
840                 intel_display_print_error_state(m, dev, error->display);
841
842 out:
843         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
844
845         return 0;
846 }
847
848 static int i915_rstdby_delays(struct seq_file *m, void *unused)
849 {
850         struct drm_info_node *node = (struct drm_info_node *) m->private;
851         struct drm_device *dev = node->minor->dev;
852         drm_i915_private_t *dev_priv = dev->dev_private;
853         u16 crstanddelay;
854         int ret;
855
856         ret = mutex_lock_interruptible(&dev->struct_mutex);
857         if (ret)
858                 return ret;
859
860         crstanddelay = I915_READ16(CRSTANDVID);
861
862         mutex_unlock(&dev->struct_mutex);
863
864         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
865
866         return 0;
867 }
868
869 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
870 {
871         struct drm_info_node *node = (struct drm_info_node *) m->private;
872         struct drm_device *dev = node->minor->dev;
873         drm_i915_private_t *dev_priv = dev->dev_private;
874         int ret;
875
876         if (IS_GEN5(dev)) {
877                 u16 rgvswctl = I915_READ16(MEMSWCTL);
878                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
879
880                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
881                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
882                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
883                            MEMSTAT_VID_SHIFT);
884                 seq_printf(m, "Current P-state: %d\n",
885                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
886         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
887                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
888                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
889                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
890                 u32 rpstat;
891                 u32 rpupei, rpcurup, rpprevup;
892                 u32 rpdownei, rpcurdown, rpprevdown;
893                 int max_freq;
894
895                 /* RPSTAT1 is in the GT power well */
896                 ret = mutex_lock_interruptible(&dev->struct_mutex);
897                 if (ret)
898                         return ret;
899
900                 gen6_gt_force_wake_get(dev_priv);
901
902                 rpstat = I915_READ(GEN6_RPSTAT1);
903                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
904                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
905                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
906                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
907                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
908                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
909
910                 gen6_gt_force_wake_put(dev_priv);
911                 mutex_unlock(&dev->struct_mutex);
912
913                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
914                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
915                 seq_printf(m, "Render p-state ratio: %d\n",
916                            (gt_perf_status & 0xff00) >> 8);
917                 seq_printf(m, "Render p-state VID: %d\n",
918                            gt_perf_status & 0xff);
919                 seq_printf(m, "Render p-state limit: %d\n",
920                            rp_state_limits & 0xff);
921                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
922                                                 GEN6_CAGF_SHIFT) * 50);
923                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
924                            GEN6_CURICONT_MASK);
925                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
926                            GEN6_CURBSYTAVG_MASK);
927                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
928                            GEN6_CURBSYTAVG_MASK);
929                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
930                            GEN6_CURIAVG_MASK);
931                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
932                            GEN6_CURBSYTAVG_MASK);
933                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
934                            GEN6_CURBSYTAVG_MASK);
935
936                 max_freq = (rp_state_cap & 0xff0000) >> 16;
937                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
938                            max_freq * 50);
