Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
[linux-3.10.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 <drm/drmP.h>
34 #include "intel_drv.h"
35 #include "intel_ringbuffer.h"
36 #include <drm/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         INACTIVE_LIST,
47         PINNED_LIST,
48 };
49
50 static const char *yesno(int v)
51 {
52         return v ? "yes" : "no";
53 }
54
55 static int i915_capabilities(struct seq_file *m, void *data)
56 {
57         struct drm_info_node *node = (struct drm_info_node *) m->private;
58         struct drm_device *dev = node->minor->dev;
59         const struct intel_device_info *info = INTEL_INFO(dev);
60
61         seq_printf(m, "gen: %d\n", info->gen);
62         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
63 #define DEV_INFO_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
64 #define DEV_INFO_SEP ;
65         DEV_INFO_FLAGS;
66 #undef DEV_INFO_FLAG
67 #undef DEV_INFO_SEP
68
69         return 0;
70 }
71
72 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
73 {
74         if (obj->user_pin_count > 0)
75                 return "P";
76         else if (obj->pin_count > 0)
77                 return "p";
78         else
79                 return " ";
80 }
81
82 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
83 {
84         switch (obj->tiling_mode) {
85         default:
86         case I915_TILING_NONE: return " ";
87         case I915_TILING_X: return "X";
88         case I915_TILING_Y: return "Y";
89         }
90 }
91
92 static const char *cache_level_str(int type)
93 {
94         switch (type) {
95         case I915_CACHE_NONE: return " uncached";
96         case I915_CACHE_LLC: return " snooped (LLC)";
97         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
98         default: return "";
99         }
100 }
101
102 static void
103 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
104 {
105         seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d %d%s%s%s",
106                    &obj->base,
107                    get_pin_flag(obj),
108                    get_tiling_flag(obj),
109                    obj->base.size / 1024,
110                    obj->base.read_domains,
111                    obj->base.write_domain,
112                    obj->last_read_seqno,
113                    obj->last_write_seqno,
114                    obj->last_fenced_seqno,
115                    cache_level_str(obj->cache_level),
116                    obj->dirty ? " dirty" : "",
117                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
118         if (obj->base.name)
119                 seq_printf(m, " (name: %d)", obj->base.name);
120         if (obj->pin_count)
121                 seq_printf(m, " (pinned x %d)", obj->pin_count);
122         if (obj->fence_reg != I915_FENCE_REG_NONE)
123                 seq_printf(m, " (fence: %d)", obj->fence_reg);
124         if (obj->gtt_space != NULL)
125                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
126                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
127         if (obj->pin_mappable || obj->fault_mappable) {
128                 char s[3], *t = s;
129                 if (obj->pin_mappable)
130                         *t++ = 'p';
131                 if (obj->fault_mappable)
132                         *t++ = 'f';
133                 *t = '\0';
134                 seq_printf(m, " (%s mappable)", s);
135         }
136         if (obj->ring != NULL)
137                 seq_printf(m, " (%s)", obj->ring->name);
138 }
139
140 static int i915_gem_object_list_info(struct seq_file *m, void *data)
141 {
142         struct drm_info_node *node = (struct drm_info_node *) m->private;
143         uintptr_t list = (uintptr_t) node->info_ent->data;
144         struct list_head *head;
145         struct drm_device *dev = node->minor->dev;
146         drm_i915_private_t *dev_priv = dev->dev_private;
147         struct drm_i915_gem_object *obj;
148         size_t total_obj_size, total_gtt_size;
149         int count, ret;
150
151         ret = mutex_lock_interruptible(&dev->struct_mutex);
152         if (ret)
153                 return ret;
154
155         switch (list) {
156         case ACTIVE_LIST:
157                 seq_printf(m, "Active:\n");
158                 head = &dev_priv->mm.active_list;
159                 break;
160         case INACTIVE_LIST:
161                 seq_printf(m, "Inactive:\n");
162                 head = &dev_priv->mm.inactive_list;
163                 break;
164         default:
165                 mutex_unlock(&dev->struct_mutex);
166                 return -EINVAL;
167         }
168
169         total_obj_size = total_gtt_size = count = 0;
170         list_for_each_entry(obj, head, mm_list) {
171                 seq_printf(m, "   ");
172                 describe_obj(m, obj);
173                 seq_printf(m, "\n");
174                 total_obj_size += obj->base.size;
175                 total_gtt_size += obj->gtt_space->size;
176                 count++;
177         }
178         mutex_unlock(&dev->struct_mutex);
179
180         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
181                    count, total_obj_size, total_gtt_size);
182         return 0;
183 }
184
185 #define count_objects(list, member) do { \
186         list_for_each_entry(obj, list, member) { \
187                 size += obj->gtt_space->size; \
188                 ++count; \
189                 if (obj->map_and_fenceable) { \
190                         mappable_size += obj->gtt_space->size; \
191                         ++mappable_count; \
192                 } \
193         } \
194 } while (0)
195
196 static int i915_gem_object_info(struct seq_file *m, void* data)
197 {
198         struct drm_info_node *node = (struct drm_info_node *) m->private;
199         struct drm_device *dev = node->minor->dev;
200         struct drm_i915_private *dev_priv = dev->dev_private;
201         u32 count, mappable_count, purgeable_count;
202         size_t size, mappable_size, purgeable_size;
203         struct drm_i915_gem_object *obj;
204         int ret;
205
206         ret = mutex_lock_interruptible(&dev->struct_mutex);
207         if (ret)
208                 return ret;
209
210         seq_printf(m, "%u objects, %zu bytes\n",
211                    dev_priv->mm.object_count,
212                    dev_priv->mm.object_memory);
213
214         size = count = mappable_size = mappable_count = 0;
215         count_objects(&dev_priv->mm.bound_list, gtt_list);
216         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
217                    count, mappable_count, size, mappable_size);
218
219         size = count = mappable_size = mappable_count = 0;
220         count_objects(&dev_priv->mm.active_list, mm_list);
221         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
222                    count, mappable_count, size, mappable_size);
223
224         size = count = mappable_size = mappable_count = 0;
225         count_objects(&dev_priv->mm.inactive_list, mm_list);
226         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
227                    count, mappable_count, size, mappable_size);
228
229         size = count = purgeable_size = purgeable_count = 0;
230         list_for_each_entry(obj, &dev_priv->mm.unbound_list, gtt_list) {
231                 size += obj->base.size, ++count;
232                 if (obj->madv == I915_MADV_DONTNEED)
233                         purgeable_size += obj->base.size, ++purgeable_count;
234         }
235         seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
236
237         size = count = mappable_size = mappable_count = 0;
238         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
239                 if (obj->fault_mappable) {
240                         size += obj->gtt_space->size;
241                         ++count;
242                 }
243                 if (obj->pin_mappable) {
244                         mappable_size += obj->gtt_space->size;
245                         ++mappable_count;
246                 }
247                 if (obj->madv == I915_MADV_DONTNEED) {
248                         purgeable_size += obj->base.size;
249                         ++purgeable_count;
250                 }
251         }
252         seq_printf(m, "%u purgeable objects, %zu bytes\n",
253                    purgeable_count, purgeable_size);
254         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
255                    mappable_count, mappable_size);
256         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
257                    count, size);
258
259         seq_printf(m, "%zu [%zu] gtt total\n",
260                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
261
262         mutex_unlock(&dev->struct_mutex);
263
264         return 0;
265 }
266
267 static int i915_gem_gtt_info(struct seq_file *m, void* data)
268 {
269         struct drm_info_node *node = (struct drm_info_node *) m->private;
270         struct drm_device *dev = node->minor->dev;
271         uintptr_t list = (uintptr_t) node->info_ent->data;
272         struct drm_i915_private *dev_priv = dev->dev_private;
273         struct drm_i915_gem_object *obj;
274         size_t total_obj_size, total_gtt_size;
275         int count, ret;
276
277         ret = mutex_lock_interruptible(&dev->struct_mutex);
278         if (ret)
279                 return ret;
280
281         total_obj_size = total_gtt_size = count = 0;
282         list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
283                 if (list == PINNED_LIST && obj->pin_count == 0)
284                         continue;
285
286                 seq_printf(m, "   ");
287                 describe_obj(m, obj);
288                 seq_printf(m, "\n");
289                 total_obj_size += obj->base.size;
290                 total_gtt_size += obj->gtt_space->size;
291                 count++;
292         }
293
294         mutex_unlock(&dev->struct_mutex);
295
296         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
297                    count, total_obj_size, total_gtt_size);
298
299         return 0;
300 }
301
302 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
