drm/radeon/kms: add thermal chip quirk for asus 9600xt
[pandora-kernel.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 "drmP.h"
33 #include "drm.h"
34 #include "intel_drv.h"
35 #include "intel_ringbuffer.h"
36 #include "i915_drm.h"
37 #include "i915_drv.h"
38
39 #define DRM_I915_RING_DEBUG 1
40
41
42 #if defined(CONFIG_DEBUG_FS)
43
44 enum {
45         ACTIVE_LIST,
46         FLUSHING_LIST,
47         INACTIVE_LIST,
48         PINNED_LIST,
49         DEFERRED_FREE_LIST,
50 };
51
52 static const char *yesno(int v)
53 {
54         return v ? "yes" : "no";
55 }
56
57 static int i915_capabilities(struct seq_file *m, void *data)
58 {
59         struct drm_info_node *node = (struct drm_info_node *) m->private;
60         struct drm_device *dev = node->minor->dev;
61         const struct intel_device_info *info = INTEL_INFO(dev);
62
63         seq_printf(m, "gen: %d\n", info->gen);
64 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
65         B(is_mobile);
66         B(is_i85x);
67         B(is_i915g);
68         B(is_i945gm);
69         B(is_g33);
70         B(need_gfx_hws);
71         B(is_g4x);
72         B(is_pineview);
73         B(is_broadwater);
74         B(is_crestline);
75         B(has_fbc);
76         B(has_pipe_cxsr);
77         B(has_hotplug);
78         B(cursor_needs_physical);
79         B(has_overlay);
80         B(overlay_needs_physical);
81         B(supports_tv);
82         B(has_bsd_ring);
83         B(has_blt_ring);
84 #undef B
85
86         return 0;
87 }
88
89 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
90 {
91         if (obj->user_pin_count > 0)
92                 return "P";
93         else if (obj->pin_count > 0)
94                 return "p";
95         else
96                 return " ";
97 }
98
99 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
100 {
101     switch (obj->tiling_mode) {
102     default:
103     case I915_TILING_NONE: return " ";
104     case I915_TILING_X: return "X";
105     case I915_TILING_Y: return "Y";
106     }
107 }
108
109 static const char *cache_level_str(int type)
110 {
111         switch (type) {
112         case I915_CACHE_NONE: return " uncached";
113         case I915_CACHE_LLC: return " snooped (LLC)";
114         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
115         default: return "";
116         }
117 }
118
119 static void
120 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
121 {
122         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
123                    &obj->base,
124                    get_pin_flag(obj),
125                    get_tiling_flag(obj),
126                    obj->base.size,
127                    obj->base.read_domains,
128                    obj->base.write_domain,
129                    obj->last_rendering_seqno,
130                    obj->last_fenced_seqno,
131                    cache_level_str(obj->cache_level),
132                    obj->dirty ? " dirty" : "",
133                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
134         if (obj->base.name)
135                 seq_printf(m, " (name: %d)", obj->base.name);
136         if (obj->fence_reg != I915_FENCE_REG_NONE)
137                 seq_printf(m, " (fence: %d)", obj->fence_reg);
138         if (obj->gtt_space != NULL)
139                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
140                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
141         if (obj->pin_mappable || obj->fault_mappable) {
142                 char s[3], *t = s;
143                 if (obj->pin_mappable)
144                         *t++ = 'p';
145                 if (obj->fault_mappable)
146                         *t++ = 'f';
147                 *t = '\0';
148                 seq_printf(m, " (%s mappable)", s);
149         }
150         if (obj->ring != NULL)
151                 seq_printf(m, " (%s)", obj->ring->name);
152 }
153
154 static int i915_gem_object_list_info(struct seq_file *m, void *data)
155 {
156         struct drm_info_node *node = (struct drm_info_node *) m->private;
157         uintptr_t list = (uintptr_t) node->info_ent->data;
158         struct list_head *head;
159         struct drm_device *dev = node->minor->dev;
160         drm_i915_private_t *dev_priv = dev->dev_private;
161         struct drm_i915_gem_object *obj;
162         size_t total_obj_size, total_gtt_size;
163         int count, ret;
164
165         ret = mutex_lock_interruptible(&dev->struct_mutex);
166         if (ret)
167                 return ret;
168
169         switch (list) {
170         case ACTIVE_LIST:
171                 seq_printf(m, "Active:\n");
172                 head = &dev_priv->mm.active_list;
173                 break;
174         case INACTIVE_LIST:
175                 seq_printf(m, "Inactive:\n");
176                 head = &dev_priv->mm.inactive_list;
177                 break;
178         case PINNED_LIST:
179                 seq_printf(m, "Pinned:\n");
180                 head = &dev_priv->mm.pinned_list;
181                 break;
182         case FLUSHING_LIST:
183                 seq_printf(m, "Flushing:\n");
184                 head = &dev_priv->mm.flushing_list;
185                 break;
186         case DEFERRED_FREE_LIST:
187                 seq_printf(m, "Deferred free:\n");
188                 head = &dev_priv->mm.deferred_free_list;
189                 break;
190         default:
191                 mutex_unlock(&dev->struct_mutex);
192                 return -EINVAL;
193         }
194
195         total_obj_size = total_gtt_size = count = 0;
196         list_for_each_entry(obj, head, mm_list) {
197                 seq_printf(m, "   ");
198                 describe_obj(m, obj);
199                 seq_printf(m, "\n");
200                 total_obj_size += obj->base.size;
201                 total_gtt_size += obj->gtt_space->size;
202                 count++;
203         }
204         mutex_unlock(&dev->struct_mutex);
205
206         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
207                    count, total_obj_size, total_gtt_size);
208         return 0;
209 }
210
211 #define count_objects(list, member) do { \
212         list_for_each_entry(obj, list, member) { \
213                 size += obj->gtt_space->size; \
214                 ++count; \
215                 if (obj->map_and_fenceable) { \
216                         mappable_size += obj->gtt_space->size; \
217                         ++mappable_count; \
218                 } \
219         } \
220 } while(0)
221
222 static int i915_gem_object_info(struct seq_file *m, void* data)
223 {
224         struct drm_info_node *node = (struct drm_info_node *) m->private;
225         struct drm_device *dev = node->minor->dev;
226         struct drm_i915_private *dev_priv = dev->dev_private;
227         u32 count, mappable_count;
228         size_t size, mappable_size;
229         struct drm_i915_gem_object *obj;
230         int ret;
231
232         ret = mutex_lock_interruptible(&dev->struct_mutex);
233         if (ret)
234                 return ret;
235
236         seq_printf(m, "%u objects, %zu bytes\n",
237                    dev_priv->mm.object_count,
238                    dev_priv->mm.object_memory);
239
240         size = count = mappable_size = mappable_count = 0;
241         count_objects(&dev_priv->mm.gtt_list, gtt_list);
242         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