939
940                 max_freq = (rp_state_cap & 0xff00) >> 8;
941                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
942                            max_freq * 50);
943
944                 max_freq = rp_state_cap & 0xff;
945                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
946                            max_freq * 50);
947         } else {
948                 seq_printf(m, "no P-state info available\n");
949         }
950
951         return 0;
952 }
953
954 static int i915_delayfreq_table(struct seq_file *m, void *unused)
955 {
956         struct drm_info_node *node = (struct drm_info_node *) m->private;
957         struct drm_device *dev = node->minor->dev;
958         drm_i915_private_t *dev_priv = dev->dev_private;
959         u32 delayfreq;
960         int ret, i;
961
962         ret = mutex_lock_interruptible(&dev->struct_mutex);
963         if (ret)
964                 return ret;
965
966         for (i = 0; i < 16; i++) {
967                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
968                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
969                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
970         }
971
972         mutex_unlock(&dev->struct_mutex);
973
974         return 0;
975 }
976
977 static inline int MAP_TO_MV(int map)
978 {
979         return 1250 - (map * 25);
980 }
981
982 static int i915_inttoext_table(struct seq_file *m, void *unused)
983 {
984         struct drm_info_node *node = (struct drm_info_node *) m->private;
985         struct drm_device *dev = node->minor->dev;
986         drm_i915_private_t *dev_priv = dev->dev_private;
987         u32 inttoext;
988         int ret, i;
989
990         ret = mutex_lock_interruptible(&dev->struct_mutex);
991         if (ret)
992                 return ret;
993
994         for (i = 1; i <= 32; i++) {
995                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
996                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
997         }
998
999         mutex_unlock(&dev->struct_mutex);
1000
1001         return 0;
1002 }
1003
1004 static int ironlake_drpc_info(struct seq_file *m)
1005 {
1006         struct drm_info_node *node = (struct drm_info_node *) m->private;
1007         struct drm_device *dev = node->minor->dev;
1008         drm_i915_private_t *dev_priv = dev->dev_private;
1009         u32 rgvmodectl, rstdbyctl;
1010         u16 crstandvid;
1011         int ret;
1012
1013         ret = mutex_lock_interruptible(&dev->struct_mutex);
1014         if (ret)
1015                 return ret;
1016
1017         rgvmodectl = I915_READ(MEMMODECTL);
1018         rstdbyctl = I915_READ(RSTDBYCTL);
1019         crstandvid = I915_READ16(CRSTANDVID);
1020
1021         mutex_unlock(&dev->struct_mutex);
1022
1023         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1024                    "yes" : "no");
1025         seq_printf(m, "Boost freq: %d\n",
1026                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1027                    MEMMODE_BOOST_FREQ_SHIFT);
1028         seq_printf(m, "HW control enabled: %s\n",
1029                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1030         seq_printf(m, "SW control enabled: %s\n",
1031                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1032         seq_printf(m, "Gated voltage change: %s\n",
1033                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1034         seq_printf(m, "Starting frequency: P%d\n",
1035                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1036         seq_printf(m, "Max P-state: P%d\n",
1037                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1038         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1039         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1040         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1041         seq_printf(m, "Render standby enabled: %s\n",
1042                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1043         seq_printf(m, "Current RS state: ");
1044         switch (rstdbyctl & RSX_STATUS_MASK) {
1045         case RSX_STATUS_ON:
1046                 seq_printf(m, "on\n");
1047                 break;
1048         case RSX_STATUS_RC1:
1049                 seq_printf(m, "RC1\n");
1050                 break;
1051         case RSX_STATUS_RC1E:
1052                 seq_printf(m, "RC1E\n");
1053                 break;
1054         case RSX_STATUS_RS1:
1055                 seq_printf(m, "RS1\n");
1056                 break;