303 {
304         struct drm_info_node *node = (struct drm_info_node *) m->private;
305         struct drm_device *dev = node->minor->dev;
306         unsigned long flags;
307         struct intel_crtc *crtc;
308
309         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
310                 const char pipe = pipe_name(crtc->pipe);
311                 const char plane = plane_name(crtc->plane);
312                 struct intel_unpin_work *work;
313
314                 spin_lock_irqsave(&dev->event_lock, flags);
315                 work = crtc->unpin_work;
316                 if (work == NULL) {
317                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
318                                    pipe, plane);
319                 } else {
320                         if (!work->pending) {
321                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
322                                            pipe, plane);
323                         } else {
324                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
325                                            pipe, plane);
326                         }
327                         if (work->enable_stall_check)
328                                 seq_printf(m, "Stall check enabled, ");
329                         else
330                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
331                         seq_printf(m, "%d prepares\n", work->pending);
332
333                         if (work->old_fb_obj) {
334                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
335                                 if (obj)
336                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
337                         }
338                         if (work->pending_flip_obj) {
339                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
340                                 if (obj)
341                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
342                         }
343                 }
344                 spin_unlock_irqrestore(&dev->event_lock, flags);
345         }
346
347         return 0;
348 }
349
350 static int i915_gem_request_info(struct seq_file *m, void *data)
351 {
352         struct drm_info_node *node = (struct drm_info_node *) m->private;
353         struct drm_device *dev = node->minor->dev;
354         drm_i915_private_t *dev_priv = dev->dev_private;
355         struct intel_ring_buffer *ring;
356         struct drm_i915_gem_request *gem_request;
357         int ret, count, i;
358
359         ret = mutex_lock_interruptible(&dev->struct_mutex);
360         if (ret)
361                 return ret;
362
363         count = 0;
364         for_each_ring(ring, dev_priv, i) {
365                 if (list_empty(&ring->request_list))
366                         continue;
367
368                 seq_printf(m, "%s requests:\n", ring->name);
369                 list_for_each_entry(gem_request,
370                                     &ring->request_list,
371                                     list) {
372                         seq_printf(m, "    %d @ %d\n",
373                                    gem_request->seqno,
374                                    (int) (jiffies - gem_request->emitted_jiffies));
375                 }
376                 count++;
377         }
378         mutex_unlock(&dev->struct_mutex);
379
380         if (count == 0)
381                 seq_printf(m, "No requests\n");
382
383         return 0;
384 }
385
386 static void i915_ring_seqno_info(struct seq_file *m,
387                                  struct intel_ring_buffer *ring)
388 {
389         if (ring->get_seqno) {
390                 seq_printf(m, "Current sequence (%s): %d\n",
391                            ring->name, ring->get_seqno(ring, false));
392         }
393 }
394
395 static int i915_gem_seqno_info(struct seq_file *m, void *data)
396 {
397         struct drm_info_node *node = (struct drm_info_node *) m->private;
398         struct drm_device *dev = node->minor->dev;
399         drm_i915_private_t *dev_priv = dev->dev_private;
400         struct intel_ring_buffer *ring;
401         int ret, i;
402
403         ret = mutex_lock_interruptible(&dev->struct_mutex);
404         if (ret)
405                 return ret;
406
407         for_each_ring(ring, dev_priv, i)
408                 i915_ring_seqno_info(m, ring);
409
410         mutex_unlock(&dev->struct_mutex);
411
412         return 0;
413 }
414
415
416 static int i915_interrupt_info(struct seq_file *m, void *data)
417 {
418         struct drm_info_node *node = (struct drm_info_node *) m->private;
419         struct drm_device *dev = node->minor->dev;
420         drm_i915_private_t *dev_priv = dev->dev_private;
421         struct intel_ring_buffer *ring;
422         int ret, i, pipe;
423
424         ret = mutex_lock_interruptible(&dev->struct_mutex);
425         if (ret)
426                 return ret;
427
428         if (IS_VALLEYVIEW(dev)) {
429                 seq_printf(m, "Display IER:\t%08x\n",
430                            I915_READ(VLV_IER));
431                 seq_printf(m, "Display IIR:\t%08x\n",
432                            I915_READ(VLV_IIR));
433                 seq_printf(m, "Display IIR_RW:\t%08x\n",
434                            I915_READ(VLV_IIR_RW));
435                 seq_printf(m, "Display IMR:\t%08x\n",
436                            I915_READ(VLV_IMR));
437                 for_each_pipe(pipe)
438                         seq_printf(m, "Pipe %c stat:\t%08x\n",
439                                    pipe_name(pipe),
440                                    I915_READ(PIPESTAT(pipe)));
441
442                 seq_printf(m, "Master IER:\t%08x\n",
443                            I915_READ(VLV_MASTER_IER));
444
445                 seq_printf(m, "Render IER:\t%08x\n",
446                            I915_READ(GTIER));
447                 seq_printf(m, "Render IIR:\t%08x\n",
448                            I915_READ(GTIIR));
449                 seq_printf(m, "Render IMR:\t%08x\n",
450                            I915_READ(GTIMR));
451
452                 seq_printf(m, "PM IER:\t\t%08x\n",
453                            I915_READ(GEN6_PMIER));
454                 seq_printf(m, "PM IIR:\t\t%08x\n",
455                            I915_READ(GEN6_PMIIR));
456                 seq_printf(m, "PM IMR:\t\t%08x\n",
457                            I915_READ(GEN6_PMIMR));
458
459                 seq_printf(m, "Port hotplug:\t%08x\n",
460                            I915_READ(PORT_HOTPLUG_EN));
461                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
462                            I915_READ(VLV_DPFLIPSTAT));
463                 seq_printf(m, "DPINVGTT:\t%08x\n",
464                            I915_READ(DPINVGTT));
465
466         } else if (!HAS_PCH_SPLIT(dev)) {
467                 seq_printf(m, "Interrupt enable:    %08x\n",
468                            I915_READ(IER));
469                 seq_printf(m, "Interrupt identity:  %08x\n",
470                            I915_READ(IIR));
471                 seq_printf(m, "Interrupt mask:      %08x\n",
472                            I915_READ(IMR));
473                 for_each_pipe(pipe)
474                         seq_printf(m, "Pipe %c stat:         %08x\n",
475                                    pipe_name(pipe),
476                                    I915_READ(PIPESTAT(pipe)));
477         } else {
478                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
479                            I915_READ(DEIER));
480                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
481                            I915_READ(DEIIR));
482                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
483                            I915_READ(DEIMR));
484                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
485                            I915_READ(SDEIER));
486                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
487                            I915_READ(SDEIIR));
488                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
489                            I915_READ(SDEIMR));
490                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
491                            I915_READ(GTIER));
492                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
493                            I915_READ(GTIIR));
494                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
495                            I915_READ(GTIMR));
496         }
497         seq_printf(m, "Interrupts received: %d\n",
498                    atomic_read(&dev_priv->irq_received));
499         for_each_ring(ring, dev_priv, i) {
500                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
501                         seq_printf(m,
502                                    "Graphics Interrupt mask (%s):       %08x\n",
503                                    ring->name, I915_READ_IMR(ring));
504                 }
505                 i915_ring_seqno_info(m, ring);
506         }
507         mutex_unlock(&dev->struct_mutex);
508
509         return 0;
510 }
511
512 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
513 {
514         struct drm_info_node *node = (struct drm_info_node *) m->private;
515         struct drm_device *dev = node->minor->dev;
516         drm_i915_private_t *dev_priv = dev->dev_private;
517         int i, ret;
518
519         ret = mutex_lock_interruptible(&dev->struct_mutex);
520         if (ret)
521                 return ret;
522
523         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
524         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
525         for (i = 0; i < dev_priv->num_fence_regs; i++) {
526                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
527
528                 seq_printf(m, "Fence %d, pin count = %d, object = ",
529                            i, dev_priv->fence_regs[i].pin_count);
530                 if (obj == NULL)
531                         seq_printf(m, "unused");
532                 else
533                         describe_obj(m, obj);
534                 seq_printf(m, "\n");