243                    count, mappable_count, size, mappable_size);
244
245         size = count = mappable_size = mappable_count = 0;
246         count_objects(&dev_priv->mm.active_list, mm_list);
247         count_objects(&dev_priv->mm.flushing_list, mm_list);
248         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
249                    count, mappable_count, size, mappable_size);
250
251         size = count = mappable_size = mappable_count = 0;
252         count_objects(&dev_priv->mm.pinned_list, mm_list);
253         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
254                    count, mappable_count, size, mappable_size);
255
256         size = count = mappable_size = mappable_count = 0;
257         count_objects(&dev_priv->mm.inactive_list, mm_list);
258         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
259                    count, mappable_count, size, mappable_size);
260
261         size = count = mappable_size = mappable_count = 0;
262         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
263         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
264                    count, mappable_count, size, mappable_size);
265
266         size = count = mappable_size = mappable_count = 0;
267         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
268                 if (obj->fault_mappable) {
269                         size += obj->gtt_space->size;
270                         ++count;
271                 }
272                 if (obj->pin_mappable) {
273                         mappable_size += obj->gtt_space->size;
274                         ++mappable_count;
275                 }
276         }
277         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
278                    mappable_count, mappable_size);
279         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
280                    count, size);
281
282         seq_printf(m, "%zu [%zu] gtt total\n",
283                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
284
285         mutex_unlock(&dev->struct_mutex);
286
287         return 0;
288 }
289
290 static int i915_gem_gtt_info(struct seq_file *m, void* data)
291 {
292         struct drm_info_node *node = (struct drm_info_node *) m->private;
293         struct drm_device *dev = node->minor->dev;
294         struct drm_i915_private *dev_priv = dev->dev_private;
295         struct drm_i915_gem_object *obj;
296         size_t total_obj_size, total_gtt_size;
297         int count, ret;
298
299         ret = mutex_lock_interruptible(&dev->struct_mutex);
300         if (ret)
301                 return ret;
302
303         total_obj_size = total_gtt_size = count = 0;
304         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
305                 seq_printf(m, "   ");
306                 describe_obj(m, obj);
307                 seq_printf(m, "\n");
308                 total_obj_size += obj->base.size;
309                 total_gtt_size += obj->gtt_space->size;
310                 count++;
311         }
312
313         mutex_unlock(&dev->struct_mutex);
314
315         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
316                    count, total_obj_size, total_gtt_size);
317
318         return 0;
319 }
320
321
322 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
323 {
324         struct drm_info_node *node = (struct drm_info_node *) m->private;
325         struct drm_device *dev = node->minor->dev;
326         unsigned long flags;
327         struct intel_crtc *crtc;
328
329         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
330                 const char pipe = pipe_name(crtc->pipe);
331                 const char plane = plane_name(crtc->plane);
332                 struct intel_unpin_work *work;
333
334                 spin_lock_irqsave(&dev->event_lock, flags);
335                 work = crtc->unpin_work;
336                 if (work == NULL) {
337                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
338                                    pipe, plane);
339                 } else {
340                         if (!work->pending) {
341                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
342                                            pipe, plane);
343                         } else {
344                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
345                                            pipe, plane);
346                         }
347                         if (work->enable_stall_check)
348                                 seq_printf(m, "Stall check enabled, ");
349                         else
350                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
351                         seq_printf(m, "%d prepares\n", work->pending);
352
353                         if (work->old_fb_obj) {
354                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
355                                 if (obj)
356                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
357                         }
358                         if (work->pending_flip_obj) {
359                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
360                                 if (obj)
361                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
362                         }
363                 }
364                 spin_unlock_irqrestore(&dev->event_lock, flags);
365         }
366
367         return 0;
368 }
369
370 static int i915_gem_request_info(struct seq_file *m, void *data)
371 {
372         struct drm_info_node *node = (struct drm_info_node *) m->private;
373         struct drm_device *dev = node->minor->dev;
374         drm_i915_private_t *dev_priv = dev->dev_private;
375         struct drm_i915_gem_request *gem_request;
376         int ret, count;
377
378         ret = mutex_lock_interruptible(&dev->struct_mutex);
379         if (ret)
380                 return ret;
381
382         count = 0;
383         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
384                 seq_printf(m, "Render requests:\n");
385                 list_for_each_entry(gem_request,
386                                     &dev_priv->ring[RCS].request_list,
387                                     list) {
388                         seq_printf(m, "    %d @ %d\n",
389                                    gem_request->seqno,
390                                    (int) (jiffies - gem_request->emitted_jiffies));
391                 }
392                 count++;
393         }
394         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
395                 seq_printf(m, "BSD requests:\n");
396                 list_for_each_entry(gem_request,
397                                     &dev_priv->ring[VCS].request_list,
398                                     list) {
399                         seq_printf(m, "    %d @ %d\n",
400                                    gem_request->seqno,
401                                    (int) (jiffies - gem_request->emitted_jiffies));
402                 }
403                 count++;
404         }
405         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
406                 seq_printf(m, "BLT requests:\n");
407                 list_for_each_entry(gem_request,
408                                     &dev_priv->ring[BCS].request_list,
409                                     list) {
410                         seq_printf(m, "    %d @ %d\n",
