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1/*
2 * Copyright © 2008 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 * Keith Packard <keithp@keithp.com>
26 *
27 */
28
29#include <linux/seq_file.h>
30#include <linux/debugfs.h>
31#include <linux/slab.h>
32#include <linux/export.h>
33#include "drmP.h"
34#include "drm.h"
35#include "intel_drv.h"
36#include "intel_ringbuffer.h"
37#include "i915_drm.h"
38#include "i915_drv.h"
39
40#define DRM_I915_RING_DEBUG 1
41
42
43#if defined(CONFIG_DEBUG_FS)
44
45enum {
46 ACTIVE_LIST,
47 FLUSHING_LIST,
48 INACTIVE_LIST,
49 PINNED_LIST,
50};
51
52static const char *yesno(int v)
53{
54 return v ? "yes" : "no";
55}
56
57static int i915_capabilities(struct seq_file *m, void *data)
58{
59 struct drm_info_node *node = (struct drm_info_node *) m->private;
60 struct drm_device *dev = node->minor->dev;
61 const struct intel_device_info *info = INTEL_INFO(dev);
62
63 seq_printf(m, "gen: %d\n", info->gen);
64 seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
65#define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
66 B(is_mobile);
67 B(is_i85x);
68 B(is_i915g);
69 B(is_i945gm);
70 B(is_g33);
71 B(need_gfx_hws);
72 B(is_g4x);
73 B(is_pineview);
74 B(is_broadwater);
75 B(is_crestline);
76 B(has_fbc);
77 B(has_pipe_cxsr);
78 B(has_hotplug);
79 B(cursor_needs_physical);
80 B(has_overlay);
81 B(overlay_needs_physical);
82 B(supports_tv);
83 B(has_bsd_ring);
84 B(has_blt_ring);
85 B(has_llc);
86#undef B
87
88 return 0;
89}
90
91static const char *get_pin_flag(struct drm_i915_gem_object *obj)
92{
93 if (obj->user_pin_count > 0)
94 return "P";
95 else if (obj->pin_count > 0)
96 return "p";
97 else
98 return " ";
99}
100
101static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
102{
103 switch (obj->tiling_mode) {
104 default:
105 case I915_TILING_NONE: return " ";
106 case I915_TILING_X: return "X";
107 case I915_TILING_Y: return "Y";
108 }
109}
110
111static const char *cache_level_str(int type)
112{
113 switch (type) {
114 case I915_CACHE_NONE: return " uncached";
115 case I915_CACHE_LLC: return " snooped (LLC)";
116 case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
117 default: return "";
118 }
119}
120
121static void
122describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
123{
124 seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d%s%s%s",
125 &obj->base,
126 get_pin_flag(obj),
127 get_tiling_flag(obj),
128 obj->base.size / 1024,
129 obj->base.read_domains,
130 obj->base.write_domain,
131 obj->last_rendering_seqno,
132 obj->last_fenced_seqno,
133 cache_level_str(obj->cache_level),
134 obj->dirty ? " dirty" : "",
135 obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
136 if (obj->base.name)
137 seq_printf(m, " (name: %d)", obj->base.name);
138 if (obj->fence_reg != I915_FENCE_REG_NONE)
139 seq_printf(m, " (fence: %d)", obj->fence_reg);
140 if (obj->gtt_space != NULL)
141 seq_printf(m, " (gtt offset: %08x, size: %08x)",
142 obj->gtt_offset, (unsigned int)obj->gtt_space->size);
143 if (obj->pin_mappable || obj->fault_mappable) {
144 char s[3], *t = s;
145 if (obj->pin_mappable)
146 *t++ = 'p';
147 if (obj->fault_mappable)
148 *t++ = 'f';
149 *t = '\0';
150 seq_printf(m, " (%s mappable)", s);
151 }
152 if (obj->ring != NULL)
153 seq_printf(m, " (%s)", obj->ring->name);
154}
155
156static int i915_gem_object_list_info(struct seq_file *m, void *data)
157{
158 struct drm_info_node *node = (struct drm_info_node *) m->private;
159 uintptr_t list = (uintptr_t) node->info_ent->data;
160 struct list_head *head;
161 struct drm_device *dev = node->minor->dev;
162 drm_i915_private_t *dev_priv = dev->dev_private;
163 struct drm_i915_gem_object *obj;
164 size_t total_obj_size, total_gtt_size;
165 int count, ret;
166
167 ret = mutex_lock_interruptible(&dev->struct_mutex);
168 if (ret)
169 return ret;
170
171 switch (list) {
172 case ACTIVE_LIST:
173 seq_printf(m, "Active:\n");
174 head = &dev_priv->mm.active_list;
175 break;
176 case INACTIVE_LIST:
177 seq_printf(m, "Inactive:\n");
178 head = &dev_priv->mm.inactive_list;
179 break;
180 case FLUSHING_LIST:
181 seq_printf(m, "Flushing:\n");
182 head = &dev_priv->mm.flushing_list;
183 break;
184 default:
185 mutex_unlock(&dev->struct_mutex);
186 return -EINVAL;
187 }
188
189 total_obj_size = total_gtt_size = count = 0;
190 list_for_each_entry(obj, head, mm_list) {
191 seq_printf(m, " ");
192 describe_obj(m, obj);
193 seq_printf(m, "\n");
194 total_obj_size += obj->base.size;
195 total_gtt_size += obj->gtt_space->size;
196 count++;
197 }
198 mutex_unlock(&dev->struct_mutex);
199
200 seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
201 count, total_obj_size, total_gtt_size);
202 return 0;
203}
204
205#define count_objects(list, member) do { \
206 list_for_each_entry(obj, list, member) { \
207 size += obj->gtt_space->size; \
208 ++count; \
209 if (obj->map_and_fenceable) { \
210 mappable_size += obj->gtt_space->size; \
211 ++mappable_count; \
212 } \
213 } \
214} while (0)
215
216static int i915_gem_object_info(struct seq_file *m, void* data)
217{
218 struct drm_info_node *node = (struct drm_info_node *) m->private;
219 struct drm_device *dev = node->minor->dev;
220 struct drm_i915_private *dev_priv = dev->dev_private;
221 u32 count, mappable_count;
222 size_t size, mappable_size;
223 struct drm_i915_gem_object *obj;
224 int ret;
225
226 ret = mutex_lock_interruptible(&dev->struct_mutex);
227 if (ret)
228 return ret;
229
230 seq_printf(m, "%u objects, %zu bytes\n",
231 dev_priv->mm.object_count,
232 dev_priv->mm.object_memory);
233
234 size = count = mappable_size = mappable_count = 0;
235 count_objects(&dev_priv->mm.gtt_list, gtt_list);
236 seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
237 count, mappable_count, size, mappable_size);
238
239 size = count = mappable_size = mappable_count = 0;
240 count_objects(&dev_priv->mm.active_list, mm_list);
241 count_objects(&dev_priv->mm.flushing_list, mm_list);
242 seq_printf(m, " %u [%u] active objects, %zu [%zu] bytes\n",
243 count, mappable_count, size, mappable_size);
244
245 size = count = mappable_size = mappable_count = 0;
246 count_objects(&dev_priv->mm.inactive_list, mm_list);
247 seq_printf(m, " %u [%u] inactive objects, %zu [%zu] bytes\n",
248 count, mappable_count, size, mappable_size);
249
250 size = count = mappable_size = mappable_count = 0;
251 list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
252 if (obj->fault_mappable) {
253 size += obj->gtt_space->size;
254 ++count;
255 }
256 if (obj->pin_mappable) {
257 mappable_size += obj->gtt_space->size;
258 ++mappable_count;
259 }
260 }
261 seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
262 mappable_count, mappable_size);
263 seq_printf(m, "%u fault mappable objects, %zu bytes\n",
264 count, size);
265
266 seq_printf(m, "%zu [%zu] gtt total\n",
267 dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
268
269 mutex_unlock(&dev->struct_mutex);
270
271 return 0;
272}
273
274static int i915_gem_gtt_info(struct seq_file *m, void* data)
275{
276 struct drm_info_node *node = (struct drm_info_node *) m->private;
277 struct drm_device *dev = node->minor->dev;
278 uintptr_t list = (uintptr_t) node->info_ent->data;
279 struct drm_i915_private *dev_priv = dev->dev_private;
280 struct drm_i915_gem_object *obj;
