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Merge tag 'stable/for-linus-3.11-rc6-tag' of git://git.kernel.org/pub/scm/linux/kerne...
[deliverable/linux.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 <generated/utsrelease.h>
34 #include <drm/drmP.h>
35 #include "intel_drv.h"
36 #include "intel_ringbuffer.h"
37 #include <drm/i915_drm.h>
38 #include "i915_drv.h"
39
40 #define DRM_I915_RING_DEBUG 1
41
42
43 #if defined(CONFIG_DEBUG_FS)
44
45 enum {
46 ACTIVE_LIST,
47 INACTIVE_LIST,
48 PINNED_LIST,
49 };
50
51 static const char *yesno(int v)
52 {
53 return v ? "yes" : "no";
54 }
55
56 static int i915_capabilities(struct seq_file *m, void *data)
57 {
58 struct drm_info_node *node = (struct drm_info_node *) m->private;
59 struct drm_device *dev = node->minor->dev;
60 const struct intel_device_info *info = INTEL_INFO(dev);
61
62 seq_printf(m, "gen: %d\n", info->gen);
63 seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
64 #define PRINT_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
65 #define SEP_SEMICOLON ;
66 DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_SEMICOLON);
67 #undef PRINT_FLAG
68 #undef SEP_SEMICOLON
69
70 return 0;
71 }
72
73 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
74 {
75 if (obj->user_pin_count > 0)
76 return "P";
77 else if (obj->pin_count > 0)
78 return "p";
79 else
80 return " ";
81 }
82
83 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
84 {
85 switch (obj->tiling_mode) {
86 default:
87 case I915_TILING_NONE: return " ";
88 case I915_TILING_X: return "X";
89 case I915_TILING_Y: return "Y";
90 }
91 }
92
93 static const char *cache_level_str(int type)
94 {
95 switch (type) {
96 case I915_CACHE_NONE: return " uncached";
97 case I915_CACHE_LLC: return " snooped (LLC)";
98 case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
99 default: return "";
100 }
101 }
102
103 static void
104 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
105 {
106 seq_printf(m, "%pK: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s",
107 &obj->base,
108 get_pin_flag(obj),
109 get_tiling_flag(obj),
110 obj->base.size / 1024,
111 obj->base.read_domains,
112 obj->base.write_domain,
113 obj->last_read_seqno,
114 obj->last_write_seqno,
115 obj->last_fenced_seqno,
116 cache_level_str(obj->cache_level),
117 obj->dirty ? " dirty" : "",
118 obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
119 if (obj->base.name)
120 seq_printf(m, " (name: %d)", obj->base.name);
121 if (obj->pin_count)
122 seq_printf(m, " (pinned x %d)", obj->pin_count);
123 if (obj->fence_reg != I915_FENCE_REG_NONE)
124 seq_printf(m, " (fence: %d)", obj->fence_reg);
125 if (obj->gtt_space != NULL)
126 seq_printf(m, " (gtt offset: %08x, size: %08x)",
127 obj->gtt_offset, (unsigned int)obj->gtt_space->size);
128 if (obj->stolen)
129 seq_printf(m, " (stolen: %08lx)", obj->stolen->start);
130 if (obj->pin_mappable || obj->fault_mappable) {
131 char s[3], *t = s;
132 if (obj->pin_mappable)
133 *t++ = 'p';
134 if (obj->fault_mappable)
135 *t++ = 'f';
136 *t = '\0';
137 seq_printf(m, " (%s mappable)", s);
138 }
139 if (obj->ring != NULL)
140 seq_printf(m, " (%s)", obj->ring->name);
141 }
142
143 static int i915_gem_object_list_info(struct seq_file *m, void *data)
144 {
145 struct drm_info_node *node = (struct drm_info_node *) m->private;
146 uintptr_t list = (uintptr_t) node->info_ent->data;
147 struct list_head *head;
148 struct drm_device *dev = node->minor->dev;
149 drm_i915_private_t *dev_priv = dev->dev_private;
150 struct drm_i915_gem_object *obj;
151 size_t total_obj_size, total_gtt_size;
152 int count, ret;
153
154 ret = mutex_lock_interruptible(&dev->struct_mutex);
155 if (ret)
156 return ret;
157
158 switch (list) {
159 case ACTIVE_LIST:
160 seq_printf(m, "Active:\n");
161 head = &dev_priv->mm.active_list;
162 break;
163 case INACTIVE_LIST:
164 seq_printf(m, "Inactive:\n");
165 head = &dev_priv->mm.inactive_list;
166 break;
167 default:
168 mutex_unlock(&dev->struct_mutex);
169 return -EINVAL;
170 }
171
172 total_obj_size = total_gtt_size = count = 0;
173 list_for_each_entry(obj, head, mm_list) {
174 seq_printf(m, " ");
175 describe_obj(m, obj);
176 seq_printf(m, "\n");
177 total_obj_size += obj->base.size;
178 total_gtt_size += obj->gtt_space->size;
179 count++;
180 }
181 mutex_unlock(&dev->struct_mutex);
182
183 seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
184 count, total_obj_size, total_gtt_size);
185 return 0;
186 }
187
188 #define count_objects(list, member) do { \
189 list_for_each_entry(obj, list, member) { \
190 size += obj->gtt_space->size; \
191 ++count; \
192 if (obj->map_and_fenceable) { \
193 mappable_size += obj->gtt_space->size; \
194 ++mappable_count; \
195 } \
196 } \
197 } while (0)
198
199 struct file_stats {
200 int count;
201 size_t total, active, inactive, unbound;
202 };
203
204 static int per_file_stats(int id, void *ptr, void *data)
205 {
206 struct drm_i915_gem_object *obj = ptr;
207 struct file_stats *stats = data;
208
209 stats->count++;
210 stats->total += obj->base.size;
211
212 if (obj->gtt_space) {
213 if (!list_empty(&obj->ring_list))
214 stats->active += obj->base.size;
215 else
216 stats->inactive += obj->base.size;
217 } else {
218 if (!list_empty(&obj->global_list))
219 stats->unbound += obj->base.size;
220 }
221
222 return 0;
223 }
224
225 static int i915_gem_object_info(struct seq_file *m, void* data)
226 {
227 struct drm_info_node *node = (struct drm_info_node *) m->private;
228 struct drm_device *dev = node->minor->dev;
229 struct drm_i915_private *dev_priv = dev->dev_private;
230 u32 count, mappable_count, purgeable_count;
231 size_t size, mappable_size, purgeable_size;
232 struct drm_i915_gem_object *obj;
233 struct drm_file *file;
234 int ret;
235
236 ret = mutex_lock_interruptible(&dev->struct_mutex);
237 if (ret)
238 return ret;
239
240 seq_printf(m, "%u objects, %zu bytes\n",
241 dev_priv->mm.object_count,
242 dev_priv->mm.object_memory);
243
244 size = count = mappable_size = mappable_count = 0;
245 count_objects(&dev_priv->mm.bound_list, global_list);
246 seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
247 count, mappable_count, size, mappable_size);
248
249 size = count = mappable_size = mappable_count = 0;
250 count_objects(&dev_priv->mm.active_list, mm_list);
251 seq_printf(m, " %u [%u] active objects, %zu [%zu] bytes\n",
252 count, mappable_count, size, mappable_size);
253
254 size = count = mappable_size = mappable_count = 0;
255 count_objects(&dev_priv->mm.inactive_list, mm_list);
256 seq_printf(m, " %u [%u] inactive objects, %zu [%zu] bytes\n",
257 count, mappable_count, size, mappable_size);
258
259 size = count = purgeable_size = purgeable_count = 0;
260 list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
261 size += obj->base.size, ++count;
262 if (obj->madv == I915_MADV_DONTNEED)
263 purgeable_size += obj->base.size, ++purgeable_count;
264 }
265 seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
266
267 size = count = mappable_size = mappable_count = 0;
268 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
269 if (obj->fault_mappable) {
270 size += obj->gtt_space->size;
271 ++count;
272 }
273 if (obj->pin_mappable) {
274 mappable_size += obj->gtt_space->size;
275 ++mappable_count;
276 }
277 if (obj->madv == I915_MADV_DONTNEED) {
278 purgeable_size += obj->base.size;
279 ++purgeable_count;
280 }
281 }
282 seq_printf(m, "%u purgeable objects, %zu bytes\n",
283 purgeable_count, purgeable_size);
284 seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
285 mappable_count, mappable_size);
286 seq_printf(m, "%u fault mappable objects, %zu bytes\n",
287 count, size);
288
289 seq_printf(m, "%zu [%lu] gtt total\n",
290 dev_priv->gtt.total,
291 dev_priv->gtt.mappable_end - dev_priv->gtt.start);
292
293 seq_printf(m, "\n");
294 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
295 struct file_stats stats;
296
297 memset(&stats, 0, sizeof(stats));
298 idr_for_each(&file->object_idr, per_file_stats, &stats);
299 seq_printf(m, "%s: %u objects, %zu bytes (%zu active, %zu inactive, %zu unbound)\n",
300 get_pid_task(file->pid, PIDTYPE_PID)->comm,
301 stats.count,
302 stats.total,
303 stats.active,
304 stats.inactive,
305 stats.unbound);
306 }
307
308 mutex_unlock(&dev->struct_mutex);
309
310 return 0;
311 }
312
313 static int i915_gem_gtt_info(struct seq_file *m, void* data)
314 {
315 struct drm_info_node *node = (struct drm_info_node *) m->private;
316 struct drm_device *dev = node->minor->dev;
317 uintptr_t list = (uintptr_t) node->info_ent->data;
318 struct drm_i915_private *dev_priv = dev->dev_private;
319 struct drm_i915_gem_object *obj;
320 size_t total_obj_size, total_gtt_size;
321 int count, ret;
322
323 ret = mutex_lock_interruptible(&dev->struct_mutex);
324 if (ret)
325 return ret;
326
327 total_obj_size = total_gtt_size = count = 0;
328 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
329 if (list == PINNED_LIST && obj->pin_count == 0)
330 continue;
331
332 seq_printf(m, " ");
333 describe_obj(m, obj);
334 seq_printf(m, "\n");
335 total_obj_size += obj->base.size;
336 total_gtt_size += obj->gtt_space->size;
337 count++;
338 }
339
340 mutex_unlock(&dev->struct_mutex);
341
342 seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
343 count, total_obj_size, total_gtt_size);
344
345 return 0;
346 }
347
348 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
349 {
350 struct drm_info_node *node = (struct drm_info_node *) m->private;
351 struct drm_device *dev = node->minor->dev;
352 unsigned long flags;
353 struct intel_crtc *crtc;
354
355 list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
356 const char pipe = pipe_name(crtc->pipe);