1057         case RSX_STATUS_RS2:
1058                 seq_printf(m, "RS2 (RC6)\n");
1059                 break;
1060         case RSX_STATUS_RS3:
1061                 seq_printf(m, "RC3 (RC6+)\n");
1062                 break;
1063         default:
1064                 seq_printf(m, "unknown\n");
1065                 break;
1066         }
1067
1068         return 0;
1069 }
1070
1071 static int gen6_drpc_info(struct seq_file *m)
1072 {
1073
1074         struct drm_info_node *node = (struct drm_info_node *) m->private;
1075         struct drm_device *dev = node->minor->dev;
1076         struct drm_i915_private *dev_priv = dev->dev_private;
1077         u32 rpmodectl1, gt_core_status, rcctl1;
1078         unsigned forcewake_count;
1079         int count=0, ret;
1080
1081
1082         ret = mutex_lock_interruptible(&dev->struct_mutex);
1083         if (ret)
1084                 return ret;
1085
1086         spin_lock_irq(&dev_priv->gt_lock);
1087         forcewake_count = dev_priv->forcewake_count;
1088         spin_unlock_irq(&dev_priv->gt_lock);
1089
1090         if (forcewake_count) {
1091                 seq_printf(m, "RC information inaccurate because somebody "
1092                               "holds a forcewake reference \n");
1093         } else {
1094                 /* NB: we cannot use forcewake, else we read the wrong values */
1095                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1096                         udelay(10);
1097                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1098         }
1099
1100         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1101         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1102
1103         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1104         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1105         mutex_unlock(&dev->struct_mutex);
1106
1107         seq_printf(m, "Video Turbo Mode: %s\n",
1108                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1109         seq_printf(m, "HW control enabled: %s\n",
1110                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1111         seq_printf(m, "SW control enabled: %s\n",
1112                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1113                           GEN6_RP_MEDIA_SW_MODE));
1114         seq_printf(m, "RC1e Enabled: %s\n",
1115                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1116         seq_printf(m, "RC6 Enabled: %s\n",
1117                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1118         seq_printf(m, "Deep RC6 Enabled: %s\n",
1119                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1120         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1121                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1122         seq_printf(m, "Current RC state: ");
1123         switch (gt_core_status & GEN6_RCn_MASK) {
1124         case GEN6_RC0:
1125                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1126                         seq_printf(m, "Core Power Down\n");
1127                 else
1128                         seq_printf(m, "on\n");
1129                 break;
1130         case GEN6_RC3:
1131                 seq_printf(m, "RC3\n");
1132                 break;
1133         case GEN6_RC6:
1134                 seq_printf(m, "RC6\n");
1135                 break;
1136         case GEN6_RC7:
1137                 seq_printf(m, "RC7\n");
1138                 break;
1139         default:
1140                 seq_printf(m, "Unknown\n");
1141                 break;
1142         }
1143
1144         seq_printf(m, "Core Power Down: %s\n",
1145                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1146         return 0;
1147 }
1148
1149 static int i915_drpc_info(struct seq_file *m, void *unused)
1150 {
1151         struct drm_info_node *node = (struct drm_info_node *) m->private;
1152         struct drm_device *dev = node->minor->dev;
1153
1154         if (IS_GEN6(dev) || IS_GEN7(dev))
1155                 return gen6_drpc_info(m);
1156         else
1157                 return ironlake_drpc_info(m);
1158 }
1159
1160 static int i915_fbc_status(struct seq_file *m, void *unused)
1161 {
1162         struct drm_info_node *node = (struct drm_info_node *) m->private;
1163         struct drm_device *dev = node->minor->dev;
1164         drm_i915_private_t *dev_priv = dev->dev_private;
1165
1166         if (!I915_HAS_FBC(dev)) {
1167                 seq_printf(m, "FBC unsupported on this chipset\n");
1168                 return 0;
1169         }
1170