411                                    gem_request->seqno,
412                                    (int) (jiffies - gem_request->emitted_jiffies));
413                 }
414                 count++;
415         }
416         mutex_unlock(&dev->struct_mutex);
417
418         if (count == 0)
419                 seq_printf(m, "No requests\n");
420
421         return 0;
422 }
423
424 static void i915_ring_seqno_info(struct seq_file *m,
425                                  struct intel_ring_buffer *ring)
426 {
427         if (ring->get_seqno) {
428                 seq_printf(m, "Current sequence (%s): %d\n",
429                            ring->name, ring->get_seqno(ring));
430                 seq_printf(m, "Waiter sequence (%s):  %d\n",
431                            ring->name, ring->waiting_seqno);
432                 seq_printf(m, "IRQ sequence (%s):     %d\n",
433                            ring->name, ring->irq_seqno);
434         }
435 }
436
437 static int i915_gem_seqno_info(struct seq_file *m, void *data)
438 {
439         struct drm_info_node *node = (struct drm_info_node *) m->private;
440         struct drm_device *dev = node->minor->dev;
441         drm_i915_private_t *dev_priv = dev->dev_private;
442         int ret, i;
443
444         ret = mutex_lock_interruptible(&dev->struct_mutex);
445         if (ret)
446                 return ret;
447
448         for (i = 0; i < I915_NUM_RINGS; i++)
449                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
450
451         mutex_unlock(&dev->struct_mutex);
452
453         return 0;
454 }
455
456
457 static int i915_interrupt_info(struct seq_file *m, void *data)
458 {
459         struct drm_info_node *node = (struct drm_info_node *) m->private;
460         struct drm_device *dev = node->minor->dev;
461         drm_i915_private_t *dev_priv = dev->dev_private;
462         int ret, i, pipe;
463
464         ret = mutex_lock_interruptible(&dev->struct_mutex);
465         if (ret)
466                 return ret;
467
468         if (!HAS_PCH_SPLIT(dev)) {
469                 seq_printf(m, "Interrupt enable:    %08x\n",
470                            I915_READ(IER));
471                 seq_printf(m, "Interrupt identity:  %08x\n",
472                            I915_READ(IIR));
473                 seq_printf(m, "Interrupt mask:      %08x\n",
474                            I915_READ(IMR));
475                 for_each_pipe(pipe)
476                         seq_printf(m, "Pipe %c stat:         %08x\n",
477                                    pipe_name(pipe),
478                                    I915_READ(PIPESTAT(pipe)));
479         } else {
480                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
481                            I915_READ(DEIER));
482                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
483                            I915_READ(DEIIR));
484                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
485                            I915_READ(DEIMR));
486                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
487                            I915_READ(SDEIER));
488                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
489                            I915_READ(SDEIIR));
490                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
491                            I915_READ(SDEIMR));
492                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
493                            I915_READ(GTIER));
494                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
495                            I915_READ(GTIIR));
496                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
497                            I915_READ(GTIMR));
498         }
499         seq_printf(m, "Interrupts received: %d\n",
500                    atomic_read(&dev_priv->irq_received));
501         for (i = 0; i < I915_NUM_RINGS; i++) {
502                 if (IS_GEN6(dev)) {
503                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
504                                    dev_priv->ring[i].name,
505                                    I915_READ_IMR(&dev_priv->ring[i]));
506                 }
507                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
508         }
509         mutex_unlock(&dev->struct_mutex);
510
511         return 0;
512 }
513
514 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
515 {
516         struct drm_info_node *node = (struct drm_info_node *) m->private;
517         struct drm_device *dev = node->minor->dev;
518         drm_i915_private_t *dev_priv = dev->dev_private;
519         int i, ret;
520
521         ret = mutex_lock_interruptible(&dev->struct_mutex);
522         if (ret)
523                 return ret;
524
525         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
526         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
527         for (i = 0; i < dev_priv->num_fence_regs; i++) {
528                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
529
530                 seq_printf(m, "Fenced object[%2d] = ", i);
531                 if (obj == NULL)
532                         seq_printf(m, "unused");
533                 else
534                         describe_obj(m, obj);
535                 seq_printf(m, "\n");
536         }
537
538         mutex_unlock(&dev->struct_mutex);
539         return 0;
540 }
541
542 static int i915_hws_info(struct seq_file *m, void *data)
543 {
544         struct drm_info_node *node = (struct drm_info_node *) m->private;
545         struct drm_device *dev = node->minor->dev;
546         drm_i915_private_t *dev_priv = dev->dev_private;
547         struct intel_ring_buffer *ring;
548         const volatile u32 __iomem *hws;
549         int i;
550
551         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
552         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
553         if (hws == NULL)
554                 return 0;
555
556         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
557                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
558                            i * 4,
559                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
560         }
561         return 0;
562 }
563
564 static void i915_dump_object(struct seq_file *m,
565                              struct io_mapping *mapping,
566                              struct drm_i915_gem_object *obj)
567 {
568         int page, page_count, i;
569
570         page_count = obj->base.size / PAGE_SIZE;
571         for (page = 0; page < page_count; page++) {
572                 u32 *mem = io_mapping_map_wc(mapping,
573                                              obj->gtt_offset + page * PAGE_SIZE);
574                 for (i = 0; i < PAGE_SIZE; i += 4)
575                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
576                 io_mapping_unmap(mem);
577         }
578 }
579
580 static int i915_batchbuffer_info(struct seq_file *m, void *data)
581 {
582         struct drm_info_node *node = (struct drm_info_node *) m->private;
583         struct drm_device *dev = node->minor->dev;
584         drm_i915_private_t *dev_priv = dev->dev_private;
585         struct drm_i915_gem_object *obj;
586         int ret;
587
588         ret = mutex_lock_interruptible(&dev->struct_mutex);
589         if (ret)
590                 return ret;
591