357 const char plane = plane_name(crtc->plane);
358 struct intel_unpin_work *work;
359
360 spin_lock_irqsave(&dev->event_lock, flags);
361 work = crtc->unpin_work;
362 if (work == NULL) {
363 seq_printf(m, "No flip due on pipe %c (plane %c)\n",
364 pipe, plane);
365 } else {
366 if (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
367 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
368 pipe, plane);
369 } else {
370 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
371 pipe, plane);
372 }
373 if (work->enable_stall_check)
374 seq_printf(m, "Stall check enabled, ");
375 else
376 seq_printf(m, "Stall check waiting for page flip ioctl, ");
377 seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
378
379 if (work->old_fb_obj) {
380 struct drm_i915_gem_object *obj = work->old_fb_obj;
381 if (obj)
382 seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
383 }
384 if (work->pending_flip_obj) {
385 struct drm_i915_gem_object *obj = work->pending_flip_obj;
386 if (obj)
387 seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
388 }
389 }
390 spin_unlock_irqrestore(&dev->event_lock, flags);
391 }
392
393 return 0;
394 }
395
396 static int i915_gem_request_info(struct seq_file *m, void *data)
397 {
398 struct drm_info_node *node = (struct drm_info_node *) m->private;
399 struct drm_device *dev = node->minor->dev;
400 drm_i915_private_t *dev_priv = dev->dev_private;
401 struct intel_ring_buffer *ring;
402 struct drm_i915_gem_request *gem_request;
403 int ret, count, i;
404
405 ret = mutex_lock_interruptible(&dev->struct_mutex);
406 if (ret)
407 return ret;
408
409 count = 0;
410 for_each_ring(ring, dev_priv, i) {
411 if (list_empty(&ring->request_list))
412 continue;
413
414 seq_printf(m, "%s requests:\n", ring->name);
415 list_for_each_entry(gem_request,
416 &ring->request_list,
417 list) {
418 seq_printf(m, " %d @ %d\n",
419 gem_request->seqno,
420 (int) (jiffies - gem_request->emitted_jiffies));
421 }
422 count++;
423 }
424 mutex_unlock(&dev->struct_mutex);
425
426 if (count == 0)
427 seq_printf(m, "No requests\n");
428
429 return 0;
430 }
431
432 static void i915_ring_seqno_info(struct seq_file *m,
433 struct intel_ring_buffer *ring)
434 {
435 if (ring->get_seqno) {
436 seq_printf(m, "Current sequence (%s): %u\n",
437 ring->name, ring->get_seqno(ring, false));
438 }
439 }
440
441 static int i915_gem_seqno_info(struct seq_file *m, void *data)
442 {
443 struct drm_info_node *node = (struct drm_info_node *) m->private;
444 struct drm_device *dev = node->minor->dev;
445 drm_i915_private_t *dev_priv = dev->dev_private;
446 struct intel_ring_buffer *ring;
447 int ret, i;
448
449 ret = mutex_lock_interruptible(&dev->struct_mutex);
450 if (ret)
451 return ret;
452
453 for_each_ring(ring, dev_priv, i)
454 i915_ring_seqno_info(m, ring);
455
456 mutex_unlock(&dev->struct_mutex);
457
458 return 0;
459 }
460
461
462 static int i915_interrupt_info(struct seq_file *m, void *data)
463 {
464 struct drm_info_node *node = (struct drm_info_node *) m->private;
465 struct drm_device *dev = node->minor->dev;
466 drm_i915_private_t *dev_priv = dev->dev_private;
467 struct intel_ring_buffer *ring;
468 int ret, i, pipe;
469
470 ret = mutex_lock_interruptible(&dev->struct_mutex);
471 if (ret)
472 return ret;
473
474 if (IS_VALLEYVIEW(dev)) {
475 seq_printf(m, "Display IER:\t%08x\n",
476 I915_READ(VLV_IER));
477 seq_printf(m, "Display IIR:\t%08x\n",
478 I915_READ(VLV_IIR));
479 seq_printf(m, "Display IIR_RW:\t%08x\n",
480 I915_READ(VLV_IIR_RW));
481 seq_printf(m, "Display IMR:\t%08x\n",
482 I915_READ(VLV_IMR));
483 for_each_pipe(pipe)
484 seq_printf(m, "Pipe %c stat:\t%08x\n",
485 pipe_name(pipe),
486 I915_READ(PIPESTAT(pipe)));
487
488 seq_printf(m, "Master IER:\t%08x\n",
489 I915_READ(VLV_MASTER_IER));
490
491 seq_printf(m, "Render IER:\t%08x\n",
492 I915_READ(GTIER));
493 seq_printf(m, "Render IIR:\t%08x\n",
494 I915_READ(GTIIR));
495 seq_printf(m, "Render IMR:\t%08x\n",
496 I915_READ(GTIMR));
497
498 seq_printf(m, "PM IER:\t\t%08x\n",
499 I915_READ(GEN6_PMIER));
500 seq_printf(m, "PM IIR:\t\t%08x\n",
501 I915_READ(GEN6_PMIIR));
502 seq_printf(m, "PM IMR:\t\t%08x\n",
503 I915_READ(GEN6_PMIMR));
504
505 seq_printf(m, "Port hotplug:\t%08x\n",
506 I915_READ(PORT_HOTPLUG_EN));
507 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
508 I915_READ(VLV_DPFLIPSTAT));
509 seq_printf(m, "DPINVGTT:\t%08x\n",
510 I915_READ(DPINVGTT));
511
512 } else if (!HAS_PCH_SPLIT(dev)) {
513 seq_printf(m, "Interrupt enable: %08x\n",
514 I915_READ(IER));
515 seq_printf(m, "Interrupt identity: %08x\n",
516 I915_READ(IIR));
517 seq_printf(m, "Interrupt mask: %08x\n",
518 I915_READ(IMR));
519 for_each_pipe(pipe)
520 seq_printf(m, "Pipe %c stat: %08x\n",
521 pipe_name(pipe),
522 I915_READ(PIPESTAT(pipe)));
523 } else {
524 seq_printf(m, "North Display Interrupt enable: %08x\n",
525 I915_READ(DEIER));
526 seq_printf(m, "North Display Interrupt identity: %08x\n",
527 I915_READ(DEIIR));
528 seq_printf(m, "North Display Interrupt mask: %08x\n",
529 I915_READ(DEIMR));
530 seq_printf(m, "South Display Interrupt enable: %08x\n",
531 I915_READ(SDEIER));
532 seq_printf(m, "South Display Interrupt identity: %08x\n",
533 I915_READ(SDEIIR));
534 seq_printf(m, "South Display Interrupt mask: %08x\n",
535 I915_READ(SDEIMR));
536 seq_printf(m, "Graphics Interrupt enable: %08x\n",
537 I915_READ(GTIER));
538 seq_printf(m, "Graphics Interrupt identity: %08x\n",
539 I915_READ(GTIIR));
540 seq_printf(m, "Graphics Interrupt mask: %08x\n",
541 I915_READ(GTIMR));
542 }
543 seq_printf(m, "Interrupts received: %d\n",
544 atomic_read(&dev_priv->irq_received));
545 for_each_ring(ring, dev_priv, i) {
546 if (IS_GEN6(dev) || IS_GEN7(dev)) {
547 seq_printf(m,
548 "Graphics Interrupt mask (%s): %08x\n",
549 ring->name, I915_READ_IMR(ring));
550 }
551 i915_ring_seqno_info(m, ring);
552 }
553 mutex_unlock(&dev->struct_mutex);
554
555 return 0;
556 }
557
558 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
559 {
560 struct drm_info_node *node = (struct drm_info_node *) m->private;
561 struct drm_device *dev = node->minor->dev;
562 drm_i915_private_t *dev_priv = dev->dev_private;
563 int i, ret;
564
565 ret = mutex_lock_interruptible(&dev->struct_mutex);
566 if (ret)
567 return ret;
568
569 seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
570 seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
571 for (i = 0; i < dev_priv->num_fence_regs; i++) {
572 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
573
574 seq_printf(m, "Fence %d, pin count = %d, object = ",
575 i, dev_priv->fence_regs[i].pin_count);
576 if (obj == NULL)
577 seq_printf(m, "unused");
578 else
579 describe_obj(m, obj);
580 seq_printf(m, "\n");
581 }
582
583 mutex_unlock(&dev->struct_mutex);
584 return 0;
585 }
586
587 static int i915_hws_info(struct seq_file *m, void *data)
588 {
589 struct drm_info_node *node = (struct drm_info_node *) m->private;
590 struct drm_device *dev = node->minor->dev;
591 drm_i915_private_t *dev_priv = dev->dev_private;
592 struct intel_ring_buffer *ring;
593 const u32 *hws;
594 int i;
595
596 ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
597 hws = ring->status_page.page_addr;
598 if (hws == NULL)
599 return 0;
600
601 for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
602 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
603 i * 4,
604 hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
605 }
606 return 0;
607 }
608
609 static const char *ring_str(int ring)
610 {
611 switch (ring) {
612 case RCS: return "render";
613 case VCS: return "bsd";
614 case BCS: return "blt";
615 case VECS: return "vebox";
616 default: return "";
617 }
618 }
619
620 static const char *pin_flag(int pinned)
621 {
622 if (pinned > 0)
623 return " P";
624 else if (pinned < 0)
625 return " p";
626 else
627 return "";
628 }
629
630 static const char *tiling_flag(int tiling)
631 {
632 switch (tiling) {
633 default:
634 case I915_TILING_NONE: return "";
635 case I915_TILING_X: return " X";
636 case I915_TILING_Y: return " Y";
637 }
638 }
639
640 static const char *dirty_flag(int dirty)
641 {
642 return dirty ? " dirty" : "";
643 }
644
645 static const char *purgeable_flag(int purgeable)
646 {
647 return purgeable ? " purgeable" : "";
648 }
649
650 static bool __i915_error_ok(struct drm_i915_error_state_buf *e)
651 {
652
653 if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {
654 e->err = -ENOSPC;
655 return false;
656 }
657
658 if (e->bytes == e->size - 1 || e->err)
659 return false;
660
661 return true;
662 }
663
664 static bool __i915_error_seek(struct drm_i915_error_state_buf *e,
665 unsigned len)
666 {
667 if (e->pos + len <= e->start) {
668 e->pos += len;
669 return false;
670 }
671
672 /* First vsnprintf needs to fit in its entirety for memmove */
673 if (len >= e->size) {
674 e->err = -EIO;
675 return false;
676 }
677
678 return true;
679 }
680
681 static void __i915_error_advance(struct drm_i915_error_state_buf *e,
682 unsigned len)
683 {
684 /* If this is first printf in this window, adjust it so that
685 * start position matches start of the buffer
686 */
687
688 if (e->pos < e->start) {
689 const size_t off = e->start - e->pos;
690
691 /* Should not happen but be paranoid */
692 if (off > len || e->bytes) {
693 e->err = -EIO;
694 return;
695 }
696
697 memmove(e->buf, e->buf + off, len - off);
698 e->bytes = len - off;
699 e->pos = e->start;
700 return;
701 }
702
703 e->bytes += len;
704 e->pos += len;
705 }
706
707 static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
708 const char *f, va_list args)
709 {
710 unsigned len;
711
712 if (!__i915_error_ok(e))
713 return;
714
715 /* Seek the first printf which is hits start position */