1171         if (intel_fbc_enabled(dev)) {
1172                 seq_printf(m, "FBC enabled\n");
1173         } else {
1174                 seq_printf(m, "FBC disabled: ");
1175                 switch (dev_priv->no_fbc_reason) {
1176                 case FBC_NO_OUTPUT:
1177                         seq_printf(m, "no outputs");
1178                         break;
1179                 case FBC_STOLEN_TOO_SMALL:
1180                         seq_printf(m, "not enough stolen memory");
1181                         break;
1182                 case FBC_UNSUPPORTED_MODE:
1183                         seq_printf(m, "mode not supported");
1184                         break;
1185                 case FBC_MODE_TOO_LARGE:
1186                         seq_printf(m, "mode too large");
1187                         break;
1188                 case FBC_BAD_PLANE:
1189                         seq_printf(m, "FBC unsupported on plane");
1190                         break;
1191                 case FBC_NOT_TILED:
1192                         seq_printf(m, "scanout buffer not tiled");
1193                         break;
1194                 case FBC_MULTIPLE_PIPES:
1195                         seq_printf(m, "multiple pipes are enabled");
1196                         break;
1197                 case FBC_MODULE_PARAM:
1198                         seq_printf(m, "disabled per module param (default off)");
1199                         break;
1200                 default:
1201                         seq_printf(m, "unknown reason");
1202                 }
1203                 seq_printf(m, "\n");
1204         }
1205         return 0;
1206 }
1207
1208 static int i915_sr_status(struct seq_file *m, void *unused)
1209 {
1210         struct drm_info_node *node = (struct drm_info_node *) m->private;
1211         struct drm_device *dev = node->minor->dev;
1212         drm_i915_private_t *dev_priv = dev->dev_private;
1213         bool sr_enabled = false;
1214
1215         if (HAS_PCH_SPLIT(dev))
1216                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1217         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1218                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1219         else if (IS_I915GM(dev))
1220                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1221         else if (IS_PINEVIEW(dev))
1222                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1223
1224         seq_printf(m, "self-refresh: %s\n",
1225                    sr_enabled ? "enabled" : "disabled");
1226
1227         return 0;
1228 }
1229
1230 static int i915_emon_status(struct seq_file *m, void *unused)
1231 {
1232         struct drm_info_node *node = (struct drm_info_node *) m->private;
1233         struct drm_device *dev = node->minor->dev;
1234         drm_i915_private_t *dev_priv = dev->dev_private;
1235         unsigned long temp, chipset, gfx;
1236         int ret;
1237
1238         ret = mutex_lock_interruptible(&dev->struct_mutex);
1239         if (ret)
1240                 return ret;
1241
1242         temp = i915_mch_val(dev_priv);
1243         chipset = i915_chipset_val(dev_priv);
1244         gfx = i915_gfx_val(dev_priv);
1245         mutex_unlock(&dev->struct_mutex);
1246
1247         seq_printf(m, "GMCH temp: %ld\n", temp);
1248         seq_printf(m, "Chipset power: %ld\n", chipset);
1249         seq_printf(m, "GFX power: %ld\n", gfx);
1250         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1251
1252         return 0;
1253 }
1254
1255 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1256 {
1257         struct drm_info_node *node = (struct drm_info_node *) m->private;
1258         struct drm_device *dev = node->minor->dev;
1259         drm_i915_private_t *dev_priv = dev->dev_private;
1260         int ret;
1261         int gpu_freq, ia_freq;
1262
1263         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1264                 seq_printf(m, "unsupported on this chipset\n");
1265                 return 0;
1266         }
1267
1268         ret = mutex_lock_interruptible(&dev->struct_mutex);
1269         if (ret)
1270                 return ret;
1271
1272         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1273
1274         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1275              gpu_freq++) {
1276                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1277                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1278                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1279                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1280                               GEN6_PCODE_READY) == 0, 10)) {