535         }
536
537         mutex_unlock(&dev->struct_mutex);
538         return 0;
539 }
540
541 static int i915_hws_info(struct seq_file *m, void *data)
542 {
543         struct drm_info_node *node = (struct drm_info_node *) m->private;
544         struct drm_device *dev = node->minor->dev;
545         drm_i915_private_t *dev_priv = dev->dev_private;
546         struct intel_ring_buffer *ring;
547         const volatile u32 __iomem *hws;
548         int i;
549
550         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
551         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
552         if (hws == NULL)
553                 return 0;
554
555         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
556                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
557                            i * 4,
558                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
559         }
560         return 0;
561 }
562
563 static const char *ring_str(int ring)
564 {
565         switch (ring) {
566         case RCS: return "render";
567         case VCS: return "bsd";
568         case BCS: return "blt";
569         default: return "";
570         }
571 }
572
573 static const char *pin_flag(int pinned)
574 {
575         if (pinned > 0)
576                 return " P";
577         else if (pinned < 0)
578                 return " p";
579         else
580                 return "";
581 }
582
583 static const char *tiling_flag(int tiling)
584 {
585         switch (tiling) {
586         default:
587         case I915_TILING_NONE: return "";
588         case I915_TILING_X: return " X";
589         case I915_TILING_Y: return " Y";
590         }
591 }
592
593 static const char *dirty_flag(int dirty)
594 {
595         return dirty ? " dirty" : "";
596 }
597
598 static const char *purgeable_flag(int purgeable)
599 {
600         return purgeable ? " purgeable" : "";
601 }
602
603 static void print_error_buffers(struct seq_file *m,
604                                 const char *name,
605                                 struct drm_i915_error_buffer *err,
606                                 int count)
607 {
608         seq_printf(m, "%s [%d]:\n", name, count);
609
610         while (count--) {
611                 seq_printf(m, "  %08x %8u %04x %04x %x %x%s%s%s%s%s%s%s",
612                            err->gtt_offset,
613                            err->size,
614                            err->read_domains,
615                            err->write_domain,
616                            err->rseqno, err->wseqno,
617                            pin_flag(err->pinned),
618                            tiling_flag(err->tiling),
619                            dirty_flag(err->dirty),
620                            purgeable_flag(err->purgeable),
621                            err->ring != -1 ? " " : "",
622                            ring_str(err->ring),
623                            cache_level_str(err->cache_level));
624
625                 if (err->name)
626                         seq_printf(m, " (name: %d)", err->name);
627                 if (err->fence_reg != I915_FENCE_REG_NONE)
628                         seq_printf(m, " (fence: %d)", err->fence_reg);
629
630                 seq_printf(m, "\n");
631                 err++;
632         }
633 }
634
635 static void i915_ring_error_state(struct seq_file *m,
636                                   struct drm_device *dev,
637                                   struct drm_i915_error_state *error,
638                                   unsigned ring)
639 {
640         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
641         seq_printf(m, "%s command stream:\n", ring_str(ring));
642         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
643         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
644         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
645         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
646         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
647         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
648         if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
649                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
650
651         if (INTEL_INFO(dev)->gen >= 4)
652                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
653         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
654         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
655         if (INTEL_INFO(dev)->gen >= 6) {
656                 seq_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
657                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
658                 seq_printf(m, "  SYNC_0: 0x%08x\n",
659                            error->semaphore_mboxes[ring][0]);
660                 seq_printf(m, "  SYNC_1: 0x%08x\n",
661                            error->semaphore_mboxes[ring][1]);
662         }
663         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
664         seq_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
665         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
666         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
667 }
668
669 struct i915_error_state_file_priv {
670         struct drm_device *dev;
671         struct drm_i915_error_state *error;
672 };
673
674 static int i915_error_state(struct seq_file *m, void *unused)
675 {
676         struct i915_error_state_file_priv *error_priv = m->private;
677         struct drm_device *dev = error_priv->dev;
678         drm_i915_private_t *dev_priv = dev->dev_private;
679         struct drm_i915_error_state *error = error_priv->error;
680         struct intel_ring_buffer *ring;
681         int i, j, page, offset, elt;
682
683         if (!error) {
684                 seq_printf(m, "no error state collected\n");
685                 return 0;
686         }
687
688         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
689                    error->time.tv_usec);
690         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
691         seq_printf(m, "EIR: 0x%08x\n", error->eir);
692         seq_printf(m, "IER: 0x%08x\n", error->ier);
693         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
694         seq_printf(m, "CCID: 0x%08x\n", error->ccid);
695
696         for (i = 0; i < dev_priv->num_fence_regs; i++)
697                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
698
699         for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
700                 seq_printf(m, "  INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);
701
702         if (INTEL_INFO(dev)->gen >= 6) {
703                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
704                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
705         }
706
707         if (INTEL_INFO(dev)->gen == 7)
708                 seq_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
709
710         for_each_ring(ring, dev_priv, i)
711                 i915_ring_error_state(m, dev, error, i);
712
713         if (error->active_bo)
714                 print_error_buffers(m, "Active",
715                                     error->active_bo,
716                                     error->active_bo_count);
717
718         if (error->pinned_bo)
719                 print_error_buffers(m, "Pinned",
720                                     error->pinned_bo,
721                                     error->pinned_bo_count);
722
723         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
724                 struct drm_i915_error_object *obj;
725
726                 if ((obj = error->ring[i].batchbuffer)) {
727                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
728                                    dev_priv->ring[i].name,
729                                    obj->gtt_offset);
730                         offset = 0;
731                         for (page = 0; page < obj->page_count; page++) {
732                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
733                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
734                                         offset += 4;
735                                 }
736                         }
737                 }
738
739                 if (error->ring[i].num_requests) {
740                         seq_printf(m, "%s --- %d requests\n",
741                                    dev_priv->ring[i].name,
742                                    error->ring[i].num_requests);
743                         for (j = 0; j < error->ring[i].num_requests; j++) {
744                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
745                                            error->ring[i].requests[j].seqno,
746                                            error->ring[i].requests[j].jiffies,
747                                            error->ring[i].requests[j].tail);
748                         }
749                 }
750
751                 if ((obj = error->ring[i].ringbuffer)) {
752                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
753                                    dev_priv->ring[i].name,
754                                    obj->gtt_offset);
755                         offset = 0;
756                         for (page = 0; page < obj->page_count; page++) {
757                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
758                                         seq_printf(m, "%08x :  %08x\n",
759                                                    offset,
760                                                    obj->pages[page][elt]);
761                                         offset += 4;
762                                 }
763                         }
764                 }
765         }
766
767         if (error->overlay)
768                 intel_overlay_print_error_state(m, error->overlay);
769
770         if (error->display)
771                 intel_display_print_error_state(m, dev, error->display);
772
773         return 0;
774 }
775
776 static ssize_t
777 i915_error_state_write(struct file *filp,
778                        const char __user *ubuf,
779                        size_t cnt,