716 if (e->pos < e->start) {
717 len = vsnprintf(NULL, 0, f, args);
718 if (!__i915_error_seek(e, len))
719 return;
720 }
721
722 len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
723 if (len >= e->size - e->bytes)
724 len = e->size - e->bytes - 1;
725
726 __i915_error_advance(e, len);
727 }
728
729 static void i915_error_puts(struct drm_i915_error_state_buf *e,
730 const char *str)
731 {
732 unsigned len;
733
734 if (!__i915_error_ok(e))
735 return;
736
737 len = strlen(str);
738
739 /* Seek the first printf which is hits start position */
740 if (e->pos < e->start) {
741 if (!__i915_error_seek(e, len))
742 return;
743 }
744
745 if (len >= e->size - e->bytes)
746 len = e->size - e->bytes - 1;
747 memcpy(e->buf + e->bytes, str, len);
748
749 __i915_error_advance(e, len);
750 }
751
752 void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
753 {
754 va_list args;
755
756 va_start(args, f);
757 i915_error_vprintf(e, f, args);
758 va_end(args);
759 }
760
761 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
762 #define err_puts(e, s) i915_error_puts(e, s)
763
764 static void print_error_buffers(struct drm_i915_error_state_buf *m,
765 const char *name,
766 struct drm_i915_error_buffer *err,
767 int count)
768 {
769 err_printf(m, "%s [%d]:\n", name, count);
770
771 while (count--) {
772 err_printf(m, " %08x %8u %02x %02x %x %x",
773 err->gtt_offset,
774 err->size,
775 err->read_domains,
776 err->write_domain,
777 err->rseqno, err->wseqno);
778 err_puts(m, pin_flag(err->pinned));
779 err_puts(m, tiling_flag(err->tiling));
780 err_puts(m, dirty_flag(err->dirty));
781 err_puts(m, purgeable_flag(err->purgeable));
782 err_puts(m, err->ring != -1 ? " " : "");
783 err_puts(m, ring_str(err->ring));
784 err_puts(m, cache_level_str(err->cache_level));
785
786 if (err->name)
787 err_printf(m, " (name: %d)", err->name);
788 if (err->fence_reg != I915_FENCE_REG_NONE)
789 err_printf(m, " (fence: %d)", err->fence_reg);
790
791 err_puts(m, "\n");
792 err++;
793 }
794 }
795
796 static void i915_ring_error_state(struct drm_i915_error_state_buf *m,
797 struct drm_device *dev,
798 struct drm_i915_error_state *error,
799 unsigned ring)
800 {
801 BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
802 err_printf(m, "%s command stream:\n", ring_str(ring));
803 err_printf(m, " HEAD: 0x%08x\n", error->head[ring]);
804 err_printf(m, " TAIL: 0x%08x\n", error->tail[ring]);
805 err_printf(m, " CTL: 0x%08x\n", error->ctl[ring]);
806 err_printf(m, " ACTHD: 0x%08x\n", error->acthd[ring]);
807 err_printf(m, " IPEIR: 0x%08x\n", error->ipeir[ring]);
808 err_printf(m, " IPEHR: 0x%08x\n", error->ipehr[ring]);
809 err_printf(m, " INSTDONE: 0x%08x\n", error->instdone[ring]);
810 if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
811 err_printf(m, " BBADDR: 0x%08llx\n", error->bbaddr);
812
813 if (INTEL_INFO(dev)->gen >= 4)
814 err_printf(m, " INSTPS: 0x%08x\n", error->instps[ring]);
815 err_printf(m, " INSTPM: 0x%08x\n", error->instpm[ring]);
816 err_printf(m, " FADDR: 0x%08x\n", error->faddr[ring]);
817 if (INTEL_INFO(dev)->gen >= 6) {
818 err_printf(m, " RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
819 err_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
820 err_printf(m, " SYNC_0: 0x%08x [last synced 0x%08x]\n",
821 error->semaphore_mboxes[ring][0],
822 error->semaphore_seqno[ring][0]);
823 err_printf(m, " SYNC_1: 0x%08x [last synced 0x%08x]\n",
824 error->semaphore_mboxes[ring][1],
825 error->semaphore_seqno[ring][1]);
826 }
827 err_printf(m, " seqno: 0x%08x\n", error->seqno[ring]);
828 err_printf(m, " waiting: %s\n", yesno(error->waiting[ring]));
829 err_printf(m, " ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
830 err_printf(m, " ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
831 }
832
833 struct i915_error_state_file_priv {
834 struct drm_device *dev;
835 struct drm_i915_error_state *error;
836 };
837
838
839 static int i915_error_state(struct i915_error_state_file_priv *error_priv,
840 struct drm_i915_error_state_buf *m)
841
842 {
843 struct drm_device *dev = error_priv->dev;
844 drm_i915_private_t *dev_priv = dev->dev_private;
845 struct drm_i915_error_state *error = error_priv->error;
846 struct intel_ring_buffer *ring;
847 int i, j, page, offset, elt;
848
849 if (!error) {
850 err_printf(m, "no error state collected\n");
851 return 0;
852 }
853
854 err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
855 error->time.tv_usec);
856 err_printf(m, "Kernel: " UTS_RELEASE "\n");
857 err_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
858 err_printf(m, "EIR: 0x%08x\n", error->eir);
859 err_printf(m, "IER: 0x%08x\n", error->ier);
860 err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
861 err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
862 err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
863 err_printf(m, "CCID: 0x%08x\n", error->ccid);
864
865 for (i = 0; i < dev_priv->num_fence_regs; i++)
866 err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
867
868 for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
869 err_printf(m, " INSTDONE_%d: 0x%08x\n", i,
870 error->extra_instdone[i]);
871
872 if (INTEL_INFO(dev)->gen >= 6) {
873 err_printf(m, "ERROR: 0x%08x\n", error->error);
874 err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
875 }
876
877 if (INTEL_INFO(dev)->gen == 7)
878 err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
879
880 for_each_ring(ring, dev_priv, i)
881 i915_ring_error_state(m, dev, error, i);
882
883 if (error->active_bo)
884 print_error_buffers(m, "Active",
885 error->active_bo,
886 error->active_bo_count);
887
888 if (error->pinned_bo)
889 print_error_buffers(m, "Pinned",
890 error->pinned_bo,
891 error->pinned_bo_count);
892
893 for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
894 struct drm_i915_error_object *obj;
895
896 if ((obj = error->ring[i].batchbuffer)) {
897 err_printf(m, "%s --- gtt_offset = 0x%08x\n",
898 dev_priv->ring[i].name,
899 obj->gtt_offset);
900 offset = 0;
901 for (page = 0; page < obj->page_count; page++) {
902 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
903 err_printf(m, "%08x : %08x\n", offset,
904 obj->pages[page][elt]);
905 offset += 4;
906 }
907 }
908 }
909
910 if (error->ring[i].num_requests) {
911 err_printf(m, "%s --- %d requests\n",
912 dev_priv->ring[i].name,
913 error->ring[i].num_requests);
914 for (j = 0; j < error->ring[i].num_requests; j++) {
915 err_printf(m, " seqno 0x%08x, emitted %ld, tail 0x%08x\n",
916 error->ring[i].requests[j].seqno,
917 error->ring[i].requests[j].jiffies,
918 error->ring[i].requests[j].tail);
919 }
920 }
921
922 if ((obj = error->ring[i].ringbuffer)) {
923 err_printf(m, "%s --- ringbuffer = 0x%08x\n",
924 dev_priv->ring[i].name,
925 obj->gtt_offset);
926 offset = 0;
927 for (page = 0; page < obj->page_count; page++) {
928 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
929 err_printf(m, "%08x : %08x\n",
930 offset,
931 obj->pages[page][elt]);
932 offset += 4;
933 }
934 }
935 }
936
937 obj = error->ring[i].ctx;
938 if (obj) {
939 err_printf(m, "%s --- HW Context = 0x%08x\n",
940 dev_priv->ring[i].name,
941 obj->gtt_offset);
942 offset = 0;
943 for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
944 err_printf(m, "[%04x] %08x %08x %08x %08x\n",
945 offset,
946 obj->pages[0][elt],
947 obj->pages[0][elt+1],
948 obj->pages[0][elt+2],
949 obj->pages[0][elt+3]);
950 offset += 16;
951 }
952 }
953 }
954
955 if (error->overlay)
956 intel_overlay_print_error_state(m, error->overlay);
957
958 if (error->display)
959 intel_display_print_error_state(m, dev, error->display);
960
961 return 0;
962 }
963
964 static ssize_t
965 i915_error_state_write(struct file *filp,
966 const char __user *ubuf,
967 size_t cnt,
968 loff_t *ppos)
969 {
970 struct i915_error_state_file_priv *error_priv = filp->private_data;
971 struct drm_device *dev = error_priv->dev;
972 int ret;
973
974 DRM_DEBUG_DRIVER("Resetting error state\n");
975
976 ret = mutex_lock_interruptible(&dev->struct_mutex);
977 if (ret)
978 return ret;
979
980 i915_destroy_error_state(dev);
981 mutex_unlock(&dev->struct_mutex);
982
983 return cnt;
984 }
985
986 static int i915_error_state_open(struct inode *inode, struct file *file)
987 {
988 struct drm_device *dev = inode->i_private;
989 drm_i915_private_t *dev_priv = dev->dev_private;
990 struct i915_error_state_file_priv *error_priv;
991 unsigned long flags;
992
993 error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
994 if (!error_priv)
995 return -ENOMEM;
996
997 error_priv->dev = dev;
998
999 spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
1000 error_priv->error = dev_priv->gpu_error.first_error;
1001 if (error_priv->error)
1002 kref_get(&error_priv->error->ref);
1003 spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
1004
1005 file->private_data = error_priv;
1006
1007 return 0;
1008 }
1009
1010 static int i915_error_state_release(struct inode *inode, struct file *file)
1011 {
1012 struct i915_error_state_file_priv *error_priv = file->private_data;
1013
1014 if (error_priv->error)
1015 kref_put(&error_priv->error->ref, i915_error_state_free);
1016 kfree(error_priv);
1017
1018 return 0;
1019 }
1020
1021 static ssize_t i915_error_state_read(struct file *file, char __user *userbuf,
1022 size_t count, loff_t *pos)
1023 {
1024 struct i915_error_state_file_priv *error_priv = file->private_data;
1025 struct drm_i915_error_state_buf error_str;
1026 loff_t tmp_pos = 0;
1027 ssize_t ret_count = 0;
1028 int ret = 0;
1029
1030 memset(&error_str, 0, sizeof(error_str));
1031
1032 /* We need to have enough room to store any i915_error_state printf
1033 * so that we can move it to start position.