1281                         DRM_ERROR("pcode read of freq table timed out\n");
1282                         continue;
1283                 }
1284                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1285                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1286         }
1287
1288         mutex_unlock(&dev->struct_mutex);
1289
1290         return 0;
1291 }
1292
1293 static int i915_gfxec(struct seq_file *m, void *unused)
1294 {
1295         struct drm_info_node *node = (struct drm_info_node *) m->private;
1296         struct drm_device *dev = node->minor->dev;
1297         drm_i915_private_t *dev_priv = dev->dev_private;
1298         int ret;
1299
1300         ret = mutex_lock_interruptible(&dev->struct_mutex);
1301         if (ret)
1302                 return ret;
1303
1304         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1305
1306         mutex_unlock(&dev->struct_mutex);
1307
1308         return 0;
1309 }
1310
1311 static int i915_opregion(struct seq_file *m, void *unused)
1312 {
1313         struct drm_info_node *node = (struct drm_info_node *) m->private;
1314         struct drm_device *dev = node->minor->dev;
1315         drm_i915_private_t *dev_priv = dev->dev_private;
1316         struct intel_opregion *opregion = &dev_priv->opregion;
1317         int ret;
1318
1319         ret = mutex_lock_interruptible(&dev->struct_mutex);
1320         if (ret)
1321                 return ret;
1322
1323         if (opregion->header)
1324                 seq_write(m, opregion->header, OPREGION_SIZE);
1325
1326         mutex_unlock(&dev->struct_mutex);
1327
1328         return 0;
1329 }
1330
1331 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1332 {
1333         struct drm_info_node *node = (struct drm_info_node *) m->private;
1334         struct drm_device *dev = node->minor->dev;
1335         drm_i915_private_t *dev_priv = dev->dev_private;
1336         struct intel_fbdev *ifbdev;
1337         struct intel_framebuffer *fb;
1338         int ret;
1339
1340         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1341         if (ret)
1342                 return ret;
1343
1344         ifbdev = dev_priv->fbdev;
1345         fb = to_intel_framebuffer(ifbdev->helper.fb);
1346
1347         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1348                    fb->base.width,
1349                    fb->base.height,
1350                    fb->base.depth,
1351                    fb->base.bits_per_pixel);
1352         describe_obj(m, fb->obj);
1353         seq_printf(m, "\n");
1354
1355         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1356                 if (&fb->base == ifbdev->helper.fb)
1357                         continue;
1358
1359                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1360                            fb->base.width,
1361                            fb->base.height,
1362                            fb->base.depth,
1363                            fb->base.bits_per_pixel);
1364                 describe_obj(m, fb->obj);
1365                 seq_printf(m, "\n");
1366         }
1367
1368         mutex_unlock(&dev->mode_config.mutex);
1369
1370         return 0;
1371 }
1372
1373 static int i915_context_status(struct seq_file *m, void *unused)
1374 {
1375         struct drm_info_node *node = (struct drm_info_node *) m->private;
1376         struct drm_device *dev = node->minor->dev;
1377         drm_i915_private_t *dev_priv = dev->dev_private;
1378         int ret;
1379
1380         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1381         if (ret)
1382                 return ret;
1383
1384         if (dev_priv->pwrctx) {
1385                 seq_printf(m, "power context ");
1386                 describe_obj(m, dev_priv->pwrctx);
1387                 seq_printf(m, "\n");
1388         }
1389
1390         if (dev_priv->renderctx) {
1391                 seq_printf(m, "render context ");
1392                 describe_obj(m, dev_priv->renderctx);
1393                 seq_printf(m, "\n");
1394         }
1395
1396         mutex_unlock(&dev->mode_config.mutex);
1397
1398         return 0;
1399 }
1400
1401 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1402 {
1403         struct drm_info_node *node = (struct drm_info_node *) m->private;
1404         struct drm_device *dev = node->minor->dev;
1405         struct drm_i915_private *dev_priv = dev->dev_private;
1406         unsigned forcewake_count;
1407
1408         spin_lock_irq(&dev_priv->gt_lock);
1409         forcewake_count = dev_priv->forcewake_count;