780                        loff_t *ppos)
781 {
782         struct seq_file *m = filp->private_data;
783         struct i915_error_state_file_priv *error_priv = m->private;
784         struct drm_device *dev = error_priv->dev;
785         int ret;
786
787         DRM_DEBUG_DRIVER("Resetting error state\n");
788
789         ret = mutex_lock_interruptible(&dev->struct_mutex);
790         if (ret)
791                 return ret;
792
793         i915_destroy_error_state(dev);
794         mutex_unlock(&dev->struct_mutex);
795
796         return cnt;
797 }
798
799 static int i915_error_state_open(struct inode *inode, struct file *file)
800 {
801         struct drm_device *dev = inode->i_private;
802         drm_i915_private_t *dev_priv = dev->dev_private;
803         struct i915_error_state_file_priv *error_priv;
804         unsigned long flags;
805
806         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
807         if (!error_priv)
808                 return -ENOMEM;
809
810         error_priv->dev = dev;
811
812         spin_lock_irqsave(&dev_priv->error_lock, flags);
813         error_priv->error = dev_priv->first_error;
814         if (error_priv->error)
815                 kref_get(&error_priv->error->ref);
816         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
817
818         return single_open(file, i915_error_state, error_priv);
819 }
820
821 static int i915_error_state_release(struct inode *inode, struct file *file)
822 {
823         struct seq_file *m = file->private_data;
824         struct i915_error_state_file_priv *error_priv = m->private;
825
826         if (error_priv->error)
827                 kref_put(&error_priv->error->ref, i915_error_state_free);
828         kfree(error_priv);
829
830         return single_release(inode, file);
831 }
832
833 static const struct file_operations i915_error_state_fops = {
834         .owner = THIS_MODULE,
835         .open = i915_error_state_open,
836         .read = seq_read,
837         .write = i915_error_state_write,
838         .llseek = default_llseek,
839         .release = i915_error_state_release,
840 };
841
842 static int i915_rstdby_delays(struct seq_file *m, void *unused)
843 {
844         struct drm_info_node *node = (struct drm_info_node *) m->private;
845         struct drm_device *dev = node->minor->dev;
846         drm_i915_private_t *dev_priv = dev->dev_private;
847         u16 crstanddelay;
848         int ret;
849
850         ret = mutex_lock_interruptible(&dev->struct_mutex);
851         if (ret)
852                 return ret;
853
854         crstanddelay = I915_READ16(CRSTANDVID);
855
856         mutex_unlock(&dev->struct_mutex);
857
858         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
859
860         return 0;
861 }
862
863 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
864 {
865         struct drm_info_node *node = (struct drm_info_node *) m->private;
866         struct drm_device *dev = node->minor->dev;
867         drm_i915_private_t *dev_priv = dev->dev_private;
868         int ret;
869
870         if (IS_GEN5(dev)) {
871                 u16 rgvswctl = I915_READ16(MEMSWCTL);
872                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
873
874                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
875                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
876                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
877                            MEMSTAT_VID_SHIFT);
878                 seq_printf(m, "Current P-state: %d\n",
879                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
880         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
881                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
882                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
883                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
884                 u32 rpstat;
885                 u32 rpupei, rpcurup, rpprevup;
886                 u32 rpdownei, rpcurdown, rpprevdown;
887                 int max_freq;
888
889                 /* RPSTAT1 is in the GT power well */
890                 ret = mutex_lock_interruptible(&dev->struct_mutex);
891                 if (ret)
892                         return ret;
893
894                 gen6_gt_force_wake_get(dev_priv);
895
896                 rpstat = I915_READ(GEN6_RPSTAT1);
897                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
898                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
899                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
900                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
901                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
902                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
903
904                 gen6_gt_force_wake_put(dev_priv);
905                 mutex_unlock(&dev->struct_mutex);
906
907                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
908                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
909                 seq_printf(m, "Render p-state ratio: %d\n",
910                            (gt_perf_status & 0xff00) >> 8);
911                 seq_printf(m, "Render p-state VID: %d\n",
912                            gt_perf_status & 0xff);
913                 seq_printf(m, "Render p-state limit: %d\n",
914                            rp_state_limits & 0xff);
915                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
916                                                 GEN6_CAGF_SHIFT) * GT_FREQUENCY_MULTIPLIER);
917                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
918                            GEN6_CURICONT_MASK);
919                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
920                            GEN6_CURBSYTAVG_MASK);
921                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
922                            GEN6_CURBSYTAVG_MASK);
923                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
924                            GEN6_CURIAVG_MASK);
925                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
926                            GEN6_CURBSYTAVG_MASK);
927                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
928                            GEN6_CURBSYTAVG_MASK);
929
930                 max_freq = (rp_state_cap & 0xff0000) >> 16;
931                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
932                            max_freq * GT_FREQUENCY_MULTIPLIER);
933
934                 max_freq = (rp_state_cap & 0xff00) >> 8;
935                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
936                            max_freq * GT_FREQUENCY_MULTIPLIER);
937
938                 max_freq = rp_state_cap & 0xff;
939                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
940                            max_freq * GT_FREQUENCY_MULTIPLIER);
941         } else {
942                 seq_printf(m, "no P-state info available\n");
943         }
944
945         return 0;
946 }
947
948 static int i915_delayfreq_table(struct seq_file *m, void *unused)
949 {
950         struct drm_info_node *node = (struct drm_info_node *) m->private;
951         struct drm_device *dev = node->minor->dev;
952         drm_i915_private_t *dev_priv = dev->dev_private;
953         u32 delayfreq;
954         int ret, i;
955
956         ret = mutex_lock_interruptible(&dev->struct_mutex);
957         if (ret)
958                 return ret;
959
960         for (i = 0; i < 16; i++) {
961                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
962                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
963                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
964         }
965
966         mutex_unlock(&dev->struct_mutex);
967
968         return 0;
969 }
970
971 static inline int MAP_TO_MV(int map)
972 {
973         return 1250 - (map * 25);
974 }
975
976 static int i915_inttoext_table(struct seq_file *m, void *unused)
977 {
978         struct drm_info_node *node = (struct drm_info_node *) m->private;
979         struct drm_device *dev = node->minor->dev;
980         drm_i915_private_t *dev_priv = dev->dev_private;
981         u32 inttoext;
982         int ret, i;
983
984         ret = mutex_lock_interruptible(&dev->struct_mutex);
985         if (ret)
986                 return ret;
987
988         for (i = 1; i <= 32; i++) {
989                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
990                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
991         }
992
993         mutex_unlock(&dev->struct_mutex);
994
995         return 0;
996 }
997
998 static int ironlake_drpc_info(struct seq_file *m)
999 {
1000         struct drm_info_node *node = (struct drm_info_node *) m->private;
1001         struct drm_device *dev = node->minor->dev;
1002         drm_i915_private_t *dev_priv = dev->dev_private;
1003         u32 rgvmodectl, rstdbyctl;
1004         u16 crstandvid;
1005         int ret;
1006
1007         ret = mutex_lock_interruptible(&dev->struct_mutex);
1008         if (ret)
1009                 return ret;
1010
1011         rgvmodectl = I915_READ(MEMMODECTL);
1012         rstdbyctl = I915_READ(RSTDBYCTL);
1013         crstandvid = I915_READ16(CRSTANDVID);
1014
1015         mutex_unlock(&dev->struct_mutex);
1016
1017         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1018                    "yes" : "no");
1019         seq_printf(m, "Boost freq: %d\n",
1020                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1021                    MEMMODE_BOOST_FREQ_SHIFT);
1022         seq_printf(m, "HW control enabled: %s\n",
1023                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1024         seq_printf(m, "SW control enabled: %s\n",
1025                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1026         seq_printf(m, "Gated voltage change: %s\n",
1027                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1028         seq_printf(m, "Starting frequency: P%d\n",