1034 */
1035 error_str.size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE;
1036 error_str.buf = kmalloc(error_str.size,
1037 GFP_TEMPORARY | __GFP_NORETRY | __GFP_NOWARN);
1038
1039 if (error_str.buf == NULL) {
1040 error_str.size = PAGE_SIZE;
1041 error_str.buf = kmalloc(error_str.size, GFP_TEMPORARY);
1042 }
1043
1044 if (error_str.buf == NULL) {
1045 error_str.size = 128;
1046 error_str.buf = kmalloc(error_str.size, GFP_TEMPORARY);
1047 }
1048
1049 if (error_str.buf == NULL)
1050 return -ENOMEM;
1051
1052 error_str.start = *pos;
1053
1054 ret = i915_error_state(error_priv, &error_str);
1055 if (ret)
1056 goto out;
1057
1058 if (error_str.bytes == 0 && error_str.err) {
1059 ret = error_str.err;
1060 goto out;
1061 }
1062
1063 ret_count = simple_read_from_buffer(userbuf, count, &tmp_pos,
1064 error_str.buf,
1065 error_str.bytes);
1066
1067 if (ret_count < 0)
1068 ret = ret_count;
1069 else
1070 *pos = error_str.start + ret_count;
1071 out:
1072 kfree(error_str.buf);
1073 return ret ?: ret_count;
1074 }
1075
1076 static const struct file_operations i915_error_state_fops = {
1077 .owner = THIS_MODULE,
1078 .open = i915_error_state_open,
1079 .read = i915_error_state_read,
1080 .write = i915_error_state_write,
1081 .llseek = default_llseek,
1082 .release = i915_error_state_release,
1083 };
1084
1085 static int
1086 i915_next_seqno_get(void *data, u64 *val)
1087 {
1088 struct drm_device *dev = data;
1089 drm_i915_private_t *dev_priv = dev->dev_private;
1090 int ret;
1091
1092 ret = mutex_lock_interruptible(&dev->struct_mutex);
1093 if (ret)
1094 return ret;
1095
1096 *val = dev_priv->next_seqno;
1097 mutex_unlock(&dev->struct_mutex);
1098
1099 return 0;
1100 }
1101
1102 static int
1103 i915_next_seqno_set(void *data, u64 val)
1104 {
1105 struct drm_device *dev = data;
1106 int ret;
1107
1108 ret = mutex_lock_interruptible(&dev->struct_mutex);
1109 if (ret)
1110 return ret;
1111
1112 ret = i915_gem_set_seqno(dev, val);
1113 mutex_unlock(&dev->struct_mutex);
1114
1115 return ret;
1116 }
1117
1118 DEFINE_SIMPLE_ATTRIBUTE(i915_next_seqno_fops,
1119 i915_next_seqno_get, i915_next_seqno_set,
1120 "0x%llx\n");
1121
1122 static int i915_rstdby_delays(struct seq_file *m, void *unused)
1123 {
1124 struct drm_info_node *node = (struct drm_info_node *) m->private;
1125 struct drm_device *dev = node->minor->dev;
1126 drm_i915_private_t *dev_priv = dev->dev_private;
1127 u16 crstanddelay;
1128 int ret;
1129
1130 ret = mutex_lock_interruptible(&dev->struct_mutex);
1131 if (ret)
1132 return ret;
1133
1134 crstanddelay = I915_READ16(CRSTANDVID);
1135
1136 mutex_unlock(&dev->struct_mutex);
1137
1138 seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
1139
1140 return 0;
1141 }
1142
1143 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
1144 {
1145 struct drm_info_node *node = (struct drm_info_node *) m->private;
1146 struct drm_device *dev = node->minor->dev;
1147 drm_i915_private_t *dev_priv = dev->dev_private;
1148 int ret;
1149
1150 if (IS_GEN5(dev)) {
1151 u16 rgvswctl = I915_READ16(MEMSWCTL);
1152 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
1153
1154 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
1155 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
1156 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
1157 MEMSTAT_VID_SHIFT);
1158 seq_printf(m, "Current P-state: %d\n",
1159 (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
1160 } else if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev)) {
1161 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
1162 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
1163 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
1164 u32 rpstat, cagf;
1165 u32 rpupei, rpcurup, rpprevup;
1166 u32 rpdownei, rpcurdown, rpprevdown;
1167 int max_freq;
1168
1169 /* RPSTAT1 is in the GT power well */
1170 ret = mutex_lock_interruptible(&dev->struct_mutex);
1171 if (ret)
1172 return ret;
1173
1174 gen6_gt_force_wake_get(dev_priv);
1175
1176 rpstat = I915_READ(GEN6_RPSTAT1);
1177 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
1178 rpcurup = I915_READ(GEN6_RP_CUR_UP);
1179 rpprevup = I915_READ(GEN6_RP_PREV_UP);
1180 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
1181 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
1182 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
1183 if (IS_HASWELL(dev))
1184 cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
1185 else
1186 cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
1187 cagf *= GT_FREQUENCY_MULTIPLIER;
1188
1189 gen6_gt_force_wake_put(dev_priv);
1190 mutex_unlock(&dev->struct_mutex);
1191
1192 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
1193 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
1194 seq_printf(m, "Render p-state ratio: %d\n",
1195 (gt_perf_status & 0xff00) >> 8);
1196 seq_printf(m, "Render p-state VID: %d\n",
1197 gt_perf_status & 0xff);
1198 seq_printf(m, "Render p-state limit: %d\n",
1199 rp_state_limits & 0xff);
1200 seq_printf(m, "CAGF: %dMHz\n", cagf);
1201 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
1202 GEN6_CURICONT_MASK);
1203 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
1204 GEN6_CURBSYTAVG_MASK);
1205 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
1206 GEN6_CURBSYTAVG_MASK);
1207 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
1208 GEN6_CURIAVG_MASK);
1209 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
1210 GEN6_CURBSYTAVG_MASK);
1211 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
1212 GEN6_CURBSYTAVG_MASK);
1213
1214 max_freq = (rp_state_cap & 0xff0000) >> 16;
1215 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
1216 max_freq * GT_FREQUENCY_MULTIPLIER);
1217
1218 max_freq = (rp_state_cap & 0xff00) >> 8;
1219 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
1220 max_freq * GT_FREQUENCY_MULTIPLIER);
1221
1222 max_freq = rp_state_cap & 0xff;
1223 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
1224 max_freq * GT_FREQUENCY_MULTIPLIER);
1225
1226 seq_printf(m, "Max overclocked frequency: %dMHz\n",
1227 dev_priv->rps.hw_max * GT_FREQUENCY_MULTIPLIER);
1228 } else if (IS_VALLEYVIEW(dev)) {
1229 u32 freq_sts, val;
1230
1231 mutex_lock(&dev_priv->rps.hw_lock);
1232 freq_sts = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
1233 seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
1234 seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
1235
1236 val = vlv_punit_read(dev_priv, PUNIT_FUSE_BUS1);
1237 seq_printf(m, "max GPU freq: %d MHz\n",
1238 vlv_gpu_freq(dev_priv->mem_freq, val));
1239
1240 val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM);
1241 seq_printf(m, "min GPU freq: %d MHz\n",
1242 vlv_gpu_freq(dev_priv->mem_freq, val));
1243
1244 seq_printf(m, "current GPU freq: %d MHz\n",
1245 vlv_gpu_freq(dev_priv->mem_freq,
1246 (freq_sts >> 8) & 0xff));
1247 mutex_unlock(&dev_priv->rps.hw_lock);
1248 } else {
1249 seq_printf(m, "no P-state info available\n");
1250 }
1251
1252 return 0;
1253 }
1254
1255 static int i915_delayfreq_table(struct seq_file *m, void *unused)
1256 {
1257 struct drm_info_node *node = (struct drm_info_node *) m->private;
1258 struct drm_device *dev = node->minor->dev;
1259 drm_i915_private_t *dev_priv = dev->dev_private;
1260 u32 delayfreq;
1261 int ret, i;
1262
1263 ret = mutex_lock_interruptible(&dev->struct_mutex);
1264 if (ret)
1265 return ret;
1266
1267 for (i = 0; i < 16; i++) {
1268 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
1269 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
1270 (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
1271 }
1272
1273 mutex_unlock(&dev->struct_mutex);
1274
1275 return 0;
1276 }
1277
1278 static inline int MAP_TO_MV(int map)
1279 {
1280 return 1250 - (map * 25);
1281 }
1282
1283 static int i915_inttoext_table(struct seq_file *m, void *unused)
1284 {
1285 struct drm_info_node *node = (struct drm_info_node *) m->private;
1286 struct drm_device *dev = node->minor->dev;
1287 drm_i915_private_t *dev_priv = dev->dev_private;
1288 u32 inttoext;
1289 int ret, i;
1290
1291 ret = mutex_lock_interruptible(&dev->struct_mutex);
1292 if (ret)
1293 return ret;
1294
1295 for (i = 1; i <= 32; i++) {
1296 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
1297 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
1298 }
1299
1300 mutex_unlock(&dev->struct_mutex);
1301
1302 return 0;
1303 }
1304
1305 static int ironlake_drpc_info(struct seq_file *m)
1306 {