1410         spin_unlock_irq(&dev_priv->gt_lock);
1411
1412         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1413
1414         return 0;
1415 }
1416
1417 static int
1418 i915_wedged_open(struct inode *inode,
1419                  struct file *filp)
1420 {
1421         filp->private_data = inode->i_private;
1422         return 0;
1423 }
1424
1425 static ssize_t
1426 i915_wedged_read(struct file *filp,
1427                  char __user *ubuf,
1428                  size_t max,
1429                  loff_t *ppos)
1430 {
1431         struct drm_device *dev = filp->private_data;
1432         drm_i915_private_t *dev_priv = dev->dev_private;
1433         char buf[80];
1434         int len;
1435
1436         len = snprintf(buf, sizeof(buf),
1437                        "wedged :  %d\n",
1438                        atomic_read(&dev_priv->mm.wedged));
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_wedged_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         char buf[20];
1454         int val = 1;
1455
1456         if (cnt > 0) {
1457                 if (cnt > sizeof(buf) - 1)
1458                         return -EINVAL;
1459
1460                 if (copy_from_user(buf, ubuf, cnt))
1461                         return -EFAULT;
1462                 buf[cnt] = 0;
1463
1464                 val = simple_strtoul(buf, NULL, 0);
1465         }
1466
1467         DRM_INFO("Manually setting wedged to %d\n", val);
1468         i915_handle_error(dev, val);
1469
1470         return cnt;
1471 }
1472
1473 static const struct file_operations i915_wedged_fops = {
1474         .owner = THIS_MODULE,
1475         .open = i915_wedged_open,
1476         .read = i915_wedged_read,
1477         .write = i915_wedged_write,
1478         .llseek = default_llseek,
1479 };
1480
1481 static int
1482 i915_max_freq_open(struct inode *inode,
1483                    struct file *filp)
1484 {
1485         filp->private_data = inode->i_private;
1486         return 0;
1487 }
1488
1489 static ssize_t
1490 i915_max_freq_read(struct file *filp,
1491                    char __user *ubuf,
1492                    size_t max,
1493                    loff_t *ppos)
1494 {
1495         struct drm_device *dev = filp->private_data;
1496         drm_i915_private_t *dev_priv = dev->dev_private;
1497         char buf[80];
1498         int len;
1499
1500         len = snprintf(buf, sizeof(buf),
1501                        "max freq: %d\n", dev_priv->max_delay * 50);
1502
1503         if (len > sizeof(buf))
1504                 len = sizeof(buf);
1505
1506         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1507 }
1508
1509 static ssize_t
1510 i915_max_freq_write(struct file *filp,
1511                   const char __user *ubuf,
1512                   size_t cnt,
1513                   loff_t *ppos)
1514 {
1515         struct drm_device *dev = filp->private_data;
1516         struct drm_i915_private *dev_priv = dev->dev_private;
1517         char buf[20];
1518         int val = 1;
1519
1520         if (cnt > 0) {
1521                 if (cnt > sizeof(buf) - 1)
1522                         return -EINVAL;
1523
1524                 if (copy_from_user(buf, ubuf, cnt))
1525                         return -EFAULT;
1526                 buf[cnt] = 0;
1527
1528                 val = simple_strtoul(buf, NULL, 0);
1529         }
1530
1531         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1532
1533         /*
1534          * Turbo will still be enabled, but won't go above the set value.
1535          */
1536         dev_priv->max_delay = val / 50;
1537
1538         gen6_set_rps(dev, val / 50);
1539
1540         return cnt;
1541 }
1542
1543 static const struct file_operations i915_max_freq_fops = {
1544         .owner = THIS_MODULE,
1545         .open = i915_max_freq_open,
1546         .read = i915_max_freq_read,
1547         .write = i915_max_freq_write,
1548         .llseek = default_llseek,
1549 };
1550
1551 static int
1552 i915_cache_sharing_open(struct inode *inode,
1553                    struct file *filp)
1554 {
1555         filp->private_data = inode->i_private;
1556         return 0;
1557 }
1558
1559 static ssize_t
1560 i915_cache_sharing_read(struct file *filp,
1561                    char __user *ubuf,
1562                    size_t max,
1563                    loff_t *ppos)
1564 {
1565         struct drm_device *dev = filp->private_data;
1566         drm_i915_private_t *dev_priv = dev->dev_private;
1567         char buf[80];
1568         u32 snpcr;
1569         int len;
1570
1571         mutex_lock(&dev_priv->dev->struct_mutex);