281 size_t total_obj_size, total_gtt_size;
282 int count, ret;
283
284 ret = mutex_lock_interruptible(&dev->struct_mutex);
285 if (ret)
286 return ret;
287
288 total_obj_size = total_gtt_size = count = 0;
289 list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
290 if (list == PINNED_LIST && obj->pin_count == 0)
291 continue;
292
293 seq_printf(m, " ");
294 describe_obj(m, obj);
295 seq_printf(m, "\n");
296 total_obj_size += obj->base.size;
297 total_gtt_size += obj->gtt_space->size;
298 count++;
299 }
300
301 mutex_unlock(&dev->struct_mutex);
302
303 seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
304 count, total_obj_size, total_gtt_size);
305
306 return 0;
307}
308
309static int i915_gem_pageflip_info(struct seq_file *m, void *data)
310{
311 struct drm_info_node *node = (struct drm_info_node *) m->private;
312 struct drm_device *dev = node->minor->dev;
313 unsigned long flags;
314 struct intel_crtc *crtc;
315
316 list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
317 const char pipe = pipe_name(crtc->pipe);
318 const char plane = plane_name(crtc->plane);
319 struct intel_unpin_work *work;
320
321 spin_lock_irqsave(&dev->event_lock, flags);
322 work = crtc->unpin_work;
323 if (work == NULL) {
324 seq_printf(m, "No flip due on pipe %c (plane %c)\n",
325 pipe, plane);
326 } else {
327 if (!work->pending) {
328 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
329 pipe, plane);
330 } else {
331 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
332 pipe, plane);
333 }
334 if (work->enable_stall_check)
335 seq_printf(m, "Stall check enabled, ");
336 else
337 seq_printf(m, "Stall check waiting for page flip ioctl, ");
338 seq_printf(m, "%d prepares\n", work->pending);
339
340 if (work->old_fb_obj) {
341 struct drm_i915_gem_object *obj = work->old_fb_obj;
342 if (obj)
343 seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
344 }
345 if (work->pending_flip_obj) {
346 struct drm_i915_gem_object *obj = work->pending_flip_obj;
347 if (obj)
348 seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
349 }
350 }
351 spin_unlock_irqrestore(&dev->event_lock, flags);
352 }
353
354 return 0;
355}
356
357static int i915_gem_request_info(struct seq_file *m, void *data)
358{
359 struct drm_info_node *node = (struct drm_info_node *) m->private;
360 struct drm_device *dev = node->minor->dev;
361 drm_i915_private_t *dev_priv = dev->dev_private;
362 struct drm_i915_gem_request *gem_request;
363 int ret, count;
364
365 ret = mutex_lock_interruptible(&dev->struct_mutex);
366 if (ret)
367 return ret;
368
369 count = 0;
370 if (!list_empty(&dev_priv->ring[RCS].request_list)) {
371 seq_printf(m, "Render requests:\n");
372 list_for_each_entry(gem_request,
373 &dev_priv->ring[RCS].request_list,
374 list) {
375 seq_printf(m, " %d @ %d\n",
376 gem_request->seqno,
377 (int) (jiffies - gem_request->emitted_jiffies));
378 }
379 count++;
380 }
381 if (!list_empty(&dev_priv->ring[VCS].request_list)) {
382 seq_printf(m, "BSD requests:\n");
383 list_for_each_entry(gem_request,
384 &dev_priv->ring[VCS].request_list,
385 list) {
386 seq_printf(m, " %d @ %d\n",
387 gem_request->seqno,
388 (int) (jiffies - gem_request->emitted_jiffies));
389 }
390 count++;
391 }
392 if (!list_empty(&dev_priv->ring[BCS].request_list)) {
393 seq_printf(m, "BLT requests:\n");
394 list_for_each_entry(gem_request,
395 &dev_priv->ring[BCS].request_list,
396 list) {
397 seq_printf(m, " %d @ %d\n",
398 gem_request->seqno,
399 (int) (jiffies - gem_request->emitted_jiffies));
400 }
401 count++;
402 }
403 mutex_unlock(&dev->struct_mutex);
404
405 if (count == 0)
406 seq_printf(m, "No requests\n");
407
408 return 0;
409}
410
411static void i915_ring_seqno_info(struct seq_file *m,
412 struct intel_ring_buffer *ring)
413{
414 if (ring->get_seqno) {
415 seq_printf(m, "Current sequence (%s): %d\n",
416 ring->name, ring->get_seqno(ring));
417 }
418}
419
420static int i915_gem_seqno_info(struct seq_file *m, void *data)
421{
422 struct drm_info_node *node = (struct drm_info_node *) m->private;
423 struct drm_device *dev = node->minor->dev;
424 drm_i915_private_t *dev_priv = dev->dev_private;
425 int ret, i;
426
427 ret = mutex_lock_interruptible(&dev->struct_mutex);
428 if (ret)
429 return ret;
430
431 for (i = 0; i < I915_NUM_RINGS; i++)
432 i915_ring_seqno_info(m, &dev_priv->ring[i]);
433
434 mutex_unlock(&dev->struct_mutex);
435
436 return 0;
437}
438
439
440static int i915_interrupt_info(struct seq_file *m, void *data)
441{
442 struct drm_info_node *node = (struct drm_info_node *) m->private;
443 struct drm_device *dev = node->minor->dev;
444 drm_i915_private_t *dev_priv = dev->dev_private;
445 int ret, i, pipe;
446
447 ret = mutex_lock_interruptible(&dev->struct_mutex);
448 if (ret)
449 return ret;
450
451 if (IS_VALLEYVIEW(dev)) {
452 seq_printf(m, "Display IER:\t%08x\n",
453 I915_READ(VLV_IER));
454 seq_printf(m, "Display IIR:\t%08x\n",
455 I915_READ(VLV_IIR));
456 seq_printf(m, "Display IIR_RW:\t%08x\n",
457 I915_READ(VLV_IIR_RW));
458 seq_printf(m, "Display IMR:\t%08x\n",
459 I915_READ(VLV_IMR));
460 for_each_pipe(pipe)
461 seq_printf(m, "Pipe %c stat:\t%08x\n",
462 pipe_name(pipe),
463 I915_READ(PIPESTAT(pipe)));
464
465 seq_printf(m, "Master IER:\t%08x\n",
466 I915_READ(VLV_MASTER_IER));
467
468 seq_printf(m, "Render IER:\t%08x\n",
469 I915_READ(GTIER));
470 seq_printf(m, "Render IIR:\t%08x\n",
471 I915_READ(GTIIR));
472 seq_printf(m, "Render IMR:\t%08x\n",
473 I915_READ(GTIMR));
474
475 seq_printf(m, "PM IER:\t\t%08x\n",
476 I915_READ(GEN6_PMIER));
477 seq_printf(m, "PM IIR:\t\t%08x\n",
478 I915_READ(GEN6_PMIIR));
479 seq_printf(m, "PM IMR:\t\t%08x\n",
480 I915_READ(GEN6_PMIMR));
481
482 seq_printf(m, "Port hotplug:\t%08x\n",
483 I915_READ(PORT_HOTPLUG_EN));
484 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
485 I915_READ(VLV_DPFLIPSTAT));
486 seq_printf(m, "DPINVGTT:\t%08x\n",
487 I915_READ(DPINVGTT));
488
489 } else if (!HAS_PCH_SPLIT(dev)) {
490 seq_printf(m, "Interrupt enable: %08x\n",
491 I915_READ(IER));
492 seq_printf(m, "Interrupt identity: %08x\n",
493 I915_READ(IIR));
494 seq_printf(m, "Interrupt mask: %08x\n",
495 I915_READ(IMR));
496 for_each_pipe(pipe)
497 seq_printf(m, "Pipe %c stat: %08x\n",
498 pipe_name(pipe),
499 I915_READ(PIPESTAT(pipe)));
500 } else {
501 seq_printf(m, "North Display Interrupt enable: %08x\n",
502 I915_READ(DEIER));
503 seq_printf(m, "North Display Interrupt identity: %08x\n",
504 I915_READ(DEIIR));
505 seq_printf(m, "North Display Interrupt mask: %08x\n",
506 I915_READ(DEIMR));
507 seq_printf(m, "South Display Interrupt enable: %08x\n",
508 I915_READ(SDEIER));
509 seq_printf(m, "South Display Interrupt identity: %08x\n",
510 I915_READ(SDEIIR));
511 seq_printf(m, "South Display Interrupt mask: %08x\n",
512 I915_READ(SDEIMR));
513 seq_printf(m, "Graphics Interrupt enable: %08x\n",
514 I915_READ(GTIER));
515 seq_printf(m, "Graphics Interrupt identity: %08x\n",
516 I915_READ(GTIIR));
517 seq_printf(m, "Graphics Interrupt mask: %08x\n",
518 I915_READ(GTIMR));
519 }
520 seq_printf(m, "Interrupts received: %d\n",
521 atomic_read(&dev_priv->irq_received));
522 for (i = 0; i < I915_NUM_RINGS; i++) {
523 if (IS_GEN6(dev) || IS_GEN7(dev)) {
524 seq_printf(m, "Graphics Interrupt mask (%s): %08x\n",
525 dev_priv->ring[i].name,
526 I915_READ_IMR(&dev_priv->ring[i]));
527 }