1307 struct drm_info_node *node = (struct drm_info_node *) m->private;
1308 struct drm_device *dev = node->minor->dev;
1309 drm_i915_private_t *dev_priv = dev->dev_private;
1310 u32 rgvmodectl, rstdbyctl;
1311 u16 crstandvid;
1312 int ret;
1313
1314 ret = mutex_lock_interruptible(&dev->struct_mutex);
1315 if (ret)
1316 return ret;
1317
1318 rgvmodectl = I915_READ(MEMMODECTL);
1319 rstdbyctl = I915_READ(RSTDBYCTL);
1320 crstandvid = I915_READ16(CRSTANDVID);
1321
1322 mutex_unlock(&dev->struct_mutex);
1323
1324 seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1325 "yes" : "no");
1326 seq_printf(m, "Boost freq: %d\n",
1327 (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1328 MEMMODE_BOOST_FREQ_SHIFT);
1329 seq_printf(m, "HW control enabled: %s\n",
1330 rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1331 seq_printf(m, "SW control enabled: %s\n",
1332 rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1333 seq_printf(m, "Gated voltage change: %s\n",
1334 rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1335 seq_printf(m, "Starting frequency: P%d\n",
1336 (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1337 seq_printf(m, "Max P-state: P%d\n",
1338 (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1339 seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1340 seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1341 seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1342 seq_printf(m, "Render standby enabled: %s\n",
1343 (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1344 seq_printf(m, "Current RS state: ");
1345 switch (rstdbyctl & RSX_STATUS_MASK) {
1346 case RSX_STATUS_ON:
1347 seq_printf(m, "on\n");
1348 break;
1349 case RSX_STATUS_RC1:
1350 seq_printf(m, "RC1\n");
1351 break;
1352 case RSX_STATUS_RC1E:
1353 seq_printf(m, "RC1E\n");
1354 break;
1355 case RSX_STATUS_RS1:
1356 seq_printf(m, "RS1\n");
1357 break;
1358 case RSX_STATUS_RS2:
1359 seq_printf(m, "RS2 (RC6)\n");
1360 break;
1361 case RSX_STATUS_RS3:
1362 seq_printf(m, "RC3 (RC6+)\n");
1363 break;
1364 default:
1365 seq_printf(m, "unknown\n");
1366 break;
1367 }
1368
1369 return 0;
1370 }
1371
1372 static int gen6_drpc_info(struct seq_file *m)
1373 {
1374
1375 struct drm_info_node *node = (struct drm_info_node *) m->private;
1376 struct drm_device *dev = node->minor->dev;
1377 struct drm_i915_private *dev_priv = dev->dev_private;
1378 u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1379 unsigned forcewake_count;
1380 int count=0, ret;
1381
1382
1383 ret = mutex_lock_interruptible(&dev->struct_mutex);
1384 if (ret)
1385 return ret;
1386
1387 spin_lock_irq(&dev_priv->gt_lock);
1388 forcewake_count = dev_priv->forcewake_count;
1389 spin_unlock_irq(&dev_priv->gt_lock);
1390
1391 if (forcewake_count) {
1392 seq_printf(m, "RC information inaccurate because somebody "
1393 "holds a forcewake reference \n");
1394 } else {
1395 /* NB: we cannot use forcewake, else we read the wrong values */
1396 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1397 udelay(10);
1398 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1399 }
1400
1401 gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1402 trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1403
1404 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1405 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1406 mutex_unlock(&dev->struct_mutex);
1407 mutex_lock(&dev_priv->rps.hw_lock);
1408 sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1409 mutex_unlock(&dev_priv->rps.hw_lock);
1410
1411 seq_printf(m, "Video Turbo Mode: %s\n",
1412 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1413 seq_printf(m, "HW control enabled: %s\n",
1414 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1415 seq_printf(m, "SW control enabled: %s\n",
1416 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1417 GEN6_RP_MEDIA_SW_MODE));
1418 seq_printf(m, "RC1e Enabled: %s\n",
1419 yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1420 seq_printf(m, "RC6 Enabled: %s\n",
1421 yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1422 seq_printf(m, "Deep RC6 Enabled: %s\n",
1423 yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1424 seq_printf(m, "Deepest RC6 Enabled: %s\n",
1425 yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1426 seq_printf(m, "Current RC state: ");
1427 switch (gt_core_status & GEN6_RCn_MASK) {
1428 case GEN6_RC0:
1429 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1430 seq_printf(m, "Core Power Down\n");
1431 else
1432 seq_printf(m, "on\n");
1433 break;
1434 case GEN6_RC3:
1435 seq_printf(m, "RC3\n");
1436 break;
1437 case GEN6_RC6:
1438 seq_printf(m, "RC6\n");
1439 break;
1440 case GEN6_RC7:
1441 seq_printf(m, "RC7\n");
1442 break;
1443 default:
1444 seq_printf(m, "Unknown\n");
1445 break;
1446 }
1447
1448 seq_printf(m, "Core Power Down: %s\n",
1449 yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1450
1451 /* Not exactly sure what this is */
1452 seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1453 I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1454 seq_printf(m, "RC6 residency since boot: %u\n",
1455 I915_READ(GEN6_GT_GFX_RC6));
1456 seq_printf(m, "RC6+ residency since boot: %u\n",
1457 I915_READ(GEN6_GT_GFX_RC6p));
1458 seq_printf(m, "RC6++ residency since boot: %u\n",
1459 I915_READ(GEN6_GT_GFX_RC6pp));
1460
1461 seq_printf(m, "RC6 voltage: %dmV\n",
1462 GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1463 seq_printf(m, "RC6+ voltage: %dmV\n",
1464 GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1465 seq_printf(m, "RC6++ voltage: %dmV\n",
1466 GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1467 return 0;
1468 }
1469
1470 static int i915_drpc_info(struct seq_file *m, void *unused)
1471 {
1472 struct drm_info_node *node = (struct drm_info_node *) m->private;
1473 struct drm_device *dev = node->minor->dev;
1474
1475 if (IS_GEN6(dev) || IS_GEN7(dev))
1476 return gen6_drpc_info(m);
1477 else
1478 return ironlake_drpc_info(m);
1479 }
1480
1481 static int i915_fbc_status(struct seq_file *m, void *unused)
1482 {
1483 struct drm_info_node *node = (struct drm_info_node *) m->private;
1484 struct drm_device *dev = node->minor->dev;
1485 drm_i915_private_t *dev_priv = dev->dev_private;
1486
1487 if (!I915_HAS_FBC(dev)) {
1488 seq_printf(m, "FBC unsupported on this chipset\n");
1489 return 0;
1490 }
1491
1492 if (intel_fbc_enabled(dev)) {
1493 seq_printf(m, "FBC enabled\n");
1494 } else {
1495 seq_printf(m, "FBC disabled: ");
1496 switch (dev_priv->no_fbc_reason) {
1497 case FBC_NO_OUTPUT:
1498 seq_printf(m, "no outputs");
1499 break;
1500 case FBC_STOLEN_TOO_SMALL:
1501 seq_printf(m, "not enough stolen memory");
1502 break;
1503 case FBC_UNSUPPORTED_MODE:
1504 seq_printf(m, "mode not supported");
1505 break;
1506 case FBC_MODE_TOO_LARGE:
1507 seq_printf(m, "mode too large");
1508 break;
1509 case FBC_BAD_PLANE:
1510 seq_printf(m, "FBC unsupported on plane");
1511 break;
1512 case FBC_NOT_TILED:
1513 seq_printf(m, "scanout buffer not tiled");
1514 break;
1515 case FBC_MULTIPLE_PIPES:
1516 seq_printf(m, "multiple pipes are enabled");
1517 break;
1518 case FBC_MODULE_PARAM:
1519 seq_printf(m, "disabled per module param (default off)");
1520 break;
1521 default:
1522 seq_printf(m, "unknown reason");
1523 }
1524 seq_printf(m, "\n");
1525 }
1526 return 0;
1527 }
1528
1529 static int i915_ips_status(struct seq_file *m, void *unused)
1530 {
1531 struct drm_info_node *node = (struct drm_info_node *) m->private;
1532 struct drm_device *dev = node->minor->dev;
1533 struct drm_i915_private *dev_priv = dev->dev_private;
1534
1535 if (!HAS_IPS(dev)) {
1536 seq_puts(m, "not supported\n");
1537 return 0;
1538 }
1539
1540 if (I915_READ(IPS_CTL) & IPS_ENABLE)
1541 seq_puts(m, "enabled\n");
1542 else
1543 seq_puts(m, "disabled\n");
1544
1545 return 0;
1546 }
1547
1548 static int i915_sr_status(struct seq_file *m, void *unused)
1549 {
1550 struct drm_info_node *node = (struct drm_info_node *) m->private;
1551 struct drm_device *dev = node->minor->dev;
1552 drm_i915_private_t *dev_priv = dev->dev_private;
1553 bool sr_enabled = false;
1554
1555 if (HAS_PCH_SPLIT(dev))
1556 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1557 else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1558 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1559 else if (IS_I915GM(dev))
1560 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1561 else if (IS_PINEVIEW(dev))
1562 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1563