592         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
593                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
594                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
595                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
596                 }
597         }
598
599         mutex_unlock(&dev->struct_mutex);
600         return 0;
601 }
602
603 static int i915_ringbuffer_data(struct seq_file *m, void *data)
604 {
605         struct drm_info_node *node = (struct drm_info_node *) m->private;
606         struct drm_device *dev = node->minor->dev;
607         drm_i915_private_t *dev_priv = dev->dev_private;
608         struct intel_ring_buffer *ring;
609         int ret;
610
611         ret = mutex_lock_interruptible(&dev->struct_mutex);
612         if (ret)
613                 return ret;
614
615         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
616         if (!ring->obj) {
617                 seq_printf(m, "No ringbuffer setup\n");
618         } else {
619                 const u8 __iomem *virt = ring->virtual_start;
620                 uint32_t off;
621
622                 for (off = 0; off < ring->size; off += 4) {
623                         uint32_t *ptr = (uint32_t *)(virt + off);
624                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
625                 }
626         }
627         mutex_unlock(&dev->struct_mutex);
628
629         return 0;
630 }
631
632 static int i915_ringbuffer_info(struct seq_file *m, void *data)
633 {
634         struct drm_info_node *node = (struct drm_info_node *) m->private;
635         struct drm_device *dev = node->minor->dev;
636         drm_i915_private_t *dev_priv = dev->dev_private;
637         struct intel_ring_buffer *ring;
638
639         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
640         if (ring->size == 0)
641                 return 0;
642
643         seq_printf(m, "Ring %s:\n", ring->name);
644         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
645         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
646         seq_printf(m, "  Size :    %08x\n", ring->size);
647         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
648         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
649         if (IS_GEN6(dev)) {
650                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
651                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
652         }
653         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
654         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
655
656         return 0;
657 }
658
659 static const char *ring_str(int ring)
660 {
661         switch (ring) {
662         case RING_RENDER: return " render";
663         case RING_BSD: return " bsd";
664         case RING_BLT: return " blt";
665         default: return "";
666         }
667 }
668
669 static const char *pin_flag(int pinned)
670 {
671         if (pinned > 0)
672                 return " P";
673         else if (pinned < 0)
674                 return " p";
675         else
676                 return "";
677 }
678
679 static const char *tiling_flag(int tiling)
680 {
681         switch (tiling) {
682         default:
683         case I915_TILING_NONE: return "";
684         case I915_TILING_X: return " X";
685         case I915_TILING_Y: return " Y";
686         }
687 }
688
689 static const char *dirty_flag(int dirty)
690 {
691         return dirty ? " dirty" : "";
692 }
693
694 static const char *purgeable_flag(int purgeable)
695 {
696         return purgeable ? " purgeable" : "";
697 }
698
699 static void print_error_buffers(struct seq_file *m,
700                                 const char *name,
701                                 struct drm_i915_error_buffer *err,
702                                 int count)
703 {
704         seq_printf(m, "%s [%d]:\n", name, count);
705
706         while (count--) {
707                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
708                            err->gtt_offset,
709                            err->size,
710                            err->read_domains,
711                            err->write_domain,
712                            err->seqno,
713                            pin_flag(err->pinned),
714                            tiling_flag(err->tiling),
715                            dirty_flag(err->dirty),
716                            purgeable_flag(err->purgeable),
717                            ring_str(err->ring),
718                            cache_level_str(err->cache_level));
719
720                 if (err->name)
721                         seq_printf(m, " (name: %d)", err->name);
722                 if (err->fence_reg != I915_FENCE_REG_NONE)
723                         seq_printf(m, " (fence: %d)", err->fence_reg);
724
725                 seq_printf(m, "\n");
726                 err++;
727         }
728 }
729
730 static int i915_error_state(struct seq_file *m, void *unused)
731 {
732         struct drm_info_node *node = (struct drm_info_node *) m->private;
733         struct drm_device *dev = node->minor->dev;
734         drm_i915_private_t *dev_priv = dev->dev_private;
735         struct drm_i915_error_state *error;
736         unsigned long flags;
737         int i, page, offset, elt;
738
739         spin_lock_irqsave(&dev_priv->error_lock, flags);
740         if (!dev_priv->first_error) {
741                 seq_printf(m, "no error state collected\n");
742                 goto out;
743         }
744
745         error = dev_priv->first_error;
746
747         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
748                    error->time.tv_usec);
749         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
750         seq_printf(m, "EIR: 0x%08x\n", error->eir);
751         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
752         if (INTEL_INFO(dev)->gen >= 6) {
753                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
754                 seq_printf(m, "Blitter command stream:\n");
755                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
756                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
757                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
758                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
759                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
760                 seq_printf(m, "Video (BSD) command stream:\n");
761                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
762                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
763                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
764                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
765                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
766         }
767         seq_printf(m, "Render command stream:\n");
768         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
769         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
770         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
771         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
772         if (INTEL_INFO(dev)->gen >= 4) {
773                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
774                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
775         }