1029                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1030         seq_printf(m, "Max P-state: P%d\n",
1031                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1032         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1033         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1034         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1035         seq_printf(m, "Render standby enabled: %s\n",
1036                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1037         seq_printf(m, "Current RS state: ");
1038         switch (rstdbyctl & RSX_STATUS_MASK) {
1039         case RSX_STATUS_ON:
1040                 seq_printf(m, "on\n");
1041                 break;
1042         case RSX_STATUS_RC1:
1043                 seq_printf(m, "RC1\n");
1044                 break;
1045         case RSX_STATUS_RC1E:
1046                 seq_printf(m, "RC1E\n");
1047                 break;
1048         case RSX_STATUS_RS1:
1049                 seq_printf(m, "RS1\n");
1050                 break;
1051         case RSX_STATUS_RS2:
1052                 seq_printf(m, "RS2 (RC6)\n");
1053                 break;
1054         case RSX_STATUS_RS3:
1055                 seq_printf(m, "RC3 (RC6+)\n");
1056                 break;
1057         default:
1058                 seq_printf(m, "unknown\n");
1059                 break;
1060         }
1061
1062         return 0;
1063 }
1064
1065 static int gen6_drpc_info(struct seq_file *m)
1066 {
1067
1068         struct drm_info_node *node = (struct drm_info_node *) m->private;
1069         struct drm_device *dev = node->minor->dev;
1070         struct drm_i915_private *dev_priv = dev->dev_private;
1071         u32 rpmodectl1, gt_core_status, rcctl1;
1072         unsigned forcewake_count;
1073         int count=0, ret;
1074
1075
1076         ret = mutex_lock_interruptible(&dev->struct_mutex);
1077         if (ret)
1078                 return ret;
1079
1080         spin_lock_irq(&dev_priv->gt_lock);
1081         forcewake_count = dev_priv->forcewake_count;
1082         spin_unlock_irq(&dev_priv->gt_lock);
1083
1084         if (forcewake_count) {
1085                 seq_printf(m, "RC information inaccurate because somebody "
1086                               "holds a forcewake reference \n");
1087         } else {
1088                 /* NB: we cannot use forcewake, else we read the wrong values */
1089                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1090                         udelay(10);
1091                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1092         }
1093
1094         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1095         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1096
1097         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1098         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1099         mutex_unlock(&dev->struct_mutex);
1100
1101         seq_printf(m, "Video Turbo Mode: %s\n",
1102                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1103         seq_printf(m, "HW control enabled: %s\n",
1104                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1105         seq_printf(m, "SW control enabled: %s\n",
1106                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1107                           GEN6_RP_MEDIA_SW_MODE));
1108         seq_printf(m, "RC1e Enabled: %s\n",
1109                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1110         seq_printf(m, "RC6 Enabled: %s\n",
1111                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1112         seq_printf(m, "Deep RC6 Enabled: %s\n",
1113                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1114         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1115                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1116         seq_printf(m, "Current RC state: ");
1117         switch (gt_core_status & GEN6_RCn_MASK) {
1118         case GEN6_RC0:
1119                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1120                         seq_printf(m, "Core Power Down\n");
1121                 else
1122                         seq_printf(m, "on\n");
1123                 break;
1124         case GEN6_RC3:
1125                 seq_printf(m, "RC3\n");
1126                 break;
1127         case GEN6_RC6:
1128                 seq_printf(m, "RC6\n");
1129                 break;
1130         case GEN6_RC7:
1131                 seq_printf(m, "RC7\n");
1132                 break;
1133         default:
1134                 seq_printf(m, "Unknown\n");
1135                 break;
1136         }
1137
1138         seq_printf(m, "Core Power Down: %s\n",
1139                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1140
1141         /* Not exactly sure what this is */
1142         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1143                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1144         seq_printf(m, "RC6 residency since boot: %u\n",
1145                    I915_READ(GEN6_GT_GFX_RC6));
1146         seq_printf(m, "RC6+ residency since boot: %u\n",
1147                    I915_READ(GEN6_GT_GFX_RC6p));
1148         seq_printf(m, "RC6++ residency since boot: %u\n",
1149                    I915_READ(GEN6_GT_GFX_RC6pp));
1150
1151         return 0;
1152 }
1153
1154 static int i915_drpc_info(struct seq_file *m, void *unused)
1155 {
1156         struct drm_info_node *node = (struct drm_info_node *) m->private;
1157         struct drm_device *dev = node->minor->dev;
1158
1159         if (IS_GEN6(dev) || IS_GEN7(dev))
1160                 return gen6_drpc_info(m);
1161         else
1162                 return ironlake_drpc_info(m);
1163 }
1164
1165 static int i915_fbc_status(struct seq_file *m, void *unused)
1166 {
1167         struct drm_info_node *node = (struct drm_info_node *) m->private;
1168         struct drm_device *dev = node->minor->dev;
1169         drm_i915_private_t *dev_priv = dev->dev_private;
1170
1171         if (!I915_HAS_FBC(dev)) {
1172                 seq_printf(m, "FBC unsupported on this chipset\n");
1173                 return 0;
1174         }
1175
1176         if (intel_fbc_enabled(dev)) {
1177                 seq_printf(m, "FBC enabled\n");
1178         } else {
1179                 seq_printf(m, "FBC disabled: ");
1180                 switch (dev_priv->no_fbc_reason) {
1181                 case FBC_NO_OUTPUT:
1182                         seq_printf(m, "no outputs");
1183                         break;
1184                 case FBC_STOLEN_TOO_SMALL:
1185                         seq_printf(m, "not enough stolen memory");
1186                         break;
1187                 case FBC_UNSUPPORTED_MODE:
1188                         seq_printf(m, "mode not supported");
1189                         break;
1190                 case FBC_MODE_TOO_LARGE:
1191                         seq_printf(m, "mode too large");
1192                         break;
1193                 case FBC_BAD_PLANE:
1194                         seq_printf(m, "FBC unsupported on plane");
1195                         break;
1196                 case FBC_NOT_TILED:
1197                         seq_printf(m, "scanout buffer not tiled");
1198                         break;
1199                 case FBC_MULTIPLE_PIPES:
1200                         seq_printf(m, "multiple pipes are enabled");
1201                         break;
1202                 case FBC_MODULE_PARAM:
1203                         seq_printf(m, "disabled per module param (default off)");
1204                         break;
1205                 default:
1206                         seq_printf(m, "unknown reason");
1207                 }
1208                 seq_printf(m, "\n");
1209         }
1210         return 0;
1211 }
1212
1213 static int i915_sr_status(struct seq_file *m, void *unused)
1214 {
1215         struct drm_info_node *node = (struct drm_info_node *) m->private;
1216         struct drm_device *dev = node->minor->dev;
1217         drm_i915_private_t *dev_priv = dev->dev_private;
1218         bool sr_enabled = false;
1219
1220         if (HAS_PCH_SPLIT(dev))
1221                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1222         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1223                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1224         else if (IS_I915GM(dev))
1225                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1226         else if (IS_PINEVIEW(dev))
1227                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1228
1229         seq_printf(m, "self-refresh: %s\n",
1230                    sr_enabled ? "enabled" : "disabled");
1231
1232         return 0;
1233 }
1234
1235 static int i915_emon_status(struct seq_file *m, void *unused)
1236 {
1237         struct drm_info_node *node = (struct drm_info_node *) m->private;
1238         struct drm_device *dev = node->minor->dev;
1239         drm_i915_private_t *dev_priv = dev->dev_private;
1240         unsigned long temp, chipset, gfx;
1241         int ret;
1242
1243         if (!IS_GEN5(dev))
1244                 return -ENODEV;
1245
1246         ret = mutex_lock_interruptible(&dev->struct_mutex);
1247         if (ret)
1248                 return ret;
1249
1250         temp = i915_mch_val(dev_priv);
1251         chipset = i915_chipset_val(dev_priv);
1252         gfx = i915_gfx_val(dev_priv);
1253         mutex_unlock(&dev->struct_mutex);
1254
1255         seq_printf(m, "GMCH temp: %ld\n", temp);
1256         seq_printf(m, "Chipset power: %ld\n", chipset);
1257         seq_printf(m, "GFX power: %ld\n", gfx);
1258         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1259
1260         return 0;
1261 }
1262
1263 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1264 {
1265         struct drm_info_node *node = (struct drm_info_node *) m->private;
1266         struct drm_device *dev = node->minor->dev;
1267         drm_i915_private_t *dev_priv = dev->dev_private;
1268         int ret;
1269         int gpu_freq, ia_freq;
1270
1271         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1272                 seq_printf(m, "unsupported on this chipset\n");