1572         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1573         mutex_unlock(&dev_priv->dev->struct_mutex);
1574
1575         len = snprintf(buf, sizeof(buf),
1576                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1577                        GEN6_MBC_SNPCR_SHIFT);
1578
1579         if (len > sizeof(buf))
1580                 len = sizeof(buf);
1581
1582         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1583 }
1584
1585 static ssize_t
1586 i915_cache_sharing_write(struct file *filp,
1587                   const char __user *ubuf,
1588                   size_t cnt,
1589                   loff_t *ppos)
1590 {
1591         struct drm_device *dev = filp->private_data;
1592         struct drm_i915_private *dev_priv = dev->dev_private;
1593         char buf[20];
1594         u32 snpcr;
1595         int val = 1;
1596
1597         if (cnt > 0) {
1598                 if (cnt > sizeof(buf) - 1)
1599                         return -EINVAL;
1600
1601                 if (copy_from_user(buf, ubuf, cnt))
1602                         return -EFAULT;
1603                 buf[cnt] = 0;
1604
1605                 val = simple_strtoul(buf, NULL, 0);
1606         }
1607
1608         if (val < 0 || val > 3)
1609                 return -EINVAL;
1610
1611         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1612
1613         /* Update the cache sharing policy here as well */
1614         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1615         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1616         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1617         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1618
1619         return cnt;
1620 }
1621
1622 static const struct file_operations i915_cache_sharing_fops = {
1623         .owner = THIS_MODULE,
1624         .open = i915_cache_sharing_open,
1625         .read = i915_cache_sharing_read,
1626         .write = i915_cache_sharing_write,
1627         .llseek = default_llseek,
1628 };
1629
1630 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1631  * allocated we need to hook into the minor for release. */
1632 static int
1633 drm_add_fake_info_node(struct drm_minor *minor,
1634                        struct dentry *ent,
1635                        const void *key)
1636 {
1637         struct drm_info_node *node;
1638
1639         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1640         if (node == NULL) {
1641                 debugfs_remove(ent);
1642                 return -ENOMEM;
1643         }
1644
1645         node->minor = minor;
1646         node->dent = ent;
1647         node->info_ent = (void *) key;
1648
1649         mutex_lock(&minor->debugfs_lock);
1650         list_add(&node->list, &minor->debugfs_list);
1651         mutex_unlock(&minor->debugfs_lock);
1652
1653         return 0;
1654 }
1655
1656 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1657 {
1658         struct drm_device *dev = minor->dev;
1659         struct dentry *ent;
1660
1661         ent = debugfs_create_file("i915_wedged",
1662                                   S_IRUGO | S_IWUSR,
1663                                   root, dev,
1664                                   &i915_wedged_fops);
1665         if (IS_ERR(ent))
1666                 return PTR_ERR(ent);
1667
1668         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1669 }
1670
1671 static int i915_forcewake_open(struct inode *inode, struct file *file)
1672 {
1673         struct drm_device *dev = inode->i_private;
1674         struct drm_i915_private *dev_priv = dev->dev_private;
1675         int ret;
1676
1677         if (INTEL_INFO(dev)->gen < 6)
1678                 return 0;
1679
1680         ret = mutex_lock_interruptible(&dev->struct_mutex);
1681         if (ret)
1682                 return ret;
1683         gen6_gt_force_wake_get(dev_priv);
1684         mutex_unlock(&dev->struct_mutex);
1685
1686         return 0;
1687 }
1688
1689 int i915_forcewake_release(struct inode *inode, struct file *file)
1690 {
1691         struct drm_device *dev = inode->i_private;
1692         struct drm_i915_private *dev_priv = dev->dev_private;
1693
1694         if (INTEL_INFO(dev)->gen < 6)
1695                 return 0;
1696
1697         /*
1698          * It's bad that we can potentially hang userspace if struct_mutex gets
1699          * forever stuck.  However, if we cannot acquire this lock it means that
1700          * almost certainly the driver has hung, is not unload-able. Therefore
1701          * hanging here is probably a minor inconvenience not to be seen my
1702          * almost every user.