776         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
777         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
778
779         for (i = 0; i < dev_priv->num_fence_regs; i++)
780                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
781
782         if (error->active_bo)
783                 print_error_buffers(m, "Active",
784                                     error->active_bo,
785                                     error->active_bo_count);
786
787         if (error->pinned_bo)
788                 print_error_buffers(m, "Pinned",
789                                     error->pinned_bo,
790                                     error->pinned_bo_count);
791
792         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
793                 if (error->batchbuffer[i]) {
794                         struct drm_i915_error_object *obj = error->batchbuffer[i];
795
796                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
797                                    dev_priv->ring[i].name,
798                                    obj->gtt_offset);
799                         offset = 0;
800                         for (page = 0; page < obj->page_count; page++) {
801                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
802                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
803                                         offset += 4;
804                                 }
805                         }
806                 }
807         }
808
809         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
810                 if (error->ringbuffer[i]) {
811                         struct drm_i915_error_object *obj = error->ringbuffer[i];
812                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
813                                    dev_priv->ring[i].name,
814                                    obj->gtt_offset);
815                         offset = 0;
816                         for (page = 0; page < obj->page_count; page++) {
817                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
818                                         seq_printf(m, "%08x :  %08x\n",
819                                                    offset,
820                                                    obj->pages[page][elt]);
821                                         offset += 4;
822                                 }
823                         }
824                 }
825         }
826
827         if (error->overlay)
828                 intel_overlay_print_error_state(m, error->overlay);
829
830         if (error->display)
831                 intel_display_print_error_state(m, dev, error->display);
832
833 out:
834         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
835
836         return 0;
837 }
838
839 static int i915_rstdby_delays(struct seq_file *m, void *unused)
840 {
841         struct drm_info_node *node = (struct drm_info_node *) m->private;
842         struct drm_device *dev = node->minor->dev;
843         drm_i915_private_t *dev_priv = dev->dev_private;
844         u16 crstanddelay = I915_READ16(CRSTANDVID);
845
846         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
847
848         return 0;
849 }
850
851 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
852 {
853         struct drm_info_node *node = (struct drm_info_node *) m->private;
854         struct drm_device *dev = node->minor->dev;
855         drm_i915_private_t *dev_priv = dev->dev_private;
856         int ret;
857
858         if (IS_GEN5(dev)) {
859                 u16 rgvswctl = I915_READ16(MEMSWCTL);
860                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
861
862                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
863                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
864                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
865                            MEMSTAT_VID_SHIFT);
866                 seq_printf(m, "Current P-state: %d\n",
867                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
868         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
869                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
870                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
871                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
872                 u32 rpstat;
873                 u32 rpupei, rpcurup, rpprevup;
874                 u32 rpdownei, rpcurdown, rpprevdown;
875                 int max_freq;
876
877                 /* RPSTAT1 is in the GT power well */
878                 ret = mutex_lock_interruptible(&dev->struct_mutex);
879                 if (ret)
880                         return ret;
881
882                 gen6_gt_force_wake_get(dev_priv);
883
884                 rpstat = I915_READ(GEN6_RPSTAT1);
885                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
886                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
887                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
888                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
889                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
890                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
891
892                 gen6_gt_force_wake_put(dev_priv);
893                 mutex_unlock(&dev->struct_mutex);
894
895                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
896                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
897                 seq_printf(m, "Render p-state ratio: %d\n",
898                            (gt_perf_status & 0xff00) >> 8);
899                 seq_printf(m, "Render p-state VID: %d\n",
900                            gt_perf_status & 0xff);
901                 seq_printf(m, "Render p-state limit: %d\n",
902                            rp_state_limits & 0xff);
903                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
904                                                 GEN6_CAGF_SHIFT) * 50);
905                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
906                            GEN6_CURICONT_MASK);
907                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
908                            GEN6_CURBSYTAVG_MASK);
909                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
910                            GEN6_CURBSYTAVG_MASK);
911                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
912                            GEN6_CURIAVG_MASK);
913                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
914                            GEN6_CURBSYTAVG_MASK);
915                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
916                            GEN6_CURBSYTAVG_MASK);
917
918                 max_freq = (rp_state_cap & 0xff0000) >> 16;
919                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
920                            max_freq * 50);
921
922                 max_freq = (rp_state_cap & 0xff00) >> 8;
923                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
924                            max_freq * 50);
925
926                 max_freq = rp_state_cap & 0xff;
927                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
928                            max_freq * 50);
929         } else {
930                 seq_printf(m, "no P-state info available\n");