528 i915_ring_seqno_info(m, &dev_priv->ring[i]);
529 }
530 mutex_unlock(&dev->struct_mutex);
531
532 return 0;
533}
534
535static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
536{
537 struct drm_info_node *node = (struct drm_info_node *) m->private;
538 struct drm_device *dev = node->minor->dev;
539 drm_i915_private_t *dev_priv = dev->dev_private;
540 int i, ret;
541
542 ret = mutex_lock_interruptible(&dev->struct_mutex);
543 if (ret)
544 return ret;
545
546 seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
547 seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
548 for (i = 0; i < dev_priv->num_fence_regs; i++) {
549 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
550
551 seq_printf(m, "Fenced object[%2d] = ", i);
552 if (obj == NULL)
553 seq_printf(m, "unused");
554 else
555 describe_obj(m, obj);
556 seq_printf(m, "\n");
557 }
558
559 mutex_unlock(&dev->struct_mutex);
560 return 0;
561}
562
563static int i915_hws_info(struct seq_file *m, void *data)
564{
565 struct drm_info_node *node = (struct drm_info_node *) m->private;
566 struct drm_device *dev = node->minor->dev;
567 drm_i915_private_t *dev_priv = dev->dev_private;
568 struct intel_ring_buffer *ring;
569 const volatile u32 __iomem *hws;
570 int i;
571
572 ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
573 hws = (volatile u32 __iomem *)ring->status_page.page_addr;
574 if (hws == NULL)
575 return 0;
576
577 for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
578 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
579 i * 4,
580 hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
581 }
582 return 0;
583}
584
585static const char *ring_str(int ring)
586{
587 switch (ring) {
588 case RCS: return "render";
589 case VCS: return "bsd";
590 case BCS: return "blt";
591 default: return "";
592 }
593}
594
595static const char *pin_flag(int pinned)
596{
597 if (pinned > 0)
598 return " P";
599 else if (pinned < 0)
600 return " p";
601 else
602 return "";
603}
604
605static const char *tiling_flag(int tiling)
606{
607 switch (tiling) {
608 default:
609 case I915_TILING_NONE: return "";
610 case I915_TILING_X: return " X";
611 case I915_TILING_Y: return " Y";
612 }
613}
614
615static const char *dirty_flag(int dirty)
616{
617 return dirty ? " dirty" : "";
618}
619
620static const char *purgeable_flag(int purgeable)
621{
622 return purgeable ? " purgeable" : "";
623}
624
625static void print_error_buffers(struct seq_file *m,
626 const char *name,
627 struct drm_i915_error_buffer *err,
628 int count)
629{
630 seq_printf(m, "%s [%d]:\n", name, count);
631
632 while (count--) {
633 seq_printf(m, " %08x %8u %04x %04x %08x%s%s%s%s%s%s%s",
634 err->gtt_offset,
635 err->size,
636 err->read_domains,
637 err->write_domain,
638 err->seqno,
639 pin_flag(err->pinned),
640 tiling_flag(err->tiling),
641 dirty_flag(err->dirty),
642 purgeable_flag(err->purgeable),
643 err->ring != -1 ? " " : "",
644 ring_str(err->ring),
645 cache_level_str(err->cache_level));
646
647 if (err->name)
648 seq_printf(m, " (name: %d)", err->name);
649 if (err->fence_reg != I915_FENCE_REG_NONE)
650 seq_printf(m, " (fence: %d)", err->fence_reg);
651
652 seq_printf(m, "\n");
653 err++;
654 }
655}
656
657static void i915_ring_error_state(struct seq_file *m,
658 struct drm_device *dev,
659 struct drm_i915_error_state *error,
660 unsigned ring)
661{
662 BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
663 seq_printf(m, "%s command stream:\n", ring_str(ring));
664 seq_printf(m, " HEAD: 0x%08x\n", error->head[ring]);
665 seq_printf(m, " TAIL: 0x%08x\n", error->tail[ring]);
666 seq_printf(m, " ACTHD: 0x%08x\n", error->acthd[ring]);
667 seq_printf(m, " IPEIR: 0x%08x\n", error->ipeir[ring]);
668 seq_printf(m, " IPEHR: 0x%08x\n", error->ipehr[ring]);
669 seq_printf(m, " INSTDONE: 0x%08x\n", error->instdone[ring]);
670 if (ring == RCS && INTEL_INFO(dev)->gen >= 4) {
671 seq_printf(m, " INSTDONE1: 0x%08x\n", error->instdone1);
672 seq_printf(m, " BBADDR: 0x%08llx\n", error->bbaddr);
673 }
674 if (INTEL_INFO(dev)->gen >= 4)
675 seq_printf(m, " INSTPS: 0x%08x\n", error->instps[ring]);
676 seq_printf(m, " INSTPM: 0x%08x\n", error->instpm[ring]);
677 seq_printf(m, " FADDR: 0x%08x\n", error->faddr[ring]);
678 if (INTEL_INFO(dev)->gen >= 6) {
679 seq_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
680 seq_printf(m, " SYNC_0: 0x%08x\n",
681 error->semaphore_mboxes[ring][0]);
682 seq_printf(m, " SYNC_1: 0x%08x\n",
683 error->semaphore_mboxes[ring][1]);
684 }
685 seq_printf(m, " seqno: 0x%08x\n", error->seqno[ring]);
686 seq_printf(m, " waiting: %s\n", yesno(error->waiting[ring]));
687 seq_printf(m, " ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
688 seq_printf(m, " ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
689}
690
691struct i915_error_state_file_priv {
692 struct drm_device *dev;
693 struct drm_i915_error_state *error;
694};
695
696static int i915_error_state(struct seq_file *m, void *unused)
697{
698 struct i915_error_state_file_priv *error_priv = m->private;
699 struct drm_device *dev = error_priv->dev;
700 drm_i915_private_t *dev_priv = dev->dev_private;
701 struct drm_i915_error_state *error = error_priv->error;
702 struct intel_ring_buffer *ring;
703 int i, j, page, offset, elt;
704
705 if (!error) {
706 seq_printf(m, "no error state collected\n");
707 return 0;
708 }
709
710 seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
711 error->time.tv_usec);
712 seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
713 seq_printf(m, "EIR: 0x%08x\n", error->eir);
714 seq_printf(m, "IER: 0x%08x\n", error->ier);
715 seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
716
717 for (i = 0; i < dev_priv->num_fence_regs; i++)
718 seq_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
719
720 if (INTEL_INFO(dev)->gen >= 6) {
721 seq_printf(m, "ERROR: 0x%08x\n", error->error);
722 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
723 }
724
725 for_each_ring(ring, dev_priv, i)
726 i915_ring_error_state(m, dev, error, i);
727
728 if (error->active_bo)
729 print_error_buffers(m, "Active",
730 error->active_bo,
731 error->active_bo_count);
732
733 if (error->pinned_bo)
734 print_error_buffers(m, "Pinned",
735 error->pinned_bo,
736 error->pinned_bo_count);
737
738 for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
739 struct drm_i915_error_object *obj;
740
741 if ((obj = error->ring[i].batchbuffer)) {
742 seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
743 dev_priv->ring[i].name,
744 obj->gtt_offset);
745 offset = 0;
746 for (page = 0; page < obj->page_count; page++) {
747 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
748 seq_printf(m, "%08x : %08x\n", offset, obj->pages[page][elt]);
749 offset += 4;
750 }
751 }
752 }
753
754 if (error->ring[i].num_requests) {
755 seq_printf(m, "%s --- %d requests\n",
756 dev_priv->ring[i].name,
757 error->ring[i].num_requests);
758 for (j = 0; j < error->ring[i].num_requests; j++) {
759 seq_printf(m, " seqno 0x%08x, emitted %ld, tail 0x%08x\n",
760 error->ring[i].requests[j].seqno,
761 error->ring[i].requests[j].jiffies,
762 error->ring[i].requests[j].tail);
763 }
764 }
765
766 if ((obj = error->ring[i].ringbuffer)) {
767 seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
768 dev_priv->ring[i].name,
769 obj->gtt_offset);
770 offset = 0;