1703          */
1704         mutex_lock(&dev->struct_mutex);
1705         gen6_gt_force_wake_put(dev_priv);
1706         mutex_unlock(&dev->struct_mutex);
1707
1708         return 0;
1709 }
1710
1711 static const struct file_operations i915_forcewake_fops = {
1712         .owner = THIS_MODULE,
1713         .open = i915_forcewake_open,
1714         .release = i915_forcewake_release,
1715 };
1716
1717 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1718 {
1719         struct drm_device *dev = minor->dev;
1720         struct dentry *ent;
1721
1722         ent = debugfs_create_file("i915_forcewake_user",
1723                                   S_IRUSR,
1724                                   root, dev,
1725                                   &i915_forcewake_fops);
1726         if (IS_ERR(ent))
1727                 return PTR_ERR(ent);
1728
1729         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1730 }
1731
1732 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1733 {
1734         struct drm_device *dev = minor->dev;
1735         struct dentry *ent;
1736
1737         ent = debugfs_create_file("i915_max_freq",
1738                                   S_IRUGO | S_IWUSR,
1739                                   root, dev,
1740                                   &i915_max_freq_fops);
1741         if (IS_ERR(ent))
1742                 return PTR_ERR(ent);
1743
1744         return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1745 }
1746
1747 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1748 {
1749         struct drm_device *dev = minor->dev;
1750         struct dentry *ent;
1751
1752         ent = debugfs_create_file("i915_cache_sharing",
1753                                   S_IRUGO | S_IWUSR,
1754                                   root, dev,
1755                                   &i915_cache_sharing_fops);
1756         if (IS_ERR(ent))
1757                 return PTR_ERR(ent);
1758
1759         return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1760 }
1761
1762 static struct drm_info_list i915_debugfs_list[] = {
1763         {"i915_capabilities", i915_capabilities, 0},
1764         {"i915_gem_objects", i915_gem_object_info, 0},
1765         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1766         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1767         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1768         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1769         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1770         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1771         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1772         {"i915_gem_request", i915_gem_request_info, 0},
1773         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1774         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1775         {"i915_gem_interrupt", i915_interrupt_info, 0},
1776         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1777         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1778         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1779         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1780         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1781         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1782         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1783         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1784         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1785         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1786         {"i915_error_state", i915_error_state, 0},
1787         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1788         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1789         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1790         {"i915_inttoext_table", i915_inttoext_table, 0},
1791         {"i915_drpc_info", i915_drpc_info, 0},
1792         {"i915_emon_status", i915_emon_status, 0},
1793         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1794         {"i915_gfxec", i915_gfxec, 0},
1795         {"i915_fbc_status", i915_fbc_status, 0},
1796         {"i915_sr_status", i915_sr_status, 0},
1797         {"i915_opregion", i915_opregion, 0},
1798         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1799         {"i915_context_status", i915_context_status, 0},
1800         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1801 };
1802 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1803
1804 int i915_debugfs_init(struct drm_minor *minor)
1805 {
1806         int ret;
1807
1808         ret = i915_wedged_create(minor->debugfs_root, minor);
1809         if (ret)
1810                 return ret;
1811
1812         ret = i915_forcewake_create(minor->debugfs_root, minor);
1813         if (ret)
1814                 return ret;
1815         ret = i915_max_freq_create(minor->debugfs_root, minor);
1816         if (ret)
1817                 return ret;
1818         ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1819         if (ret)
1820                 return ret;
1821
1822         return drm_debugfs_create_files(i915_debugfs_list,
1823                                         I915_DEBUGFS_ENTRIES,
1824                                         minor->debugfs_root, minor);
1825 }
1826
1827 void i915_debugfs_cleanup(struct drm_minor *minor)
1828 {
1829         drm_debugfs_remove_files(i915_debugfs_list,
1830                                  I915_DEBUGFS_ENTRIES, minor);
1831         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1832                                  1, minor);
1833         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1834                                  1, minor);
1835         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1836                                  1, minor);
1837         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1838                                  1, minor);
1839 }
1840
1841 #endif /* CONFIG_DEBUG_FS */