1273                 return 0;
1274         }
1275
1276         ret = mutex_lock_interruptible(&dev->struct_mutex);
1277         if (ret)
1278                 return ret;
1279
1280         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1281
1282         for (gpu_freq = dev_priv->rps.min_delay;
1283              gpu_freq <= dev_priv->rps.max_delay;
1284              gpu_freq++) {
1285                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1286                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1287                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1288                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1289                               GEN6_PCODE_READY) == 0, 10)) {
1290                         DRM_ERROR("pcode read of freq table timed out\n");
1291                         continue;
1292                 }
1293                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1294                 seq_printf(m, "%d\t\t%d\n", gpu_freq * GT_FREQUENCY_MULTIPLIER, ia_freq * 100);
1295         }
1296
1297         mutex_unlock(&dev->struct_mutex);
1298
1299         return 0;
1300 }
1301
1302 static int i915_gfxec(struct seq_file *m, void *unused)
1303 {
1304         struct drm_info_node *node = (struct drm_info_node *) m->private;
1305         struct drm_device *dev = node->minor->dev;
1306         drm_i915_private_t *dev_priv = dev->dev_private;
1307         int ret;
1308
1309         ret = mutex_lock_interruptible(&dev->struct_mutex);
1310         if (ret)
1311                 return ret;
1312
1313         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1314
1315         mutex_unlock(&dev->struct_mutex);
1316
1317         return 0;
1318 }
1319
1320 static int i915_opregion(struct seq_file *m, void *unused)
1321 {
1322         struct drm_info_node *node = (struct drm_info_node *) m->private;
1323         struct drm_device *dev = node->minor->dev;
1324         drm_i915_private_t *dev_priv = dev->dev_private;
1325         struct intel_opregion *opregion = &dev_priv->opregion;
1326         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1327         int ret;
1328
1329         if (data == NULL)
1330                 return -ENOMEM;
1331
1332         ret = mutex_lock_interruptible(&dev->struct_mutex);
1333         if (ret)
1334                 goto out;
1335
1336         if (opregion->header) {
1337                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1338                 seq_write(m, data, OPREGION_SIZE);
1339         }
1340
1341         mutex_unlock(&dev->struct_mutex);
1342
1343 out:
1344         kfree(data);
1345         return 0;
1346 }
1347
1348 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1349 {
1350         struct drm_info_node *node = (struct drm_info_node *) m->private;
1351         struct drm_device *dev = node->minor->dev;
1352         drm_i915_private_t *dev_priv = dev->dev_private;
1353         struct intel_fbdev *ifbdev;
1354         struct intel_framebuffer *fb;
1355         int ret;
1356
1357         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1358         if (ret)
1359                 return ret;
1360
1361         ifbdev = dev_priv->fbdev;
1362         fb = to_intel_framebuffer(ifbdev->helper.fb);
1363
1364         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1365                    fb->base.width,
1366                    fb->base.height,
1367                    fb->base.depth,
1368                    fb->base.bits_per_pixel);
1369         describe_obj(m, fb->obj);
1370         seq_printf(m, "\n");
1371
1372         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1373                 if (&fb->base == ifbdev->helper.fb)
1374                         continue;
1375
1376                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1377                            fb->base.width,
1378                            fb->base.height,
1379                            fb->base.depth,
1380                            fb->base.bits_per_pixel);
1381                 describe_obj(m, fb->obj);
1382                 seq_printf(m, "\n");
1383         }
1384
1385         mutex_unlock(&dev->mode_config.mutex);
1386
1387         return 0;
1388 }
1389
1390 static int i915_context_status(struct seq_file *m, void *unused)
1391 {
1392         struct drm_info_node *node = (struct drm_info_node *) m->private;
1393         struct drm_device *dev = node->minor->dev;
1394         drm_i915_private_t *dev_priv = dev->dev_private;
1395         int ret;
1396
1397         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1398         if (ret)
1399                 return ret;
1400
1401         if (dev_priv->pwrctx) {
1402                 seq_printf(m, "power context ");
1403                 describe_obj(m, dev_priv->pwrctx);
1404                 seq_printf(m, "\n");
1405         }
1406
1407         if (dev_priv->renderctx) {
1408                 seq_printf(m, "render context ");
1409                 describe_obj(m, dev_priv->renderctx);
1410                 seq_printf(m, "\n");
1411         }
1412
1413         mutex_unlock(&dev->mode_config.mutex);
1414
1415         return 0;
1416 }
1417
1418 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1419 {
1420         struct drm_info_node *node = (struct drm_info_node *) m->private;
1421         struct drm_device *dev = node->minor->dev;
1422         struct drm_i915_private *dev_priv = dev->dev_private;
1423         unsigned forcewake_count;
1424
1425         spin_lock_irq(&dev_priv->gt_lock);
1426         forcewake_count = dev_priv->forcewake_count;
1427         spin_unlock_irq(&dev_priv->gt_lock);
1428
1429         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1430
1431         return 0;
1432 }
1433
1434 static const char *swizzle_string(unsigned swizzle)
1435 {
1436         switch(swizzle) {
1437         case I915_BIT_6_SWIZZLE_NONE:
1438                 return "none";
1439         case I915_BIT_6_SWIZZLE_9:
1440                 return "bit9";
1441         case I915_BIT_6_SWIZZLE_9_10:
1442                 return "bit9/bit10";
1443         case I915_BIT_6_SWIZZLE_9_11:
1444                 return "bit9/bit11";
1445         case I915_BIT_6_SWIZZLE_9_10_11:
1446                 return "bit9/bit10/bit11";
1447         case I915_BIT_6_SWIZZLE_9_17:
1448                 return "bit9/bit17";
1449         case I915_BIT_6_SWIZZLE_9_10_17:
1450                 return "bit9/bit10/bit17";
1451         case I915_BIT_6_SWIZZLE_UNKNOWN:
1452                 return "unkown";
1453         }
1454
1455         return "bug";
1456 }
1457
1458 static int i915_swizzle_info(struct seq_file *m, void *data)
1459 {
1460         struct drm_info_node *node = (struct drm_info_node *) m->private;
1461         struct drm_device *dev = node->minor->dev;
1462         struct drm_i915_private *dev_priv = dev->dev_private;
1463         int ret;
1464
1465         ret = mutex_lock_interruptible(&dev->struct_mutex);
1466         if (ret)
1467                 return ret;
1468
1469         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1470                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1471         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1472                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1473
1474         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1475                 seq_printf(m, "DDC = 0x%08x\n",
1476                            I915_READ(DCC));
1477                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1478                            I915_READ16(C0DRB3));
1479                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1480                            I915_READ16(C1DRB3));
1481         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1482                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1483                            I915_READ(MAD_DIMM_C0));
1484                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1485                            I915_READ(MAD_DIMM_C1));
1486                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1487                            I915_READ(MAD_DIMM_C2));
1488                 seq_printf(m, "TILECTL = 0x%08x\n",
1489                            I915_READ(TILECTL));
1490                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1491                            I915_READ(ARB_MODE));
1492                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1493                            I915_READ(DISP_ARB_CTL));
1494         }
1495         mutex_unlock(&dev->struct_mutex);
1496
1497         return 0;
1498 }
1499
1500 static int i915_ppgtt_info(struct seq_file *m, void *data)
1501 {
1502         struct drm_info_node *node = (struct drm_info_node *) m->private;
1503         struct drm_device *dev = node->minor->dev;
1504         struct drm_i915_private *dev_priv = dev->dev_private;
1505         struct intel_ring_buffer *ring;
1506         int i, ret;
1507
1508
1509         ret = mutex_lock_interruptible(&dev->struct_mutex);
1510         if (ret)
1511                 return ret;
1512         if (INTEL_INFO(dev)->gen == 6)
1513                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1514
1515         for_each_ring(ring, dev_priv, i) {
1516                 seq_printf(m, "%s\n", ring->name);
1517                 if (INTEL_INFO(dev)->gen == 7)
1518                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1519                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1520                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1521                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1522         }
1523         if (dev_priv->mm.aliasing_ppgtt) {
1524                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1525
1526                 seq_printf(m, "aliasing PPGTT:\n");
1527                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1528         }
1529         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1530         mutex_unlock(&dev->struct_mutex);
1531
1532         return 0;
1533 }
1534
1535 static int i915_dpio_info(struct seq_file *m, void *data)
1536 {