771 for (page = 0; page < obj->page_count; page++) {
772 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
773 seq_printf(m, "%08x : %08x\n",
774 offset,
775 obj->pages[page][elt]);
776 offset += 4;
777 }
778 }
779 }
780 }
781
782 if (error->overlay)
783 intel_overlay_print_error_state(m, error->overlay);
784
785 if (error->display)
786 intel_display_print_error_state(m, dev, error->display);
787
788 return 0;
789}
790
791static ssize_t
792i915_error_state_write(struct file *filp,
793 const char __user *ubuf,
794 size_t cnt,
795 loff_t *ppos)
796{
797 struct seq_file *m = filp->private_data;
798 struct i915_error_state_file_priv *error_priv = m->private;
799 struct drm_device *dev = error_priv->dev;
800
801 DRM_DEBUG_DRIVER("Resetting error state\n");
802
803 mutex_lock(&dev->struct_mutex);
804 i915_destroy_error_state(dev);
805 mutex_unlock(&dev->struct_mutex);
806
807 return cnt;
808}
809
810static int i915_error_state_open(struct inode *inode, struct file *file)
811{
812 struct drm_device *dev = inode->i_private;
813 drm_i915_private_t *dev_priv = dev->dev_private;
814 struct i915_error_state_file_priv *error_priv;
815 unsigned long flags;
816
817 error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
818 if (!error_priv)
819 return -ENOMEM;
820
821 error_priv->dev = dev;
822
823 spin_lock_irqsave(&dev_priv->error_lock, flags);
824 error_priv->error = dev_priv->first_error;
825 if (error_priv->error)
826 kref_get(&error_priv->error->ref);
827 spin_unlock_irqrestore(&dev_priv->error_lock, flags);
828
829 return single_open(file, i915_error_state, error_priv);
830}
831
832static int i915_error_state_release(struct inode *inode, struct file *file)
833{
834 struct seq_file *m = file->private_data;
835 struct i915_error_state_file_priv *error_priv = m->private;
836
837 if (error_priv->error)
838 kref_put(&error_priv->error->ref, i915_error_state_free);
839 kfree(error_priv);
840
841 return single_release(inode, file);
842}
843
844static const struct file_operations i915_error_state_fops = {
845 .owner = THIS_MODULE,
846 .open = i915_error_state_open,
847 .read = seq_read,
848 .write = i915_error_state_write,
849 .llseek = default_llseek,
850 .release = i915_error_state_release,
851};
852
853static int i915_rstdby_delays(struct seq_file *m, void *unused)
854{
855 struct drm_info_node *node = (struct drm_info_node *) m->private;
856 struct drm_device *dev = node->minor->dev;
857 drm_i915_private_t *dev_priv = dev->dev_private;
858 u16 crstanddelay;
859 int ret;
860
861 ret = mutex_lock_interruptible(&dev->struct_mutex);
862 if (ret)
863 return ret;
864
865 crstanddelay = I915_READ16(CRSTANDVID);
866
867 mutex_unlock(&dev->struct_mutex);
868
869 seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
870
871 return 0;
872}
873
874static int i915_cur_delayinfo(struct seq_file *m, void *unused)
875{
876 struct drm_info_node *node = (struct drm_info_node *) m->private;
877 struct drm_device *dev = node->minor->dev;
878 drm_i915_private_t *dev_priv = dev->dev_private;
879 int ret;
880
881 if (IS_GEN5(dev)) {
882 u16 rgvswctl = I915_READ16(MEMSWCTL);
883 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
884
885 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
886 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
887 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
888 MEMSTAT_VID_SHIFT);
889 seq_printf(m, "Current P-state: %d\n",
890 (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
891 } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
892 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
893 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
894 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
895 u32 rpstat;
896 u32 rpupei, rpcurup, rpprevup;
897 u32 rpdownei, rpcurdown, rpprevdown;
898 int max_freq;
899
900 /* RPSTAT1 is in the GT power well */
901 ret = mutex_lock_interruptible(&dev->struct_mutex);
902 if (ret)
903 return ret;
904
905 gen6_gt_force_wake_get(dev_priv);
906
907 rpstat = I915_READ(GEN6_RPSTAT1);
908 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
909 rpcurup = I915_READ(GEN6_RP_CUR_UP);
910 rpprevup = I915_READ(GEN6_RP_PREV_UP);
911 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
912 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
913 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
914
915 gen6_gt_force_wake_put(dev_priv);
916 mutex_unlock(&dev->struct_mutex);
917
918 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
919 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
920 seq_printf(m, "Render p-state ratio: %d\n",
921 (gt_perf_status & 0xff00) >> 8);
922 seq_printf(m, "Render p-state VID: %d\n",
923 gt_perf_status & 0xff);
924 seq_printf(m, "Render p-state limit: %d\n",
925 rp_state_limits & 0xff);
926 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
927 GEN6_CAGF_SHIFT) * 50);
928 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
929 GEN6_CURICONT_MASK);
930 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
931 GEN6_CURBSYTAVG_MASK);
932 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
933 GEN6_CURBSYTAVG_MASK);
934 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
935 GEN6_CURIAVG_MASK);
936 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
937 GEN6_CURBSYTAVG_MASK);
938 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
939 GEN6_CURBSYTAVG_MASK);
940
941 max_freq = (rp_state_cap & 0xff0000) >> 16;
942 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
943 max_freq * 50);
944
945 max_freq = (rp_state_cap & 0xff00) >> 8;
946 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
947 max_freq * 50);
948
949 max_freq = rp_state_cap & 0xff;
950 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
951 max_freq * 50);
952 } else {
953 seq_printf(m, "no P-state info available\n");
954 }
955
956 return 0;
957}
958
959static int i915_delayfreq_table(struct seq_file *m, void *unused)
960{
961 struct drm_info_node *node = (struct drm_info_node *) m->private;
962 struct drm_device *dev = node->minor->dev;
963 drm_i915_private_t *dev_priv = dev->dev_private;
964 u32 delayfreq;
965 int ret, i;
966
967 ret = mutex_lock_interruptible(&dev->struct_mutex);
968 if (ret)
969 return ret;
970
971 for (i = 0; i < 16; i++) {
972 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
973 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
974 (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
975 }
976
977 mutex_unlock(&dev->struct_mutex);
978
979 return 0;
980}
981
982static inline int MAP_TO_MV(int map)
983{
984 return 1250 - (map * 25);
985}
986
987static int i915_inttoext_table(struct seq_file *m, void *unused)
988{
989 struct drm_info_node *node = (struct drm_info_node *) m->private;
990 struct drm_device *dev = node->minor->dev;
991 drm_i915_private_t *dev_priv = dev->dev_private;
992 u32 inttoext;
993 int ret, i;
994
995 ret = mutex_lock_interruptible(&dev->struct_mutex);
996 if (ret)
997 return ret;
998
999 for (i = 1; i <= 32; i++) {
1000 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
1001 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
1002 }
1003
1004 mutex_unlock(&dev->struct_mutex);
1005
1006 return 0;
1007}
1008
1009static int ironlake_drpc_info(struct seq_file *m)
1010{
1011 struct drm_info_node *node = (struct drm_info_node *) m->private;