931         }
932
933         return 0;
934 }
935
936 static int i915_delayfreq_table(struct seq_file *m, void *unused)
937 {
938         struct drm_info_node *node = (struct drm_info_node *) m->private;
939         struct drm_device *dev = node->minor->dev;
940         drm_i915_private_t *dev_priv = dev->dev_private;
941         u32 delayfreq;
942         int i;
943
944         for (i = 0; i < 16; i++) {
945                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
946                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
947                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
948         }
949
950         return 0;
951 }
952
953 static inline int MAP_TO_MV(int map)
954 {
955         return 1250 - (map * 25);
956 }
957
958 static int i915_inttoext_table(struct seq_file *m, void *unused)
959 {
960         struct drm_info_node *node = (struct drm_info_node *) m->private;
961         struct drm_device *dev = node->minor->dev;
962         drm_i915_private_t *dev_priv = dev->dev_private;
963         u32 inttoext;
964         int i;
965
966         for (i = 1; i <= 32; i++) {
967                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
968                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
969         }
970
971         return 0;
972 }
973
974 static int i915_drpc_info(struct seq_file *m, void *unused)
975 {
976         struct drm_info_node *node = (struct drm_info_node *) m->private;
977         struct drm_device *dev = node->minor->dev;
978         drm_i915_private_t *dev_priv = dev->dev_private;
979         u32 rgvmodectl = I915_READ(MEMMODECTL);
980         u32 rstdbyctl = I915_READ(RSTDBYCTL);
981         u16 crstandvid = I915_READ16(CRSTANDVID);
982
983         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
984                    "yes" : "no");
985         seq_printf(m, "Boost freq: %d\n",
986                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
987                    MEMMODE_BOOST_FREQ_SHIFT);
988         seq_printf(m, "HW control enabled: %s\n",
989                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
990         seq_printf(m, "SW control enabled: %s\n",
991                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
992         seq_printf(m, "Gated voltage change: %s\n",
993                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
994         seq_printf(m, "Starting frequency: P%d\n",
995                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
996         seq_printf(m, "Max P-state: P%d\n",
997                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
998         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
999         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1000         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1001         seq_printf(m, "Render standby enabled: %s\n",
1002                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1003         seq_printf(m, "Current RS state: ");
1004         switch (rstdbyctl & RSX_STATUS_MASK) {
1005         case RSX_STATUS_ON:
1006                 seq_printf(m, "on\n");
1007                 break;
1008         case RSX_STATUS_RC1:
1009                 seq_printf(m, "RC1\n");
1010                 break;
1011         case RSX_STATUS_RC1E:
1012                 seq_printf(m, "RC1E\n");
1013                 break;
1014         case RSX_STATUS_RS1:
1015                 seq_printf(m, "RS1\n");
1016                 break;
1017         case RSX_STATUS_RS2:
1018                 seq_printf(m, "RS2 (RC6)\n");
1019                 break;
1020         case RSX_STATUS_RS3:
1021                 seq_printf(m, "RC3 (RC6+)\n");
1022                 break;
1023         default:
1024                 seq_printf(m, "unknown\n");
1025                 break;
1026         }
1027
1028         return 0;
1029 }
1030
1031 static int i915_fbc_status(struct seq_file *m, void *unused)
1032 {
1033         struct drm_info_node *node = (struct drm_info_node *) m->private;
1034         struct drm_device *dev = node->minor->dev;
1035         drm_i915_private_t *dev_priv = dev->dev_private;
1036
1037         if (!I915_HAS_FBC(dev)) {
1038                 seq_printf(m, "FBC unsupported on this chipset\n");
1039                 return 0;
1040         }
1041
1042         if (intel_fbc_enabled(dev)) {
1043                 seq_printf(m, "FBC enabled\n");
1044         } else {
1045                 seq_printf(m, "FBC disabled: ");
1046                 switch (dev_priv->no_fbc_reason) {
1047                 case FBC_NO_OUTPUT:
1048                         seq_printf(m, "no outputs");
1049                         break;
1050                 case FBC_STOLEN_TOO_SMALL:
1051                         seq_printf(m, "not enough stolen memory");
1052                         break;
1053                 case FBC_UNSUPPORTED_MODE:
1054                         seq_printf(m, "mode not supported");
1055                         break;
1056                 case FBC_MODE_TOO_LARGE:
1057                         seq_printf(m, "mode too large");
1058                         break;
1059                 case FBC_BAD_PLANE:
1060                         seq_printf(m, "FBC unsupported on plane");
1061                         break;
1062                 case FBC_NOT_TILED:
1063                         seq_printf(m, "scanout buffer not tiled");
1064                         break;
1065                 case FBC_MULTIPLE_PIPES:
1066                         seq_printf(m, "multiple pipes are enabled");
1067                         break;
1068                 case FBC_MODULE_PARAM:
1069                         seq_printf(m, "disabled per module param (default off)");
1070                         break;
1071                 default:
1072                         seq_printf(m, "unknown reason");
1073                 }
1074                 seq_printf(m, "\n");
1075         }
1076         return 0;
1077 }
1078
1079 static int i915_sr_status(struct seq_file *m, void *unused)
1080 {
1081         struct drm_info_node *node = (struct drm_info_node *) m->private;
1082         struct drm_device *dev = node->minor->dev;
1083         drm_i915_private_t *dev_priv = dev->dev_private;
1084         bool sr_enabled = false;
1085
1086         if (HAS_PCH_SPLIT(dev))
1087                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1088         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1089                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1090         else if (IS_I915GM(dev))
1091                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1092         else if (IS_PINEVIEW(dev))
1093                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1094
1095         seq_printf(m, "self-refresh: %s\n",
1096                    sr_enabled ? "enabled" : "disabled");
1097
1098         return 0;
1099 }
1100
1101 static int i915_emon_status(struct seq_file *m, void *unused)
1102 {
1103         struct drm_info_node *node = (struct drm_info_node *) m->private;
1104         struct drm_device *dev = node->minor->dev;
1105         drm_i915_private_t *dev_priv = dev->dev_private;
1106         unsigned long temp, chipset, gfx;
1107         int ret;
1108
1109         ret = mutex_lock_interruptible(&dev->struct_mutex);
1110         if (ret)
1111                 return ret;
1112
1113         temp = i915_mch_val(dev_priv);