1564 seq_printf(m, "self-refresh: %s\n",
1565 sr_enabled ? "enabled" : "disabled");
1566
1567 return 0;
1568 }
1569
1570 static int i915_emon_status(struct seq_file *m, void *unused)
1571 {
1572 struct drm_info_node *node = (struct drm_info_node *) m->private;
1573 struct drm_device *dev = node->minor->dev;
1574 drm_i915_private_t *dev_priv = dev->dev_private;
1575 unsigned long temp, chipset, gfx;
1576 int ret;
1577
1578 if (!IS_GEN5(dev))
1579 return -ENODEV;
1580
1581 ret = mutex_lock_interruptible(&dev->struct_mutex);
1582 if (ret)
1583 return ret;
1584
1585 temp = i915_mch_val(dev_priv);
1586 chipset = i915_chipset_val(dev_priv);
1587 gfx = i915_gfx_val(dev_priv);
1588 mutex_unlock(&dev->struct_mutex);
1589
1590 seq_printf(m, "GMCH temp: %ld\n", temp);
1591 seq_printf(m, "Chipset power: %ld\n", chipset);
1592 seq_printf(m, "GFX power: %ld\n", gfx);
1593 seq_printf(m, "Total power: %ld\n", chipset + gfx);
1594
1595 return 0;
1596 }
1597
1598 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1599 {
1600 struct drm_info_node *node = (struct drm_info_node *) m->private;
1601 struct drm_device *dev = node->minor->dev;
1602 drm_i915_private_t *dev_priv = dev->dev_private;
1603 int ret;
1604 int gpu_freq, ia_freq;
1605
1606 if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1607 seq_printf(m, "unsupported on this chipset\n");
1608 return 0;
1609 }
1610
1611 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1612 if (ret)
1613 return ret;
1614
1615 seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
1616
1617 for (gpu_freq = dev_priv->rps.min_delay;
1618 gpu_freq <= dev_priv->rps.max_delay;
1619 gpu_freq++) {
1620 ia_freq = gpu_freq;
1621 sandybridge_pcode_read(dev_priv,
1622 GEN6_PCODE_READ_MIN_FREQ_TABLE,
1623 &ia_freq);
1624 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
1625 gpu_freq * GT_FREQUENCY_MULTIPLIER,
1626 ((ia_freq >> 0) & 0xff) * 100,
1627 ((ia_freq >> 8) & 0xff) * 100);
1628 }
1629
1630 mutex_unlock(&dev_priv->rps.hw_lock);
1631
1632 return 0;
1633 }
1634
1635 static int i915_gfxec(struct seq_file *m, void *unused)
1636 {
1637 struct drm_info_node *node = (struct drm_info_node *) m->private;
1638 struct drm_device *dev = node->minor->dev;
1639 drm_i915_private_t *dev_priv = dev->dev_private;
1640 int ret;
1641
1642 ret = mutex_lock_interruptible(&dev->struct_mutex);
1643 if (ret)
1644 return ret;
1645
1646 seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1647
1648 mutex_unlock(&dev->struct_mutex);
1649
1650 return 0;
1651 }
1652
1653 static int i915_opregion(struct seq_file *m, void *unused)
1654 {
1655 struct drm_info_node *node = (struct drm_info_node *) m->private;
1656 struct drm_device *dev = node->minor->dev;
1657 drm_i915_private_t *dev_priv = dev->dev_private;
1658 struct intel_opregion *opregion = &dev_priv->opregion;
1659 void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1660 int ret;
1661
1662 if (data == NULL)
1663 return -ENOMEM;
1664
1665 ret = mutex_lock_interruptible(&dev->struct_mutex);
1666 if (ret)
1667 goto out;
1668
1669 if (opregion->header) {
1670 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1671 seq_write(m, data, OPREGION_SIZE);
1672 }
1673
1674 mutex_unlock(&dev->struct_mutex);
1675
1676 out:
1677 kfree(data);
1678 return 0;
1679 }
1680
1681 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1682 {
1683 struct drm_info_node *node = (struct drm_info_node *) m->private;
1684 struct drm_device *dev = node->minor->dev;
1685 drm_i915_private_t *dev_priv = dev->dev_private;
1686 struct intel_fbdev *ifbdev;
1687 struct intel_framebuffer *fb;
1688 int ret;
1689
1690 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1691 if (ret)
1692 return ret;
1693
1694 ifbdev = dev_priv->fbdev;
1695 fb = to_intel_framebuffer(ifbdev->helper.fb);
1696
1697 seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
1698 fb->base.width,
1699 fb->base.height,
1700 fb->base.depth,
1701 fb->base.bits_per_pixel,
1702 atomic_read(&fb->base.refcount.refcount));
1703 describe_obj(m, fb->obj);
1704 seq_printf(m, "\n");
1705 mutex_unlock(&dev->mode_config.mutex);
1706
1707 mutex_lock(&dev->mode_config.fb_lock);
1708 list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1709 if (&fb->base == ifbdev->helper.fb)
1710 continue;
1711
1712 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
1713 fb->base.width,
1714 fb->base.height,
1715 fb->base.depth,
1716 fb->base.bits_per_pixel,
1717 atomic_read(&fb->base.refcount.refcount));
1718 describe_obj(m, fb->obj);
1719 seq_printf(m, "\n");
1720 }
1721 mutex_unlock(&dev->mode_config.fb_lock);
1722
1723 return 0;
1724 }
1725
1726 static int i915_context_status(struct seq_file *m, void *unused)
1727 {
1728 struct drm_info_node *node = (struct drm_info_node *) m->private;
1729 struct drm_device *dev = node->minor->dev;
1730 drm_i915_private_t *dev_priv = dev->dev_private;
1731 struct intel_ring_buffer *ring;
1732 int ret, i;
1733
1734 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1735 if (ret)
1736 return ret;
1737
1738 if (dev_priv->ips.pwrctx) {
1739 seq_printf(m, "power context ");
1740 describe_obj(m, dev_priv->ips.pwrctx);
1741 seq_printf(m, "\n");
1742 }
1743
1744 if (dev_priv->ips.renderctx) {
1745 seq_printf(m, "render context ");
1746 describe_obj(m, dev_priv->ips.renderctx);
1747 seq_printf(m, "\n");
1748 }
1749
1750 for_each_ring(ring, dev_priv, i) {
1751 if (ring->default_context) {
1752 seq_printf(m, "HW default context %s ring ", ring->name);
1753 describe_obj(m, ring->default_context->obj);
1754 seq_printf(m, "\n");
1755 }
1756 }
1757
1758 mutex_unlock(&dev->mode_config.mutex);
1759
1760 return 0;
1761 }
1762
1763 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1764 {
1765 struct drm_info_node *node = (struct drm_info_node *) m->private;
1766 struct drm_device *dev = node->minor->dev;
1767 struct drm_i915_private *dev_priv = dev->dev_private;
1768 unsigned forcewake_count;
1769
1770 spin_lock_irq(&dev_priv->gt_lock);
1771 forcewake_count = dev_priv->forcewake_count;
1772 spin_unlock_irq(&dev_priv->gt_lock);
1773
1774 seq_printf(m, "forcewake count = %u\n", forcewake_count);
1775
1776 return 0;
1777 }
1778
1779 static const char *swizzle_string(unsigned swizzle)
1780 {
1781 switch(swizzle) {
1782 case I915_BIT_6_SWIZZLE_NONE:
1783 return "none";
1784 case I915_BIT_6_SWIZZLE_9:
1785 return "bit9";
1786 case I915_BIT_6_SWIZZLE_9_10:
1787 return "bit9/bit10";
1788 case I915_BIT_6_SWIZZLE_9_11:
1789 return "bit9/bit11";
1790 case I915_BIT_6_SWIZZLE_9_10_11:
1791 return "bit9/bit10/bit11";
1792 case I915_BIT_6_SWIZZLE_9_17:
1793 return "bit9/bit17";
1794 case I915_BIT_6_SWIZZLE_9_10_17:
1795 return "bit9/bit10/bit17";
1796 case I915_BIT_6_SWIZZLE_UNKNOWN:
1797 return "unknown";
1798 }
1799
1800 return "bug";
1801 }
1802
1803 static int i915_swizzle_info(struct seq_file *m, void *data)
1804 {
1805 struct drm_info_node *node = (struct drm_info_node *) m->private;
1806 struct drm_device *dev = node->minor->dev;
1807 struct drm_i915_private *dev_priv = dev->dev_private;
1808 int ret;
1809
1810 ret = mutex_lock_interruptible(&dev->struct_mutex);
1811 if (ret)
1812 return ret;
1813
1814 seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1815 swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1816 seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1817 swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1818
1819 if (IS_GEN3(dev) || IS_GEN4(dev)) {
1820 seq_printf(m, "DDC = 0x%08x\n",
1821 I915_READ(DCC));
1822 seq_printf(m, "C0DRB3 = 0x%04x\n",
1823 I915_READ16(C0DRB3));
1824 seq_printf(m, "C1DRB3 = 0x%04x\n",
1825 I915_READ16(C1DRB3));
1826 } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1827 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1828 I915_READ(MAD_DIMM_C0));
1829 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1830 I915_READ(MAD_DIMM_C1));
1831 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1832 I915_READ(MAD_DIMM_C2));
1833 seq_printf(m, "TILECTL = 0x%08x\n",
1834 I915_READ(TILECTL));
1835 seq_printf(m, "ARB_MODE = 0x%08x\n",
1836 I915_READ(ARB_MODE));
1837 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1838 I915_READ(DISP_ARB_CTL));
1839 }
1840 mutex_unlock(&dev->struct_mutex);
1841
1842 return 0;
1843 }
1844
1845 static int i915_ppgtt_info(struct seq_file *m, void *data)
1846 {
1847 struct drm_info_node *node = (struct drm_info_node *) m->private;
1848 struct drm_device *dev = node->minor->dev;