1012 struct drm_device *dev = node->minor->dev;
1013 drm_i915_private_t *dev_priv = dev->dev_private;
1014 u32 rgvmodectl, rstdbyctl;
1015 u16 crstandvid;
1016 int ret;
1017
1018 ret = mutex_lock_interruptible(&dev->struct_mutex);
1019 if (ret)
1020 return ret;
1021
1022 rgvmodectl = I915_READ(MEMMODECTL);
1023 rstdbyctl = I915_READ(RSTDBYCTL);
1024 crstandvid = I915_READ16(CRSTANDVID);
1025
1026 mutex_unlock(&dev->struct_mutex);
1027
1028 seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1029 "yes" : "no");
1030 seq_printf(m, "Boost freq: %d\n",
1031 (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1032 MEMMODE_BOOST_FREQ_SHIFT);
1033 seq_printf(m, "HW control enabled: %s\n",
1034 rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1035 seq_printf(m, "SW control enabled: %s\n",
1036 rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1037 seq_printf(m, "Gated voltage change: %s\n",
1038 rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1039 seq_printf(m, "Starting frequency: P%d\n",
1040 (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1041 seq_printf(m, "Max P-state: P%d\n",
1042 (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1043 seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1044 seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1045 seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1046 seq_printf(m, "Render standby enabled: %s\n",
1047 (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1048 seq_printf(m, "Current RS state: ");
1049 switch (rstdbyctl & RSX_STATUS_MASK) {
1050 case RSX_STATUS_ON:
1051 seq_printf(m, "on\n");
1052 break;
1053 case RSX_STATUS_RC1:
1054 seq_printf(m, "RC1\n");
1055 break;
1056 case RSX_STATUS_RC1E:
1057 seq_printf(m, "RC1E\n");
1058 break;
1059 case RSX_STATUS_RS1:
1060 seq_printf(m, "RS1\n");
1061 break;
1062 case RSX_STATUS_RS2:
1063 seq_printf(m, "RS2 (RC6)\n");
1064 break;
1065 case RSX_STATUS_RS3:
1066 seq_printf(m, "RC3 (RC6+)\n");
1067 break;
1068 default:
1069 seq_printf(m, "unknown\n");
1070 break;
1071 }
1072
1073 return 0;
1074}
1075
1076static int gen6_drpc_info(struct seq_file *m)
1077{
1078
1079 struct drm_info_node *node = (struct drm_info_node *) m->private;
1080 struct drm_device *dev = node->minor->dev;
1081 struct drm_i915_private *dev_priv = dev->dev_private;
1082 u32 rpmodectl1, gt_core_status, rcctl1;
1083 unsigned forcewake_count;
1084 int count=0, ret;
1085
1086
1087 ret = mutex_lock_interruptible(&dev->struct_mutex);
1088 if (ret)
1089 return ret;
1090
1091 spin_lock_irq(&dev_priv->gt_lock);
1092 forcewake_count = dev_priv->forcewake_count;
1093 spin_unlock_irq(&dev_priv->gt_lock);
1094
1095 if (forcewake_count) {
1096 seq_printf(m, "RC information inaccurate because somebody "
1097 "holds a forcewake reference \n");
1098 } else {
1099 /* NB: we cannot use forcewake, else we read the wrong values */
1100 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1101 udelay(10);
1102 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1103 }
1104
1105 gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1106 trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1107
1108 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1109 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1110 mutex_unlock(&dev->struct_mutex);
1111
1112 seq_printf(m, "Video Turbo Mode: %s\n",
1113 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1114 seq_printf(m, "HW control enabled: %s\n",
1115 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1116 seq_printf(m, "SW control enabled: %s\n",
1117 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1118 GEN6_RP_MEDIA_SW_MODE));
1119 seq_printf(m, "RC1e Enabled: %s\n",
1120 yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1121 seq_printf(m, "RC6 Enabled: %s\n",
1122 yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1123 seq_printf(m, "Deep RC6 Enabled: %s\n",
1124 yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1125 seq_printf(m, "Deepest RC6 Enabled: %s\n",
1126 yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1127 seq_printf(m, "Current RC state: ");
1128 switch (gt_core_status & GEN6_RCn_MASK) {
1129 case GEN6_RC0:
1130 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1131 seq_printf(m, "Core Power Down\n");
1132 else
1133 seq_printf(m, "on\n");
1134 break;
1135 case GEN6_RC3:
1136 seq_printf(m, "RC3\n");
1137 break;
1138 case GEN6_RC6:
1139 seq_printf(m, "RC6\n");
1140 break;
1141 case GEN6_RC7:
1142 seq_printf(m, "RC7\n");
1143 break;
1144 default:
1145 seq_printf(m, "Unknown\n");
1146 break;
1147 }
1148
1149 seq_printf(m, "Core Power Down: %s\n",
1150 yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1151
1152 /* Not exactly sure what this is */
1153 seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1154 I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1155 seq_printf(m, "RC6 residency since boot: %u\n",
1156 I915_READ(GEN6_GT_GFX_RC6));
1157 seq_printf(m, "RC6+ residency since boot: %u\n",
1158 I915_READ(GEN6_GT_GFX_RC6p));
1159 seq_printf(m, "RC6++ residency since boot: %u\n",
1160 I915_READ(GEN6_GT_GFX_RC6pp));
1161
1162 return 0;
1163}
1164
1165static int i915_drpc_info(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
1170 if (IS_GEN6(dev) || IS_GEN7(dev))
1171 return gen6_drpc_info(m);
1172 else
1173 return ironlake_drpc_info(m);
1174}
1175
1176static int i915_fbc_status(struct seq_file *m, void *unused)
1177{
1178 struct drm_info_node *node = (struct drm_info_node *) m->private;
1179 struct drm_device *dev = node->minor->dev;
1180 drm_i915_private_t *dev_priv = dev->dev_private;
1181
1182 if (!I915_HAS_FBC(dev)) {
1183 seq_printf(m, "FBC unsupported on this chipset\n");
1184 return 0;
1185 }
1186
1187 if (intel_fbc_enabled(dev)) {
1188 seq_printf(m, "FBC enabled\n");
1189 } else {
1190 seq_printf(m, "FBC disabled: ");
1191 switch (dev_priv->no_fbc_reason) {
1192 case FBC_NO_OUTPUT:
1193 seq_printf(m, "no outputs");
1194 break;
1195 case FBC_STOLEN_TOO_SMALL:
1196 seq_printf(m, "not enough stolen memory");
1197 break;
1198 case FBC_UNSUPPORTED_MODE:
1199 seq_printf(m, "mode not supported");
1200 break;
1201 case FBC_MODE_TOO_LARGE:
1202 seq_printf(m, "mode too large");
1203 break;
1204 case FBC_BAD_PLANE:
1205 seq_printf(m, "FBC unsupported on plane");
1206 break;
1207 case FBC_NOT_TILED:
1208 seq_printf(m, "scanout buffer not tiled");
1209 break;
1210 case FBC_MULTIPLE_PIPES:
1211 seq_printf(m, "multiple pipes are enabled");
1212 break;
1213 case FBC_MODULE_PARAM:
1214 seq_printf(m, "disabled per module param (default off)");
1215 break;
1216 default:
1217 seq_printf(m, "unknown reason");
1218 }
1219 seq_printf(m, "\n");
1220 }
1221 return 0;
1222}
1223
1224static int i915_sr_status(struct seq_file *m, void *unused)
1225{
1226 struct drm_info_node *node = (struct drm_info_node *) m->private;
1227 struct drm_device *dev = node->minor->dev;
1228 drm_i915_private_t *dev_priv = dev->dev_private;
1229 bool sr_enabled = false;
1230
1231 if (HAS_PCH_SPLIT(dev))
1232 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1233 else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1234 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1235 else if (IS_I915GM(dev))
1236 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1237 else if (IS_PINEVIEW(dev))