1114         chipset = i915_chipset_val(dev_priv);
1115         gfx = i915_gfx_val(dev_priv);
1116         mutex_unlock(&dev->struct_mutex);
1117
1118         seq_printf(m, "GMCH temp: %ld\n", temp);
1119         seq_printf(m, "Chipset power: %ld\n", chipset);
1120         seq_printf(m, "GFX power: %ld\n", gfx);
1121         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1122
1123         return 0;
1124 }
1125
1126 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1127 {
1128         struct drm_info_node *node = (struct drm_info_node *) m->private;
1129         struct drm_device *dev = node->minor->dev;
1130         drm_i915_private_t *dev_priv = dev->dev_private;
1131         int ret;
1132         int gpu_freq, ia_freq;
1133
1134         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1135                 seq_printf(m, "unsupported on this chipset\n");
1136                 return 0;
1137         }
1138
1139         ret = mutex_lock_interruptible(&dev->struct_mutex);
1140         if (ret)
1141                 return ret;
1142
1143         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1144
1145         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1146              gpu_freq++) {
1147                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1148                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1149                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1150                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1151                               GEN6_PCODE_READY) == 0, 10)) {
1152                         DRM_ERROR("pcode read of freq table timed out\n");
1153                         continue;
1154                 }
1155                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1156                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1157         }
1158
1159         mutex_unlock(&dev->struct_mutex);
1160
1161         return 0;
1162 }
1163
1164 static int i915_gfxec(struct seq_file *m, void *unused)
1165 {
1166         struct drm_info_node *node = (struct drm_info_node *) m->private;
1167         struct drm_device *dev = node->minor->dev;
1168         drm_i915_private_t *dev_priv = dev->dev_private;
1169
1170         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1171
1172         return 0;
1173 }
1174
1175 static int i915_opregion(struct seq_file *m, void *unused)
1176 {
1177         struct drm_info_node *node = (struct drm_info_node *) m->private;
1178         struct drm_device *dev = node->minor->dev;
1179         drm_i915_private_t *dev_priv = dev->dev_private;
1180         struct intel_opregion *opregion = &dev_priv->opregion;
1181         int ret;
1182
1183         ret = mutex_lock_interruptible(&dev->struct_mutex);
1184         if (ret)
1185                 return ret;
1186
1187         if (opregion->header)
1188                 seq_write(m, opregion->header, OPREGION_SIZE);
1189
1190         mutex_unlock(&dev->struct_mutex);
1191
1192         return 0;
1193 }
1194
1195 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1196 {
1197         struct drm_info_node *node = (struct drm_info_node *) m->private;
1198         struct drm_device *dev = node->minor->dev;
1199         drm_i915_private_t *dev_priv = dev->dev_private;
1200         struct intel_fbdev *ifbdev;
1201         struct intel_framebuffer *fb;
1202         int ret;
1203
1204         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1205         if (ret)
1206                 return ret;
1207
1208         ifbdev = dev_priv->fbdev;
1209         fb = to_intel_framebuffer(ifbdev->helper.fb);
1210
1211         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1212                    fb->base.width,
1213                    fb->base.height,
1214                    fb->base.depth,
1215                    fb->base.bits_per_pixel);
1216         describe_obj(m, fb->obj);
1217         seq_printf(m, "\n");
1218
1219         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1220                 if (&fb->base == ifbdev->helper.fb)
1221                         continue;
1222
1223                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1224                            fb->base.width,
1225                            fb->base.height,
1226                            fb->base.depth,
1227                            fb->base.bits_per_pixel);
1228                 describe_obj(m, fb->obj);
1229                 seq_printf(m, "\n");
1230         }
1231
1232         mutex_unlock(&dev->mode_config.mutex);
1233
1234         return 0;
1235 }
1236
1237 static int i915_context_status(struct seq_file *m, void *unused)
1238 {
1239         struct drm_info_node *node = (struct drm_info_node *) m->private;
1240         struct drm_device *dev = node->minor->dev;
1241         drm_i915_private_t *dev_priv = dev->dev_private;
1242         int ret;
1243
1244         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1245         if (ret)
1246                 return ret;
1247
1248         if (dev_priv->pwrctx) {
1249                 seq_printf(m, "power context ");
1250                 describe_obj(m, dev_priv->pwrctx);
1251                 seq_printf(m, "\n");
1252         }
1253
1254         if (dev_priv->renderctx) {
1255                 seq_printf(m, "render context ");
1256                 describe_obj(m, dev_priv->renderctx);
1257                 seq_printf(m, "\n");
1258         }
1259
1260         mutex_unlock(&dev->mode_config.mutex);
1261
1262         return 0;
1263 }
1264
1265 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1266 {
1267         struct drm_info_node *node = (struct drm_info_node *) m->private;
1268         struct drm_device *dev = node->minor->dev;
1269         struct drm_i915_private *dev_priv = dev->dev_private;
1270
1271         seq_printf(m, "forcewake count = %d\n",
1272                    atomic_read(&dev_priv->forcewake_count));
1273
1274         return 0;
1275 }
1276
1277 static int
1278 i915_wedged_open(struct inode *inode,
1279                  struct file *filp)
1280 {
1281         filp->private_data = inode->i_private;
1282         return 0;
1283 }
1284
1285 static ssize_t
1286 i915_wedged_read(struct file *filp,
1287                  char __user *ubuf,
1288                  size_t max,
1289                  loff_t *ppos)
1290 {
1291         struct drm_device *dev = filp->private_data;
1292         drm_i915_private_t *dev_priv = dev->dev_private;
1293         char buf[80];
1294         int len;
1295
1296         len = snprintf(buf, sizeof (buf),
1297                        "wedged :  %d\n",
1298                        atomic_read(&dev_priv->mm.wedged));
1299
1300         if (len > sizeof (buf))
1301                 len = sizeof (buf);
1302
1303         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1304 }
1305
1306 static ssize_t
1307 i915_wedged_write(struct file *filp,
1308                   const char __user *ubuf,
1309                   size_t cnt,
1310                   loff_t *ppos)
1311 {
1312         struct drm_device *dev = filp->private_data;
1313         char buf[20];
1314         int val = 1;
1315
1316         if (cnt > 0) {
1317                 if (cnt > sizeof (buf) - 1)
1318                         return -EINVAL;
1319
1320                 if (copy_from_user(buf, ubuf, cnt))
1321                         return -EFAULT;
1322                 buf[cnt] = 0;
1323