1849 struct drm_i915_private *dev_priv = dev->dev_private;
1850 struct intel_ring_buffer *ring;
1851 int i, ret;
1852
1853
1854 ret = mutex_lock_interruptible(&dev->struct_mutex);
1855 if (ret)
1856 return ret;
1857 if (INTEL_INFO(dev)->gen == 6)
1858 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1859
1860 for_each_ring(ring, dev_priv, i) {
1861 seq_printf(m, "%s\n", ring->name);
1862 if (INTEL_INFO(dev)->gen == 7)
1863 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1864 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1865 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1866 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1867 }
1868 if (dev_priv->mm.aliasing_ppgtt) {
1869 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1870
1871 seq_printf(m, "aliasing PPGTT:\n");
1872 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1873 }
1874 seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1875 mutex_unlock(&dev->struct_mutex);
1876
1877 return 0;
1878 }
1879
1880 static int i915_dpio_info(struct seq_file *m, void *data)
1881 {
1882 struct drm_info_node *node = (struct drm_info_node *) m->private;
1883 struct drm_device *dev = node->minor->dev;
1884 struct drm_i915_private *dev_priv = dev->dev_private;
1885 int ret;
1886
1887
1888 if (!IS_VALLEYVIEW(dev)) {
1889 seq_printf(m, "unsupported\n");
1890 return 0;
1891 }
1892
1893 ret = mutex_lock_interruptible(&dev_priv->dpio_lock);
1894 if (ret)
1895 return ret;
1896
1897 seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1898
1899 seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1900 vlv_dpio_read(dev_priv, _DPIO_DIV_A));
1901 seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1902 vlv_dpio_read(dev_priv, _DPIO_DIV_B));
1903
1904 seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1905 vlv_dpio_read(dev_priv, _DPIO_REFSFR_A));
1906 seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1907 vlv_dpio_read(dev_priv, _DPIO_REFSFR_B));
1908
1909 seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1910 vlv_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1911 seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1912 vlv_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1913
1914 seq_printf(m, "DPIO_LPF_COEFF_A: 0x%08x\n",
1915 vlv_dpio_read(dev_priv, _DPIO_LPF_COEFF_A));
1916 seq_printf(m, "DPIO_LPF_COEFF_B: 0x%08x\n",
1917 vlv_dpio_read(dev_priv, _DPIO_LPF_COEFF_B));
1918
1919 seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1920 vlv_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1921
1922 mutex_unlock(&dev_priv->dpio_lock);
1923
1924 return 0;
1925 }
1926
1927 static int
1928 i915_wedged_get(void *data, u64 *val)
1929 {
1930 struct drm_device *dev = data;
1931 drm_i915_private_t *dev_priv = dev->dev_private;
1932
1933 *val = atomic_read(&dev_priv->gpu_error.reset_counter);
1934
1935 return 0;
1936 }
1937
1938 static int
1939 i915_wedged_set(void *data, u64 val)
1940 {
1941 struct drm_device *dev = data;
1942
1943 DRM_INFO("Manually setting wedged to %llu\n", val);
1944 i915_handle_error(dev, val);
1945
1946 return 0;
1947 }
1948
1949 DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops,
1950 i915_wedged_get, i915_wedged_set,
1951 "%llu\n");
1952
1953 static int
1954 i915_ring_stop_get(void *data, u64 *val)
1955 {
1956 struct drm_device *dev = data;
1957 drm_i915_private_t *dev_priv = dev->dev_private;
1958
1959 *val = dev_priv->gpu_error.stop_rings;
1960
1961 return 0;
1962 }
1963
1964 static int
1965 i915_ring_stop_set(void *data, u64 val)
1966 {
1967 struct drm_device *dev = data;
1968 struct drm_i915_private *dev_priv = dev->dev_private;
1969 int ret;
1970
1971 DRM_DEBUG_DRIVER("Stopping rings 0x%08llx\n", val);
1972
1973 ret = mutex_lock_interruptible(&dev->struct_mutex);
1974 if (ret)
1975 return ret;
1976
1977 dev_priv->gpu_error.stop_rings = val;
1978 mutex_unlock(&dev->struct_mutex);
1979
1980 return 0;
1981 }
1982
1983 DEFINE_SIMPLE_ATTRIBUTE(i915_ring_stop_fops,
1984 i915_ring_stop_get, i915_ring_stop_set,
1985 "0x%08llx\n");
1986
1987 #define DROP_UNBOUND 0x1
1988 #define DROP_BOUND 0x2
1989 #define DROP_RETIRE 0x4
1990 #define DROP_ACTIVE 0x8
1991 #define DROP_ALL (DROP_UNBOUND | \
1992 DROP_BOUND | \
1993 DROP_RETIRE | \
1994 DROP_ACTIVE)
1995 static int
1996 i915_drop_caches_get(void *data, u64 *val)
1997 {
1998 *val = DROP_ALL;
1999
2000 return 0;
2001 }
2002
2003 static int
2004 i915_drop_caches_set(void *data, u64 val)
2005 {
2006 struct drm_device *dev = data;
2007 struct drm_i915_private *dev_priv = dev->dev_private;
2008 struct drm_i915_gem_object *obj, *next;
2009 int ret;
2010
2011 DRM_DEBUG_DRIVER("Dropping caches: 0x%08llx\n", val);
2012
2013 /* No need to check and wait for gpu resets, only libdrm auto-restarts
2014 * on ioctls on -EAGAIN. */
2015 ret = mutex_lock_interruptible(&dev->struct_mutex);
2016 if (ret)
2017 return ret;
2018
2019 if (val & DROP_ACTIVE) {
2020 ret = i915_gpu_idle(dev);
2021 if (ret)
2022 goto unlock;
2023 }
2024
2025 if (val & (DROP_RETIRE | DROP_ACTIVE))
2026 i915_gem_retire_requests(dev);
2027
2028 if (val & DROP_BOUND) {
2029 list_for_each_entry_safe(obj, next, &dev_priv->mm.inactive_list, mm_list)
2030 if (obj->pin_count == 0) {
2031 ret = i915_gem_object_unbind(obj);
2032 if (ret)
2033 goto unlock;
2034 }
2035 }
2036
2037 if (val & DROP_UNBOUND) {
2038 list_for_each_entry_safe(obj, next, &dev_priv->mm.unbound_list,
2039 global_list)
2040 if (obj->pages_pin_count == 0) {
2041 ret = i915_gem_object_put_pages(obj);
2042 if (ret)
2043 goto unlock;
2044 }
2045 }
2046
2047 unlock:
2048 mutex_unlock(&dev->struct_mutex);
2049
2050 return ret;
2051 }
2052
2053 DEFINE_SIMPLE_ATTRIBUTE(i915_drop_caches_fops,
2054 i915_drop_caches_get, i915_drop_caches_set,
2055 "0x%08llx\n");
2056
2057 static int
2058 i915_max_freq_get(void *data, u64 *val)
2059 {
2060 struct drm_device *dev = data;
2061 drm_i915_private_t *dev_priv = dev->dev_private;
2062 int ret;
2063
2064 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2065 return -ENODEV;
2066
2067 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2068 if (ret)
2069 return ret;
2070
2071 if (IS_VALLEYVIEW(dev))
2072 *val = vlv_gpu_freq(dev_priv->mem_freq,
2073 dev_priv->rps.max_delay);
2074 else
2075 *val = dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER;
2076 mutex_unlock(&dev_priv->rps.hw_lock);
2077
2078 return 0;
2079 }
2080
2081 static int
2082 i915_max_freq_set(void *data, u64 val)
2083 {
2084 struct drm_device *dev = data;
2085 struct drm_i915_private *dev_priv = dev->dev_private;
2086 int ret;
2087
2088 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2089 return -ENODEV;
2090
2091 DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
2092
2093 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2094 if (ret)
2095 return ret;
2096
2097 /*
2098 * Turbo will still be enabled, but won't go above the set value.
2099 */
2100 if (IS_VALLEYVIEW(dev)) {
2101 val = vlv_freq_opcode(dev_priv->mem_freq, val);
2102 dev_priv->rps.max_delay = val;
2103 gen6_set_rps(dev, val);
2104 } else {
2105 do_div(val, GT_FREQUENCY_MULTIPLIER);
2106 dev_priv->rps.max_delay = val;
2107 gen6_set_rps(dev, val);
2108 }
2109
2110 mutex_unlock(&dev_priv->rps.hw_lock);
2111
2112 return 0;
2113 }
2114
2115 DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
2116 i915_max_freq_get, i915_max_freq_set,
2117 "%llu\n");
2118
2119 static int
2120 i915_min_freq_get(void *data, u64 *val)
2121 {
2122 struct drm_device *dev = data;
2123 drm_i915_private_t *dev_priv = dev->dev_private;
2124 int ret;
2125
2126 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2127 return -ENODEV;
2128
2129 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2130 if (ret)
2131 return ret;
2132
2133 if (IS_VALLEYVIEW(dev))
2134 *val = vlv_gpu_freq(dev_priv->mem_freq,
2135 dev_priv->rps.min_delay);
2136 else
2137 *val = dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER;
2138 mutex_unlock(&dev_priv->rps.hw_lock);
2139
2140 return 0;
2141 }
2142
2143 static int
2144 i915_min_freq_set(void *data, u64 val)
2145 {
2146 struct drm_device *dev = data;
2147 struct drm_i915_private *dev_priv = dev->dev_private;
2148 int ret;
2149
2150 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2151 return -ENODEV;
2152
2153 DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
2154
2155 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2156 if (ret)
2157 return ret;
2158
2159 /*
2160 * Turbo will still be enabled, but won't go below the set value.