1238 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1239
1240 seq_printf(m, "self-refresh: %s\n",
1241 sr_enabled ? "enabled" : "disabled");
1242
1243 return 0;
1244}
1245
1246static int i915_emon_status(struct seq_file *m, void *unused)
1247{
1248 struct drm_info_node *node = (struct drm_info_node *) m->private;
1249 struct drm_device *dev = node->minor->dev;
1250 drm_i915_private_t *dev_priv = dev->dev_private;
1251 unsigned long temp, chipset, gfx;
1252 int ret;
1253
1254 if (!IS_GEN5(dev))
1255 return -ENODEV;
1256
1257 ret = mutex_lock_interruptible(&dev->struct_mutex);
1258 if (ret)
1259 return ret;
1260
1261 temp = i915_mch_val(dev_priv);
1262 chipset = i915_chipset_val(dev_priv);
1263 gfx = i915_gfx_val(dev_priv);
1264 mutex_unlock(&dev->struct_mutex);
1265
1266 seq_printf(m, "GMCH temp: %ld\n", temp);
1267 seq_printf(m, "Chipset power: %ld\n", chipset);
1268 seq_printf(m, "GFX power: %ld\n", gfx);
1269 seq_printf(m, "Total power: %ld\n", chipset + gfx);
1270
1271 return 0;
1272}
1273
1274static int i915_ring_freq_table(struct seq_file *m, void *unused)
1275{
1276 struct drm_info_node *node = (struct drm_info_node *) m->private;
1277 struct drm_device *dev = node->minor->dev;
1278 drm_i915_private_t *dev_priv = dev->dev_private;
1279 int ret;
1280 int gpu_freq, ia_freq;
1281
1282 if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1283 seq_printf(m, "unsupported on this chipset\n");
1284 return 0;
1285 }
1286
1287 ret = mutex_lock_interruptible(&dev->struct_mutex);
1288 if (ret)
1289 return ret;
1290
1291 seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1292
1293 for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1294 gpu_freq++) {
1295 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1296 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1297 GEN6_PCODE_READ_MIN_FREQ_TABLE);
1298 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1299 GEN6_PCODE_READY) == 0, 10)) {
1300 DRM_ERROR("pcode read of freq table timed out\n");
1301 continue;
1302 }
1303 ia_freq = I915_READ(GEN6_PCODE_DATA);
1304 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1305 }
1306
1307 mutex_unlock(&dev->struct_mutex);
1308
1309 return 0;
1310}
1311
1312static int i915_gfxec(struct seq_file *m, void *unused)
1313{
1314 struct drm_info_node *node = (struct drm_info_node *) m->private;
1315 struct drm_device *dev = node->minor->dev;
1316 drm_i915_private_t *dev_priv = dev->dev_private;
1317 int ret;
1318
1319 ret = mutex_lock_interruptible(&dev->struct_mutex);
1320 if (ret)
1321 return ret;
1322
1323 seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1324
1325 mutex_unlock(&dev->struct_mutex);
1326
1327 return 0;
1328}
1329
1330static int i915_opregion(struct seq_file *m, void *unused)
1331{
1332 struct drm_info_node *node = (struct drm_info_node *) m->private;
1333 struct drm_device *dev = node->minor->dev;
1334 drm_i915_private_t *dev_priv = dev->dev_private;
1335 struct intel_opregion *opregion = &dev_priv->opregion;
1336 void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1337 int ret;
1338
1339 if (data == NULL)
1340 return -ENOMEM;
1341
1342 ret = mutex_lock_interruptible(&dev->struct_mutex);
1343 if (ret)
1344 goto out;
1345
1346 if (opregion->header) {
1347 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1348 seq_write(m, data, OPREGION_SIZE);
1349 }
1350
1351 mutex_unlock(&dev->struct_mutex);
1352
1353out:
1354 kfree(data);
1355 return 0;
1356}
1357
1358static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1359{
1360 struct drm_info_node *node = (struct drm_info_node *) m->private;
1361 struct drm_device *dev = node->minor->dev;
1362 drm_i915_private_t *dev_priv = dev->dev_private;
1363 struct intel_fbdev *ifbdev;
1364 struct intel_framebuffer *fb;
1365 int ret;
1366
1367 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1368 if (ret)
1369 return ret;
1370
1371 ifbdev = dev_priv->fbdev;
1372 fb = to_intel_framebuffer(ifbdev->helper.fb);
1373
1374 seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1375 fb->base.width,
1376 fb->base.height,
1377 fb->base.depth,
1378 fb->base.bits_per_pixel);
1379 describe_obj(m, fb->obj);
1380 seq_printf(m, "\n");
1381
1382 list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1383 if (&fb->base == ifbdev->helper.fb)
1384 continue;
1385
1386 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1387 fb->base.width,
1388 fb->base.height,
1389 fb->base.depth,
1390 fb->base.bits_per_pixel);
1391 describe_obj(m, fb->obj);
1392 seq_printf(m, "\n");
1393 }
1394
1395 mutex_unlock(&dev->mode_config.mutex);
1396
1397 return 0;
1398}
1399
1400static int i915_context_status(struct seq_file *m, void *unused)
1401{
1402 struct drm_info_node *node = (struct drm_info_node *) m->private;
1403 struct drm_device *dev = node->minor->dev;
1404 drm_i915_private_t *dev_priv = dev->dev_private;
1405 int ret;
1406
1407 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1408 if (ret)
1409 return ret;
1410
1411 if (dev_priv->pwrctx) {
1412 seq_printf(m, "power context ");
1413 describe_obj(m, dev_priv->pwrctx);
1414 seq_printf(m, "\n");
1415 }
1416
1417 if (dev_priv->renderctx) {
1418 seq_printf(m, "render context ");
1419 describe_obj(m, dev_priv->renderctx);
1420 seq_printf(m, "\n");
1421 }
1422
1423 mutex_unlock(&dev->mode_config.mutex);
1424
1425 return 0;
1426}
1427
1428static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1429{
1430 struct drm_info_node *node = (struct drm_info_node *) m->private;
1431 struct drm_device *dev = node->minor->dev;
1432 struct drm_i915_private *dev_priv = dev->dev_private;
1433 unsigned forcewake_count;
1434
1435 spin_lock_irq(&dev_priv->gt_lock);
1436 forcewake_count = dev_priv->forcewake_count;
1437 spin_unlock_irq(&dev_priv->gt_lock);
1438
1439 seq_printf(m, "forcewake count = %u\n", forcewake_count);
1440
1441 return 0;
1442}
1443
1444static const char *swizzle_string(unsigned swizzle)
1445{
1446 switch(swizzle) {
1447 case I915_BIT_6_SWIZZLE_NONE:
1448 return "none";
1449 case I915_BIT_6_SWIZZLE_9:
1450 return "bit9";
1451 case I915_BIT_6_SWIZZLE_9_10:
1452 return "bit9/bit10";
1453 case I915_BIT_6_SWIZZLE_9_11:
1454 return "bit9/bit11";
1455 case I915_BIT_6_SWIZZLE_9_10_11:
1456 return "bit9/bit10/bit11";
1457 case I915_BIT_6_SWIZZLE_9_17:
1458 return "bit9/bit17";
1459 case I915_BIT_6_SWIZZLE_9_10_17:
1460 return "bit9/bit10/bit17";
1461 case I915_BIT_6_SWIZZLE_UNKNOWN:
1462 return "unkown";
1463 }
1464
1465 return "bug";
1466}
1467
1468static int i915_swizzle_info(struct seq_file *m, void *data)
1469{
1470 struct drm_info_node *node = (struct drm_info_node *) m->private;
1471 struct drm_device *dev = node->minor->dev;
1472 struct drm_i915_private *dev_priv = dev->dev_private;
1473
1474 mutex_lock(&dev->struct_mutex);
1475 seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1476 swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1477 seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1478 swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1479
1480 if (IS_GEN3(dev) || IS_GEN4(dev)) {
1481 seq_printf(m, "DDC = 0x%08x\n",
1482 I915_READ(DCC));
1483 seq_printf(m, "C0DRB3 = 0x%04x\n",
1484 I915_READ16(C0DRB3));
1485 seq_printf(m, "C1DRB3 = 0x%04x\n",
1486 I915_READ16(C1DRB3));
1487 } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1488 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1489 I915_READ(MAD_DIMM_C0));