1537         struct drm_info_node *node = (struct drm_info_node *) m->private;
1538         struct drm_device *dev = node->minor->dev;
1539         struct drm_i915_private *dev_priv = dev->dev_private;
1540         int ret;
1541
1542
1543         if (!IS_VALLEYVIEW(dev)) {
1544                 seq_printf(m, "unsupported\n");
1545                 return 0;
1546         }
1547
1548         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1549         if (ret)
1550                 return ret;
1551
1552         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1553
1554         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1555                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1556         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1557                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1558
1559         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1560                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1561         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1562                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1563
1564         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1565                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1566         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1567                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1568
1569         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1570                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1571         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1572                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1573
1574         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1575                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1576
1577         mutex_unlock(&dev->mode_config.mutex);
1578
1579         return 0;
1580 }
1581
1582 static ssize_t
1583 i915_wedged_read(struct file *filp,
1584                  char __user *ubuf,
1585                  size_t max,
1586                  loff_t *ppos)
1587 {
1588         struct drm_device *dev = filp->private_data;
1589         drm_i915_private_t *dev_priv = dev->dev_private;
1590         char buf[80];
1591         int len;
1592
1593         len = snprintf(buf, sizeof(buf),
1594                        "wedged :  %d\n",
1595                        atomic_read(&dev_priv->mm.wedged));
1596
1597         if (len > sizeof(buf))
1598                 len = sizeof(buf);
1599
1600         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1601 }
1602
1603 static ssize_t
1604 i915_wedged_write(struct file *filp,
1605                   const char __user *ubuf,
1606                   size_t cnt,
1607                   loff_t *ppos)
1608 {
1609         struct drm_device *dev = filp->private_data;
1610         char buf[20];
1611         int val = 1;
1612
1613         if (cnt > 0) {
1614                 if (cnt > sizeof(buf) - 1)
1615                         return -EINVAL;
1616
1617                 if (copy_from_user(buf, ubuf, cnt))
1618                         return -EFAULT;
1619                 buf[cnt] = 0;
1620
1621                 val = simple_strtoul(buf, NULL, 0);
1622         }
1623
1624         DRM_INFO("Manually setting wedged to %d\n", val);
1625         i915_handle_error(dev, val);
1626
1627         return cnt;
1628 }
1629
1630 static const struct file_operations i915_wedged_fops = {
1631         .owner = THIS_MODULE,
1632         .open = simple_open,
1633         .read = i915_wedged_read,
1634         .write = i915_wedged_write,
1635         .llseek = default_llseek,
1636 };
1637
1638 static ssize_t
1639 i915_ring_stop_read(struct file *filp,
1640                     char __user *ubuf,
1641                     size_t max,
1642                     loff_t *ppos)
1643 {
1644         struct drm_device *dev = filp->private_data;
1645         drm_i915_private_t *dev_priv = dev->dev_private;
1646         char buf[20];
1647         int len;
1648
1649         len = snprintf(buf, sizeof(buf),
1650                        "0x%08x\n", dev_priv->stop_rings);
1651
1652         if (len > sizeof(buf))
1653                 len = sizeof(buf);
1654
1655         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1656 }
1657
1658 static ssize_t
1659 i915_ring_stop_write(struct file *filp,
1660                      const char __user *ubuf,
1661                      size_t cnt,
1662                      loff_t *ppos)
1663 {
1664         struct drm_device *dev = filp->private_data;
1665         struct drm_i915_private *dev_priv = dev->dev_private;
1666         char buf[20];
1667         int val = 0, ret;
1668
1669         if (cnt > 0) {
1670                 if (cnt > sizeof(buf) - 1)
1671                         return -EINVAL;
1672
1673                 if (copy_from_user(buf, ubuf, cnt))
1674                         return -EFAULT;
1675                 buf[cnt] = 0;
1676
1677                 val = simple_strtoul(buf, NULL, 0);
1678         }
1679
1680         DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1681
1682         ret = mutex_lock_interruptible(&dev->struct_mutex);
1683         if (ret)
1684                 return ret;
1685
1686         dev_priv->stop_rings = val;
1687         mutex_unlock(&dev->struct_mutex);
1688
1689         return cnt;
1690 }
1691
1692 static const struct file_operations i915_ring_stop_fops = {
1693         .owner = THIS_MODULE,
1694         .open = simple_open,
1695         .read = i915_ring_stop_read,
1696         .write = i915_ring_stop_write,
1697         .llseek = default_llseek,
1698 };
1699
1700 static ssize_t
1701 i915_max_freq_read(struct file *filp,
1702                    char __user *ubuf,
1703                    size_t max,
1704                    loff_t *ppos)
1705 {
1706         struct drm_device *dev = filp->private_data;
1707         drm_i915_private_t *dev_priv = dev->dev_private;
1708         char buf[80];
1709         int len, ret;
1710
1711         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1712                 return -ENODEV;
1713
1714         ret = mutex_lock_interruptible(&dev->struct_mutex);
1715         if (ret)
1716                 return ret;
1717
1718         len = snprintf(buf, sizeof(buf),
1719                        "max freq: %d\n", dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER);
1720         mutex_unlock(&dev->struct_mutex);
1721
1722         if (len > sizeof(buf))
1723                 len = sizeof(buf);
1724
1725         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1726 }
1727
1728 static ssize_t
1729 i915_max_freq_write(struct file *filp,
1730                   const char __user *ubuf,
1731                   size_t cnt,
1732                   loff_t *ppos)
1733 {
1734         struct drm_device *dev = filp->private_data;
1735         struct drm_i915_private *dev_priv = dev->dev_private;
1736         char buf[20];
1737         int val = 1, ret;
1738
1739         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1740                 return -ENODEV;
1741
1742         if (cnt > 0) {
1743                 if (cnt > sizeof(buf) - 1)
1744                         return -EINVAL;
1745
1746                 if (copy_from_user(buf, ubuf, cnt))
1747                         return -EFAULT;
1748                 buf[cnt] = 0;
1749
1750                 val = simple_strtoul(buf, NULL, 0);
1751         }
1752
1753         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1754
1755         ret = mutex_lock_interruptible(&dev->struct_mutex);
1756         if (ret)
1757                 return ret;
1758
1759         /*
1760          * Turbo will still be enabled, but won't go above the set value.
1761          */
1762         dev_priv->rps.max_delay = val / GT_FREQUENCY_MULTIPLIER;
1763
1764         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1765         mutex_unlock(&dev->struct_mutex);
1766
1767         return cnt;
1768 }
1769
1770 static const struct file_operations i915_max_freq_fops = {
1771         .owner = THIS_MODULE,
1772         .open = simple_open,
1773         .read = i915_max_freq_read,
1774         .write = i915_max_freq_write,
1775         .llseek = default_llseek,
1776 };
1777
1778 static ssize_t
1779 i915_min_freq_read(struct file *filp, char __user *ubuf, size_t max,
1780                    loff_t *ppos)
1781 {
1782         struct drm_device *dev = filp->private_data;
1783         drm_i915_private_t *dev_priv = dev->dev_private;
1784         char buf[80];
1785         int len, ret;
1786
1787         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1788                 return -ENODEV;
1789
1790         ret = mutex_lock_interruptible(&dev->struct_mutex);
1791         if (ret)
1792                 return ret;
1793
1794         len = snprintf(buf, sizeof(buf),
1795                        "min freq: %d\n", dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER);
1796         mutex_unlock(&dev->struct_mutex);
1797
1798         if (len > sizeof(buf))
1799                 len = sizeof(buf);
1800
1801         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1802 }
1803
1804 static ssize_t
1805 i915_min_freq_write(struct file *filp, const char __user *ubuf, size_t cnt,
1806                     loff_t *ppos)
1807 {
1808         struct drm_device *dev = filp->private_data;
1809         struct drm_i915_private *dev_priv = dev->dev_private;
1810         char buf[20];
1811         int val = 1, ret;
1812
1813         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1814                 return -ENODEV;
1815
1816         if (cnt > 0) {
1817                 if (cnt > sizeof(buf) - 1)
1818                         return -EINVAL;
1819
1820                 if (copy_from_user(buf, ubuf, cnt))
1821                         return -EFAULT;
1822                 buf[cnt] = 0;
1823
1824                 val = simple_strtoul(buf, NULL, 0);
1825         }
1826
1827         DRM_DEBUG_DRIVER("Manually setting min freq to %d\n", val);
1828
1829         ret = mutex_lock_interruptible(&dev->struct_mutex);
1830         if (ret)
1831                 return ret;
1832
1833         /*
1834          * Turbo will still be enabled, but won't go below the set value.