2161 */
2162 if (IS_VALLEYVIEW(dev)) {
2163 val = vlv_freq_opcode(dev_priv->mem_freq, val);
2164 dev_priv->rps.min_delay = val;
2165 valleyview_set_rps(dev, val);
2166 } else {
2167 do_div(val, GT_FREQUENCY_MULTIPLIER);
2168 dev_priv->rps.min_delay = val;
2169 gen6_set_rps(dev, val);
2170 }
2171 mutex_unlock(&dev_priv->rps.hw_lock);
2172
2173 return 0;
2174 }
2175
2176 DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
2177 i915_min_freq_get, i915_min_freq_set,
2178 "%llu\n");
2179
2180 static int
2181 i915_cache_sharing_get(void *data, u64 *val)
2182 {
2183 struct drm_device *dev = data;
2184 drm_i915_private_t *dev_priv = dev->dev_private;
2185 u32 snpcr;
2186 int ret;
2187
2188 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2189 return -ENODEV;
2190
2191 ret = mutex_lock_interruptible(&dev->struct_mutex);
2192 if (ret)
2193 return ret;
2194
2195 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2196 mutex_unlock(&dev_priv->dev->struct_mutex);
2197
2198 *val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT;
2199
2200 return 0;
2201 }
2202
2203 static int
2204 i915_cache_sharing_set(void *data, u64 val)
2205 {
2206 struct drm_device *dev = data;
2207 struct drm_i915_private *dev_priv = dev->dev_private;
2208 u32 snpcr;
2209
2210 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2211 return -ENODEV;
2212
2213 if (val > 3)
2214 return -EINVAL;
2215
2216 DRM_DEBUG_DRIVER("Manually setting uncore sharing to %llu\n", val);
2217
2218 /* Update the cache sharing policy here as well */
2219 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2220 snpcr &= ~GEN6_MBC_SNPCR_MASK;
2221 snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
2222 I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
2223
2224 return 0;
2225 }
2226
2227 DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
2228 i915_cache_sharing_get, i915_cache_sharing_set,
2229 "%llu\n");
2230
2231 /* As the drm_debugfs_init() routines are called before dev->dev_private is
2232 * allocated we need to hook into the minor for release. */
2233 static int
2234 drm_add_fake_info_node(struct drm_minor *minor,
2235 struct dentry *ent,
2236 const void *key)
2237 {
2238 struct drm_info_node *node;
2239
2240 node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
2241 if (node == NULL) {
2242 debugfs_remove(ent);
2243 return -ENOMEM;
2244 }
2245
2246 node->minor = minor;
2247 node->dent = ent;
2248 node->info_ent = (void *) key;
2249
2250 mutex_lock(&minor->debugfs_lock);
2251 list_add(&node->list, &minor->debugfs_list);
2252 mutex_unlock(&minor->debugfs_lock);
2253
2254 return 0;
2255 }
2256
2257 static int i915_forcewake_open(struct inode *inode, struct file *file)
2258 {
2259 struct drm_device *dev = inode->i_private;
2260 struct drm_i915_private *dev_priv = dev->dev_private;
2261
2262 if (INTEL_INFO(dev)->gen < 6)
2263 return 0;
2264
2265 gen6_gt_force_wake_get(dev_priv);
2266
2267 return 0;
2268 }
2269
2270 static int i915_forcewake_release(struct inode *inode, struct file *file)
2271 {
2272 struct drm_device *dev = inode->i_private;
2273 struct drm_i915_private *dev_priv = dev->dev_private;
2274
2275 if (INTEL_INFO(dev)->gen < 6)
2276 return 0;
2277
2278 gen6_gt_force_wake_put(dev_priv);
2279
2280 return 0;
2281 }
2282
2283 static const struct file_operations i915_forcewake_fops = {
2284 .owner = THIS_MODULE,
2285 .open = i915_forcewake_open,
2286 .release = i915_forcewake_release,
2287 };
2288
2289 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2290 {
2291 struct drm_device *dev = minor->dev;
2292 struct dentry *ent;
2293
2294 ent = debugfs_create_file("i915_forcewake_user",
2295 S_IRUSR,
2296 root, dev,
2297 &i915_forcewake_fops);
2298 if (IS_ERR(ent))
2299 return PTR_ERR(ent);
2300
2301 return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2302 }
2303
2304 static int i915_debugfs_create(struct dentry *root,
2305 struct drm_minor *minor,
2306 const char *name,
2307 const struct file_operations *fops)
2308 {
2309 struct drm_device *dev = minor->dev;
2310 struct dentry *ent;
2311
2312 ent = debugfs_create_file(name,
2313 S_IRUGO | S_IWUSR,
2314 root, dev,
2315 fops);
2316 if (IS_ERR(ent))
2317 return PTR_ERR(ent);
2318
2319 return drm_add_fake_info_node(minor, ent, fops);
2320 }
2321
2322 static struct drm_info_list i915_debugfs_list[] = {
2323 {"i915_capabilities", i915_capabilities, 0},
2324 {"i915_gem_objects", i915_gem_object_info, 0},
2325 {"i915_gem_gtt", i915_gem_gtt_info, 0},
2326 {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2327 {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2328 {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2329 {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2330 {"i915_gem_request", i915_gem_request_info, 0},
2331 {"i915_gem_seqno", i915_gem_seqno_info, 0},
2332 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2333 {"i915_gem_interrupt", i915_interrupt_info, 0},
2334 {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2335 {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2336 {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2337 {"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
2338 {"i915_rstdby_delays", i915_rstdby_delays, 0},
2339 {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2340 {"i915_delayfreq_table", i915_delayfreq_table, 0},
2341 {"i915_inttoext_table", i915_inttoext_table, 0},
2342 {"i915_drpc_info", i915_drpc_info, 0},
2343 {"i915_emon_status", i915_emon_status, 0},
2344 {"i915_ring_freq_table", i915_ring_freq_table, 0},
2345 {"i915_gfxec", i915_gfxec, 0},
2346 {"i915_fbc_status", i915_fbc_status, 0},
2347 {"i915_ips_status", i915_ips_status, 0},
2348 {"i915_sr_status", i915_sr_status, 0},
2349 {"i915_opregion", i915_opregion, 0},
2350 {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2351 {"i915_context_status", i915_context_status, 0},
2352 {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2353 {"i915_swizzle_info", i915_swizzle_info, 0},
2354 {"i915_ppgtt_info", i915_ppgtt_info, 0},
2355 {"i915_dpio", i915_dpio_info, 0},
2356 };
2357 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2358
2359 int i915_debugfs_init(struct drm_minor *minor)
2360 {
2361 int ret;
2362
2363 ret = i915_debugfs_create(minor->debugfs_root, minor,
2364 "i915_wedged",
2365 &i915_wedged_fops);
2366 if (ret)
2367 return ret;
2368
2369 ret = i915_forcewake_create(minor->debugfs_root, minor);
2370 if (ret)
2371 return ret;
2372
2373 ret = i915_debugfs_create(minor->debugfs_root, minor,
2374 "i915_max_freq",
2375 &i915_max_freq_fops);
2376 if (ret)
2377 return ret;
2378
2379 ret = i915_debugfs_create(minor->debugfs_root, minor,
2380 "i915_min_freq",
2381 &i915_min_freq_fops);
2382 if (ret)
2383 return ret;
2384
2385 ret = i915_debugfs_create(minor->debugfs_root, minor,
2386 "i915_cache_sharing",
2387 &i915_cache_sharing_fops);
2388 if (ret)
2389 return ret;
2390
2391 ret = i915_debugfs_create(minor->debugfs_root, minor,
2392 "i915_ring_stop",
2393 &i915_ring_stop_fops);
2394 if (ret)
2395 return ret;
2396
2397 ret = i915_debugfs_create(minor->debugfs_root, minor,
2398 "i915_gem_drop_caches",
2399 &i915_drop_caches_fops);
2400 if (ret)
2401 return ret;
2402
2403 ret = i915_debugfs_create(minor->debugfs_root, minor,
2404 "i915_error_state",
2405 &i915_error_state_fops);
2406 if (ret)
2407 return ret;
2408
2409 ret = i915_debugfs_create(minor->debugfs_root, minor,
2410 "i915_next_seqno",
2411 &i915_next_seqno_fops);
2412 if (ret)
2413 return ret;
2414
2415 return drm_debugfs_create_files(i915_debugfs_list,
2416 I915_DEBUGFS_ENTRIES,
2417 minor->debugfs_root, minor);
2418 }
2419
2420 void i915_debugfs_cleanup(struct drm_minor *minor)
2421 {
2422 drm_debugfs_remove_files(i915_debugfs_list,
2423 I915_DEBUGFS_ENTRIES, minor);
2424 drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2425 1, minor);
2426 drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2427 1, minor);
2428 drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2429 1, minor);
2430 drm_debugfs_remove_files((struct drm_info_list *) &i915_min_freq_fops,
2431 1, minor);
2432 drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2433 1, minor);
2434 drm_debugfs_remove_files((struct drm_info_list *) &i915_drop_caches_fops,
2435 1, minor);
2436 drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2437 1, minor);
2438 drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2439 1, minor);
2440 drm_debugfs_remove_files((struct drm_info_list *) &i915_next_seqno_fops,
2441 1, minor);
2442 }
2443
2444 #endif /* CONFIG_DEBUG_FS */
Linux kernel - Deliverables
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