1490 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1491 I915_READ(MAD_DIMM_C1));
1492 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1493 I915_READ(MAD_DIMM_C2));
1494 seq_printf(m, "TILECTL = 0x%08x\n",
1495 I915_READ(TILECTL));
1496 seq_printf(m, "ARB_MODE = 0x%08x\n",
1497 I915_READ(ARB_MODE));
1498 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1499 I915_READ(DISP_ARB_CTL));
1500 }
1501 mutex_unlock(&dev->struct_mutex);
1502
1503 return 0;
1504}
1505
1506static int i915_ppgtt_info(struct seq_file *m, void *data)
1507{
1508 struct drm_info_node *node = (struct drm_info_node *) m->private;
1509 struct drm_device *dev = node->minor->dev;
1510 struct drm_i915_private *dev_priv = dev->dev_private;
1511 struct intel_ring_buffer *ring;
1512 int i, ret;
1513
1514
1515 ret = mutex_lock_interruptible(&dev->struct_mutex);
1516 if (ret)
1517 return ret;
1518 if (INTEL_INFO(dev)->gen == 6)
1519 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1520
1521 for (i = 0; i < I915_NUM_RINGS; i++) {
1522 ring = &dev_priv->ring[i];
1523
1524 seq_printf(m, "%s\n", ring->name);
1525 if (INTEL_INFO(dev)->gen == 7)
1526 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1527 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1528 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1529 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1530 }
1531 if (dev_priv->mm.aliasing_ppgtt) {
1532 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1533
1534 seq_printf(m, "aliasing PPGTT:\n");
1535 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1536 }
1537 seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1538 mutex_unlock(&dev->struct_mutex);
1539
1540 return 0;
1541}
1542
1543static int i915_dpio_info(struct seq_file *m, void *data)
1544{
1545 struct drm_info_node *node = (struct drm_info_node *) m->private;
1546 struct drm_device *dev = node->minor->dev;
1547 struct drm_i915_private *dev_priv = dev->dev_private;
1548 int ret;
1549
1550
1551 if (!IS_VALLEYVIEW(dev)) {
1552 seq_printf(m, "unsupported\n");
1553 return 0;
1554 }
1555
1556 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1557 if (ret)
1558 return ret;
1559
1560 seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1561
1562 seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1563 intel_dpio_read(dev_priv, _DPIO_DIV_A));
1564 seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1565 intel_dpio_read(dev_priv, _DPIO_DIV_B));
1566
1567 seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1568 intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1569 seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1570 intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1571
1572 seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1573 intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1574 seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1575 intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1576
1577 seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1578 intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1579 seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1580 intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1581
1582 seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1583 intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1584
1585 mutex_unlock(&dev->mode_config.mutex);
1586
1587 return 0;
1588}
1589
1590static ssize_t
1591i915_wedged_read(struct file *filp,
1592 char __user *ubuf,
1593 size_t max,
1594 loff_t *ppos)
1595{
1596 struct drm_device *dev = filp->private_data;
1597 drm_i915_private_t *dev_priv = dev->dev_private;
1598 char buf[80];
1599 int len;
1600
1601 len = snprintf(buf, sizeof(buf),
1602 "wedged : %d\n",
1603 atomic_read(&dev_priv->mm.wedged));
1604
1605 if (len > sizeof(buf))
1606 len = sizeof(buf);
1607
1608 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1609}
1610
1611static ssize_t
1612i915_wedged_write(struct file *filp,
1613 const char __user *ubuf,
1614 size_t cnt,
1615 loff_t *ppos)
1616{
1617 struct drm_device *dev = filp->private_data;
1618 char buf[20];
1619 int val = 1;
1620
1621 if (cnt > 0) {
1622 if (cnt > sizeof(buf) - 1)
1623 return -EINVAL;
1624
1625 if (copy_from_user(buf, ubuf, cnt))
1626 return -EFAULT;
1627 buf[cnt] = 0;
1628
1629 val = simple_strtoul(buf, NULL, 0);
1630 }
1631
1632 DRM_INFO("Manually setting wedged to %d\n", val);
1633 i915_handle_error(dev, val);
1634
1635 return cnt;
1636}
1637
1638static const struct file_operations i915_wedged_fops = {
1639 .owner = THIS_MODULE,
1640 .open = simple_open,
1641 .read = i915_wedged_read,
1642 .write = i915_wedged_write,
1643 .llseek = default_llseek,
1644};
1645
1646static ssize_t
1647i915_ring_stop_read(struct file *filp,
1648 char __user *ubuf,
1649 size_t max,
1650 loff_t *ppos)
1651{
1652 struct drm_device *dev = filp->private_data;
1653 drm_i915_private_t *dev_priv = dev->dev_private;
1654 char buf[20];
1655 int len;
1656
1657 len = snprintf(buf, sizeof(buf),
1658 "0x%08x\n", dev_priv->stop_rings);
1659
1660 if (len > sizeof(buf))
1661 len = sizeof(buf);
1662
1663 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1664}
1665
1666static ssize_t
1667i915_ring_stop_write(struct file *filp,
1668 const char __user *ubuf,
1669 size_t cnt,
1670 loff_t *ppos)
1671{
1672 struct drm_device *dev = filp->private_data;
1673 struct drm_i915_private *dev_priv = dev->dev_private;
1674 char buf[20];
1675 int val = 0;
1676
1677 if (cnt > 0) {
1678 if (cnt > sizeof(buf) - 1)
1679 return -EINVAL;
1680
1681 if (copy_from_user(buf, ubuf, cnt))
1682 return -EFAULT;
1683 buf[cnt] = 0;
1684
1685 val = simple_strtoul(buf, NULL, 0);
1686 }
1687
1688 DRM_DEBUG_DRIVER("Stopping rings 0x%08x\n", val);
1689
1690 mutex_lock(&dev->struct_mutex);
1691 dev_priv->stop_rings = val;
1692 mutex_unlock(&dev->struct_mutex);
1693
1694 return cnt;
1695}
1696
1697static const struct file_operations i915_ring_stop_fops = {
1698 .owner = THIS_MODULE,
1699 .open = simple_open,
1700 .read = i915_ring_stop_read,
1701 .write = i915_ring_stop_write,
1702 .llseek = default_llseek,
1703};
1704
1705static ssize_t
1706i915_max_freq_read(struct file *filp,
1707 char __user *ubuf,
1708 size_t max,
1709 loff_t *ppos)
1710{
1711 struct drm_device *dev = filp->private_data;
1712 drm_i915_private_t *dev_priv = dev->dev_private;
1713 char buf[80];
1714 int len;
1715
1716 len = snprintf(buf, sizeof(buf),
1717 "max freq: %d\n", dev_priv->max_delay * 50);
1718
1719 if (len > sizeof(buf))
1720 len = sizeof(buf);
1721
1722 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1723}
1724
1725static ssize_t
1726i915_max_freq_write(struct file *filp,
1727 const char __user *ubuf,
1728 size_t cnt,
1729 loff_t *ppos)
1730{
1731 struct drm_device *dev = filp->private_data;
1732 struct drm_i915_private *dev_priv = dev->dev_private;
1733 char buf[20];
1734 int val = 1;
1735
1736 if (cnt > 0) {
1737 if (cnt > sizeof(buf) - 1)
1738 return -EINVAL;
1739
1740 if (copy_from_user(buf, ubuf, cnt))
1741 return -EFAULT;
1742 buf[cnt] = 0;
1743
1744 val = simple_strtoul(buf, NULL, 0);
1745 }
1746
1747 DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1748
1749 /*
1750 * Turbo will still be enabled, but won't go above the set value.