1324                 val = simple_strtoul(buf, NULL, 0);
1325         }
1326
1327         DRM_INFO("Manually setting wedged to %d\n", val);
1328         i915_handle_error(dev, val);
1329
1330         return cnt;
1331 }
1332
1333 static const struct file_operations i915_wedged_fops = {
1334         .owner = THIS_MODULE,
1335         .open = i915_wedged_open,
1336         .read = i915_wedged_read,
1337         .write = i915_wedged_write,
1338         .llseek = default_llseek,
1339 };
1340
1341 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1342  * allocated we need to hook into the minor for release. */
1343 static int
1344 drm_add_fake_info_node(struct drm_minor *minor,
1345                        struct dentry *ent,
1346                        const void *key)
1347 {
1348         struct drm_info_node *node;
1349
1350         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1351         if (node == NULL) {
1352                 debugfs_remove(ent);
1353                 return -ENOMEM;
1354         }
1355
1356         node->minor = minor;
1357         node->dent = ent;
1358         node->info_ent = (void *) key;
1359         list_add(&node->list, &minor->debugfs_nodes.list);
1360
1361         return 0;
1362 }
1363
1364 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1365 {
1366         struct drm_device *dev = minor->dev;
1367         struct dentry *ent;
1368
1369         ent = debugfs_create_file("i915_wedged",
1370                                   S_IRUGO | S_IWUSR,
1371                                   root, dev,
1372                                   &i915_wedged_fops);
1373         if (IS_ERR(ent))
1374                 return PTR_ERR(ent);
1375
1376         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1377 }
1378
1379 static int i915_forcewake_open(struct inode *inode, struct file *file)
1380 {
1381         struct drm_device *dev = inode->i_private;
1382         struct drm_i915_private *dev_priv = dev->dev_private;
1383         int ret;
1384
1385         if (!IS_GEN6(dev))
1386                 return 0;
1387
1388         ret = mutex_lock_interruptible(&dev->struct_mutex);
1389         if (ret)
1390                 return ret;
1391         gen6_gt_force_wake_get(dev_priv);
1392         mutex_unlock(&dev->struct_mutex);
1393
1394         return 0;
1395 }
1396
1397 int i915_forcewake_release(struct inode *inode, struct file *file)
1398 {
1399         struct drm_device *dev = inode->i_private;
1400         struct drm_i915_private *dev_priv = dev->dev_private;
1401
1402         if (!IS_GEN6(dev))
1403                 return 0;
1404
1405         /*
1406          * It's bad that we can potentially hang userspace if struct_mutex gets
1407          * forever stuck.  However, if we cannot acquire this lock it means that
1408          * almost certainly the driver has hung, is not unload-able. Therefore
1409          * hanging here is probably a minor inconvenience not to be seen my
1410          * almost every user.
1411          */
1412         mutex_lock(&dev->struct_mutex);
1413         gen6_gt_force_wake_put(dev_priv);
1414         mutex_unlock(&dev->struct_mutex);
1415
1416         return 0;
1417 }
1418
1419 static const struct file_operations i915_forcewake_fops = {
1420         .owner = THIS_MODULE,
1421         .open = i915_forcewake_open,
1422         .release = i915_forcewake_release,
1423 };
1424
1425 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1426 {
1427         struct drm_device *dev = minor->dev;
1428         struct dentry *ent;
1429
1430         ent = debugfs_create_file("i915_forcewake_user",
1431                                   S_IRUSR,
1432                                   root, dev,
1433                                   &i915_forcewake_fops);
1434         if (IS_ERR(ent))
1435                 return PTR_ERR(ent);
1436
1437         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1438 }
1439
1440 static struct drm_info_list i915_debugfs_list[] = {
1441         {"i915_capabilities", i915_capabilities, 0},
1442         {"i915_gem_objects", i915_gem_object_info, 0},
1443         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1444         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1445         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1446         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1447         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1448         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1449         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1450         {"i915_gem_request", i915_gem_request_info, 0},
1451         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1452         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1453         {"i915_gem_interrupt", i915_interrupt_info, 0},
1454         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1455         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1456         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1457         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1458         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1459         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1460         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1461         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1462         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1463         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1464         {"i915_error_state", i915_error_state, 0},
1465         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1466         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1467         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1468         {"i915_inttoext_table", i915_inttoext_table, 0},
1469         {"i915_drpc_info", i915_drpc_info, 0},
1470         {"i915_emon_status", i915_emon_status, 0},
1471         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1472         {"i915_gfxec", i915_gfxec, 0},
1473         {"i915_fbc_status", i915_fbc_status, 0},
1474         {"i915_sr_status", i915_sr_status, 0},
1475         {"i915_opregion", i915_opregion, 0},
1476         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1477         {"i915_context_status", i915_context_status, 0},
1478         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1479 };
1480 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1481
1482 int i915_debugfs_init(struct drm_minor *minor)
1483 {
1484         int ret;
1485
1486         ret = i915_wedged_create(minor->debugfs_root, minor);
1487         if (ret)
1488                 return ret;
1489
1490         ret = i915_forcewake_create(minor->debugfs_root, minor);
1491         if (ret)
1492                 return ret;
1493
1494         return drm_debugfs_create_files(i915_debugfs_list,
1495                                         I915_DEBUGFS_ENTRIES,
1496                                         minor->debugfs_root, minor);
1497 }
1498
1499 void i915_debugfs_cleanup(struct drm_minor *minor)
1500 {
1501         drm_debugfs_remove_files(i915_debugfs_list,
1502                                  I915_DEBUGFS_ENTRIES, minor);
1503         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1504                                  1, minor);
1505         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1506                                  1, minor);
1507 }
1508
1509 #endif /* CONFIG_DEBUG_FS */