1835          */
1836         dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
1837
1838         gen6_set_rps(dev, val / GT_FREQUENCY_MULTIPLIER);
1839         mutex_unlock(&dev->struct_mutex);
1840
1841         return cnt;
1842 }
1843
1844 static const struct file_operations i915_min_freq_fops = {
1845         .owner = THIS_MODULE,
1846         .open = simple_open,
1847         .read = i915_min_freq_read,
1848         .write = i915_min_freq_write,
1849         .llseek = default_llseek,
1850 };
1851
1852 static ssize_t
1853 i915_cache_sharing_read(struct file *filp,
1854                    char __user *ubuf,
1855                    size_t max,
1856                    loff_t *ppos)
1857 {
1858         struct drm_device *dev = filp->private_data;
1859         drm_i915_private_t *dev_priv = dev->dev_private;
1860         char buf[80];
1861         u32 snpcr;
1862         int len, ret;
1863
1864         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1865                 return -ENODEV;
1866
1867         ret = mutex_lock_interruptible(&dev->struct_mutex);
1868         if (ret)
1869                 return ret;
1870
1871         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1872         mutex_unlock(&dev_priv->dev->struct_mutex);
1873
1874         len = snprintf(buf, sizeof(buf),
1875                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1876                        GEN6_MBC_SNPCR_SHIFT);
1877
1878         if (len > sizeof(buf))
1879                 len = sizeof(buf);
1880
1881         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1882 }
1883
1884 static ssize_t
1885 i915_cache_sharing_write(struct file *filp,
1886                   const char __user *ubuf,
1887                   size_t cnt,
1888                   loff_t *ppos)
1889 {
1890         struct drm_device *dev = filp->private_data;
1891         struct drm_i915_private *dev_priv = dev->dev_private;
1892         char buf[20];
1893         u32 snpcr;
1894         int val = 1;
1895
1896         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1897                 return -ENODEV;
1898
1899         if (cnt > 0) {
1900                 if (cnt > sizeof(buf) - 1)
1901                         return -EINVAL;
1902
1903                 if (copy_from_user(buf, ubuf, cnt))
1904                         return -EFAULT;
1905                 buf[cnt] = 0;
1906
1907                 val = simple_strtoul(buf, NULL, 0);
1908         }
1909
1910         if (val < 0 || val > 3)
1911                 return -EINVAL;
1912
1913         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1914
1915         /* Update the cache sharing policy here as well */
1916         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1917         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1918         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1919         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1920
1921         return cnt;
1922 }
1923
1924 static const struct file_operations i915_cache_sharing_fops = {
1925         .owner = THIS_MODULE,
1926         .open = simple_open,
1927         .read = i915_cache_sharing_read,
1928         .write = i915_cache_sharing_write,
1929         .llseek = default_llseek,
1930 };
1931
1932 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1933  * allocated we need to hook into the minor for release. */
1934 static int
1935 drm_add_fake_info_node(struct drm_minor *minor,
1936                        struct dentry *ent,
1937                        const void *key)
1938 {
1939         struct drm_info_node *node;
1940
1941         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1942         if (node == NULL) {
1943                 debugfs_remove(ent);
1944                 return -ENOMEM;
1945         }
1946
1947         node->minor = minor;
1948         node->dent = ent;
1949         node->info_ent = (void *) key;
1950
1951         mutex_lock(&minor->debugfs_lock);
1952         list_add(&node->list, &minor->debugfs_list);
1953         mutex_unlock(&minor->debugfs_lock);
1954
1955         return 0;
1956 }
1957
1958 static int i915_forcewake_open(struct inode *inode, struct file *file)
1959 {
1960         struct drm_device *dev = inode->i_private;
1961         struct drm_i915_private *dev_priv = dev->dev_private;
1962
1963         if (INTEL_INFO(dev)->gen < 6)
1964                 return 0;
1965
1966         gen6_gt_force_wake_get(dev_priv);
1967
1968         return 0;
1969 }
1970
1971 static int i915_forcewake_release(struct inode *inode, struct file *file)
1972 {
1973         struct drm_device *dev = inode->i_private;
1974         struct drm_i915_private *dev_priv = dev->dev_private;
1975
1976         if (INTEL_INFO(dev)->gen < 6)
1977                 return 0;
1978
1979         gen6_gt_force_wake_put(dev_priv);
1980
1981         return 0;
1982 }
1983
1984 static const struct file_operations i915_forcewake_fops = {
1985         .owner = THIS_MODULE,
1986         .open = i915_forcewake_open,
1987         .release = i915_forcewake_release,
1988 };
1989
1990 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1991 {
1992         struct drm_device *dev = minor->dev;
1993         struct dentry *ent;
1994
1995         ent = debugfs_create_file("i915_forcewake_user",
1996                                   S_IRUSR,
1997                                   root, dev,
1998                                   &i915_forcewake_fops);
1999         if (IS_ERR(ent))
2000                 return PTR_ERR(ent);
2001
2002         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2003 }
2004
2005 static int i915_debugfs_create(struct dentry *root,
2006                                struct drm_minor *minor,
2007                                const char *name,
2008                                const struct file_operations *fops)
2009 {
2010         struct drm_device *dev = minor->dev;
2011         struct dentry *ent;
2012
2013         ent = debugfs_create_file(name,
2014                                   S_IRUGO | S_IWUSR,
2015                                   root, dev,
2016                                   fops);
2017         if (IS_ERR(ent))
2018                 return PTR_ERR(ent);
2019
2020         return drm_add_fake_info_node(minor, ent, fops);
2021 }
2022
2023 static struct drm_info_list i915_debugfs_list[] = {
2024         {"i915_capabilities", i915_capabilities, 0},
2025         {"i915_gem_objects", i915_gem_object_info, 0},
2026         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2027         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2028         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2029         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2030         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2031         {"i915_gem_request", i915_gem_request_info, 0},
2032         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2033         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2034         {"i915_gem_interrupt", i915_interrupt_info, 0},
2035         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2036         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2037         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2038         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2039         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2040         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2041         {"i915_inttoext_table", i915_inttoext_table, 0},
2042         {"i915_drpc_info", i915_drpc_info, 0},
2043         {"i915_emon_status", i915_emon_status, 0},
2044         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2045         {"i915_gfxec", i915_gfxec, 0},
2046         {"i915_fbc_status", i915_fbc_status, 0},
2047         {"i915_sr_status", i915_sr_status, 0},
2048         {"i915_opregion", i915_opregion, 0},
2049         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2050         {"i915_context_status", i915_context_status, 0},
2051         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2052         {"i915_swizzle_info", i915_swizzle_info, 0},
2053         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2054         {"i915_dpio", i915_dpio_info, 0},
2055 };
2056 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2057
2058 int i915_debugfs_init(struct drm_minor *minor)
2059 {
2060         int ret;
2061
2062         ret = i915_debugfs_create(minor->debugfs_root, minor,
2063                                   "i915_wedged",
2064                                   &i915_wedged_fops);
2065         if (ret)
2066                 return ret;
2067
2068         ret = i915_forcewake_create(minor->debugfs_root, minor);
2069         if (ret)
2070                 return ret;
2071
2072         ret = i915_debugfs_create(minor->debugfs_root, minor,
2073                                   "i915_max_freq",
2074                                   &i915_max_freq_fops);
2075         if (ret)
2076                 return ret;
2077
2078         ret = i915_debugfs_create(minor->debugfs_root, minor,
2079                                   "i915_min_freq",
2080                                   &i915_min_freq_fops);
2081         if (ret)
2082                 return ret;
2083
2084         ret = i915_debugfs_create(minor->debugfs_root, minor,
2085                                   "i915_cache_sharing",
2086                                   &i915_cache_sharing_fops);
2087         if (ret)
2088                 return ret;
2089
2090         ret = i915_debugfs_create(minor->debugfs_root, minor,
2091                                   "i915_ring_stop",
2092                                   &i915_ring_stop_fops);
2093         if (ret)
2094                 return ret;
2095
2096         ret = i915_debugfs_create(minor->debugfs_root, minor,
2097                                   "i915_error_state",
2098                                   &i915_error_state_fops);
2099         if (ret)
2100                 return ret;
2101
2102         return drm_debugfs_create_files(i915_debugfs_list,
2103                                         I915_DEBUGFS_ENTRIES,
2104                                         minor->debugfs_root, minor);
2105 }
2106
2107 void i915_debugfs_cleanup(struct drm_minor *minor)
2108 {
2109         drm_debugfs_remove_files(i915_debugfs_list,
2110                                  I915_DEBUGFS_ENTRIES, minor);
2111         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2112                                  1, minor);
2113         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2114                                  1, minor);
2115         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2116                                  1, minor);
2117         drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2118                                  1, minor);
2119         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2120                                  1, minor);
2121         drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2122                                  1, minor);
2123         drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2124                                  1, minor);
2125 }
2126
2127 #endif /* CONFIG_DEBUG_FS */