1751 */
1752 dev_priv->max_delay = val / 50;
1753
1754 gen6_set_rps(dev, val / 50);
1755
1756 return cnt;
1757}
1758
1759static const struct file_operations i915_max_freq_fops = {
1760 .owner = THIS_MODULE,
1761 .open = simple_open,
1762 .read = i915_max_freq_read,
1763 .write = i915_max_freq_write,
1764 .llseek = default_llseek,
1765};
1766
1767static ssize_t
1768i915_cache_sharing_read(struct file *filp,
1769 char __user *ubuf,
1770 size_t max,
1771 loff_t *ppos)
1772{
1773 struct drm_device *dev = filp->private_data;
1774 drm_i915_private_t *dev_priv = dev->dev_private;
1775 char buf[80];
1776 u32 snpcr;
1777 int len;
1778
1779 mutex_lock(&dev_priv->dev->struct_mutex);
1780 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1781 mutex_unlock(&dev_priv->dev->struct_mutex);
1782
1783 len = snprintf(buf, sizeof(buf),
1784 "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1785 GEN6_MBC_SNPCR_SHIFT);
1786
1787 if (len > sizeof(buf))
1788 len = sizeof(buf);
1789
1790 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1791}
1792
1793static ssize_t
1794i915_cache_sharing_write(struct file *filp,
1795 const char __user *ubuf,
1796 size_t cnt,
1797 loff_t *ppos)
1798{
1799 struct drm_device *dev = filp->private_data;
1800 struct drm_i915_private *dev_priv = dev->dev_private;
1801 char buf[20];
1802 u32 snpcr;
1803 int val = 1;
1804
1805 if (cnt > 0) {
1806 if (cnt > sizeof(buf) - 1)
1807 return -EINVAL;
1808
1809 if (copy_from_user(buf, ubuf, cnt))
1810 return -EFAULT;
1811 buf[cnt] = 0;
1812
1813 val = simple_strtoul(buf, NULL, 0);
1814 }
1815
1816 if (val < 0 || val > 3)
1817 return -EINVAL;
1818
1819 DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1820
1821 /* Update the cache sharing policy here as well */
1822 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1823 snpcr &= ~GEN6_MBC_SNPCR_MASK;
1824 snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1825 I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1826
1827 return cnt;
1828}
1829
1830static const struct file_operations i915_cache_sharing_fops = {
1831 .owner = THIS_MODULE,
1832 .open = simple_open,
1833 .read = i915_cache_sharing_read,
1834 .write = i915_cache_sharing_write,
1835 .llseek = default_llseek,
1836};
1837
1838/* As the drm_debugfs_init() routines are called before dev->dev_private is
1839 * allocated we need to hook into the minor for release. */
1840static int
1841drm_add_fake_info_node(struct drm_minor *minor,
1842 struct dentry *ent,
1843 const void *key)
1844{
1845 struct drm_info_node *node;
1846
1847 node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1848 if (node == NULL) {
1849 debugfs_remove(ent);
1850 return -ENOMEM;
1851 }
1852
1853 node->minor = minor;
1854 node->dent = ent;
1855 node->info_ent = (void *) key;
1856
1857 mutex_lock(&minor->debugfs_lock);
1858 list_add(&node->list, &minor->debugfs_list);
1859 mutex_unlock(&minor->debugfs_lock);
1860
1861 return 0;
1862}
1863
1864static int i915_forcewake_open(struct inode *inode, struct file *file)
1865{
1866 struct drm_device *dev = inode->i_private;
1867 struct drm_i915_private *dev_priv = dev->dev_private;
1868 int ret;
1869
1870 if (INTEL_INFO(dev)->gen < 6)
1871 return 0;
1872
1873 ret = mutex_lock_interruptible(&dev->struct_mutex);
1874 if (ret)
1875 return ret;
1876 gen6_gt_force_wake_get(dev_priv);
1877 mutex_unlock(&dev->struct_mutex);
1878
1879 return 0;
1880}
1881
1882static int i915_forcewake_release(struct inode *inode, struct file *file)
1883{
1884 struct drm_device *dev = inode->i_private;
1885 struct drm_i915_private *dev_priv = dev->dev_private;
1886
1887 if (INTEL_INFO(dev)->gen < 6)
1888 return 0;
1889
1890 /*
1891 * It's bad that we can potentially hang userspace if struct_mutex gets
1892 * forever stuck. However, if we cannot acquire this lock it means that
1893 * almost certainly the driver has hung, is not unload-able. Therefore
1894 * hanging here is probably a minor inconvenience not to be seen my
1895 * almost every user.
1896 */
1897 mutex_lock(&dev->struct_mutex);
1898 gen6_gt_force_wake_put(dev_priv);
1899 mutex_unlock(&dev->struct_mutex);
1900
1901 return 0;
1902}
1903
1904static const struct file_operations i915_forcewake_fops = {
1905 .owner = THIS_MODULE,
1906 .open = i915_forcewake_open,
1907 .release = i915_forcewake_release,
1908};
1909
1910static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1911{
1912 struct drm_device *dev = minor->dev;
1913 struct dentry *ent;
1914
1915 ent = debugfs_create_file("i915_forcewake_user",
1916 S_IRUSR,
1917 root, dev,
1918 &i915_forcewake_fops);
1919 if (IS_ERR(ent))
1920 return PTR_ERR(ent);
1921
1922 return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1923}
1924
1925static int i915_debugfs_create(struct dentry *root,
1926 struct drm_minor *minor,
1927 const char *name,
1928 const struct file_operations *fops)
1929{
1930 struct drm_device *dev = minor->dev;
1931 struct dentry *ent;
1932
1933 ent = debugfs_create_file(name,
1934 S_IRUGO | S_IWUSR,
1935 root, dev,
1936 fops);
1937 if (IS_ERR(ent))
1938 return PTR_ERR(ent);
1939
1940 return drm_add_fake_info_node(minor, ent, fops);
1941}
1942
1943static struct drm_info_list i915_debugfs_list[] = {
1944 {"i915_capabilities", i915_capabilities, 0},
1945 {"i915_gem_objects", i915_gem_object_info, 0},
1946 {"i915_gem_gtt", i915_gem_gtt_info, 0},
1947 {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
1948 {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1949 {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1950 {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1951 {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1952 {"i915_gem_request", i915_gem_request_info, 0},
1953 {"i915_gem_seqno", i915_gem_seqno_info, 0},
1954 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1955 {"i915_gem_interrupt", i915_interrupt_info, 0},
1956 {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1957 {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1958 {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1959 {"i915_rstdby_delays", i915_rstdby_delays, 0},
1960 {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1961 {"i915_delayfreq_table", i915_delayfreq_table, 0},
1962 {"i915_inttoext_table", i915_inttoext_table, 0},
1963 {"i915_drpc_info", i915_drpc_info, 0},
1964 {"i915_emon_status", i915_emon_status, 0},
1965 {"i915_ring_freq_table", i915_ring_freq_table, 0},
1966 {"i915_gfxec", i915_gfxec, 0},
1967 {"i915_fbc_status", i915_fbc_status, 0},
1968 {"i915_sr_status", i915_sr_status, 0},
1969 {"i915_opregion", i915_opregion, 0},
1970 {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1971 {"i915_context_status", i915_context_status, 0},
1972 {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1973 {"i915_swizzle_info", i915_swizzle_info, 0},
1974 {"i915_ppgtt_info", i915_ppgtt_info, 0},
1975 {"i915_dpio", i915_dpio_info, 0},
1976};
1977#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1978
1979int i915_debugfs_init(struct drm_minor *minor)
1980{
1981 int ret;
1982
1983 ret = i915_debugfs_create(minor->debugfs_root, minor,
1984 "i915_wedged",
1985 &i915_wedged_fops);
1986 if (ret)
1987 return ret;
1988
1989 ret = i915_forcewake_create(minor->debugfs_root, minor);
1990 if (ret)
1991 return ret;
1992
1993 ret = i915_debugfs_create(minor->debugfs_root, minor,
1994 "i915_max_freq",
1995 &i915_max_freq_fops);
1996 if (ret)
1997 return ret;
1998
1999 ret = i915_debugfs_create(minor->debugfs_root, minor,
2000 "i915_cache_sharing",
2001 &i915_cache_sharing_fops);
2002 if (ret)
2003 return ret;
2004 ret = i915_debugfs_create(minor->debugfs_root, minor,
2005 "i915_ring_stop",
2006 &i915_ring_stop_fops);
2007 if (ret)
2008 return ret;
2009
2010 ret = i915_debugfs_create(minor->debugfs_root, minor,
2011 "i915_error_state",
2012 &i915_error_state_fops);
2013 if (ret)
2014 return ret;
2015
2016 return drm_debugfs_create_files(i915_debugfs_list,
2017 I915_DEBUGFS_ENTRIES,
2018 minor->debugfs_root, minor);
2019}
2020
2021void i915_debugfs_cleanup(struct drm_minor *minor)
2022{
2023 drm_debugfs_remove_files(i915_debugfs_list,
2024 I915_DEBUGFS_ENTRIES, minor);
2025 drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2026 1, minor);
2027 drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
2028 1, minor);
2029 drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
2030 1, minor);
2031 drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
2032 1, minor);
2033 drm_debugfs_remove_files((struct drm_info_list *) &i915_ring_stop_fops,
2034 1, minor);
2035 drm_debugfs_remove_files((struct drm_info_list *) &i915_error_state_fops,
2036 1, minor);
2037}
2038
2039#endif /* CONFIG_DEBUG_FS */