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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / gpu / drm / i915 / i915_debugfs.c
blobdeaa657292b45b910a81cd9a018baf81c1fce6dc
1 /*
2 * Copyright © 2008 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 * Keith Packard <keithp@keithp.com>
26 *
27 */
28
29 #include <linux/seq_file.h>
30 #include <linux/debugfs.h>
31 #include <linux/slab.h>
32 #include <linux/export.h>
33 #include "drmP.h"
34 #include "drm.h"
35 #include "intel_drv.h"
36 #include "intel_ringbuffer.h"
37 #include "i915_drm.h"
38 #include "i915_drv.h"
39
40 #define DRM_I915_RING_DEBUG 1
41
42
43 #if defined(CONFIG_DEBUG_FS)
44
45 enum {
46 ACTIVE_LIST,
47 FLUSHING_LIST,
48 INACTIVE_LIST,
49 PINNED_LIST,
50 DEFERRED_FREE_LIST,
51 };
52
53 static const char *yesno(int v)
54 {
55 return v ? "yes" : "no";
56 }
57
58 static int i915_capabilities(struct seq_file *m, void *data)
59 {
60 struct drm_info_node *node = (struct drm_info_node *) m->private;
61 struct drm_device *dev = node->minor->dev;
62 const struct intel_device_info *info = INTEL_INFO(dev);
63
64 seq_printf(m, "gen: %d\n", info->gen);
65 seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
66 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
67 B(is_mobile);
68 B(is_i85x);
69 B(is_i915g);
70 B(is_i945gm);
71 B(is_g33);
72 B(need_gfx_hws);
73 B(is_g4x);
74 B(is_pineview);
75 B(is_broadwater);
76 B(is_crestline);
77 B(has_fbc);
78 B(has_pipe_cxsr);
79 B(has_hotplug);
80 B(cursor_needs_physical);
81 B(has_overlay);
82 B(overlay_needs_physical);
83 B(supports_tv);
84 B(has_bsd_ring);
85 B(has_blt_ring);
86 #undef B
87
88 return 0;
89 }
90
91 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
92 {
93 if (obj->user_pin_count > 0)
94 return "P";
95 else if (obj->pin_count > 0)
96 return "p";
97 else
98 return " ";
99 }
100
101 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
102 {
103 switch (obj->tiling_mode) {
104 default:
105 case I915_TILING_NONE: return " ";
106 case I915_TILING_X: return "X";
107 case I915_TILING_Y: return "Y";
108 }
109 }
110
111 static const char *cache_level_str(int type)
112 {
113 switch (type) {
114 case I915_CACHE_NONE: return " uncached";
115 case I915_CACHE_LLC: return " snooped (LLC)";
116 case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
117 default: return "";
118 }
119 }
120
121 static void
122 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
123 {
124 seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d%s%s%s",
125 &obj->base,
126 get_pin_flag(obj),
127 get_tiling_flag(obj),
128 obj->base.size / 1024,
129 obj->base.read_domains,
130 obj->base.write_domain,
131 obj->last_rendering_seqno,
132 obj->last_fenced_seqno,
133 cache_level_str(obj->cache_level),
134 obj->dirty ? " dirty" : "",
135 obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
136 if (obj->base.name)
137 seq_printf(m, " (name: %d)", obj->base.name);
138 if (obj->fence_reg != I915_FENCE_REG_NONE)
139 seq_printf(m, " (fence: %d)", obj->fence_reg);
140 if (obj->gtt_space != NULL)
141 seq_printf(m, " (gtt offset: %08x, size: %08x)",
142 obj->gtt_offset, (unsigned int)obj->gtt_space->size);
143 if (obj->pin_mappable || obj->fault_mappable) {
144 char s[3], *t = s;
145 if (obj->pin_mappable)
146 *t++ = 'p';
147 if (obj->fault_mappable)
148 *t++ = 'f';
149 *t = '\0';
150 seq_printf(m, " (%s mappable)", s);
151 }
152 if (obj->ring != NULL)
153 seq_printf(m, " (%s)", obj->ring->name);
154 }
155
156 static int i915_gem_object_list_info(struct seq_file *m, void *data)
157 {
158 struct drm_info_node *node = (struct drm_info_node *) m->private;
159 uintptr_t list = (uintptr_t) node->info_ent->data;
160 struct list_head *head;
161 struct drm_device *dev = node->minor->dev;
162 drm_i915_private_t *dev_priv = dev->dev_private;
163 struct drm_i915_gem_object *obj;
164 size_t total_obj_size, total_gtt_size;
165 int count, ret;
166
167 ret = mutex_lock_interruptible(&dev->struct_mutex);
168 if (ret)
169 return ret;
170
171 switch (list) {
172 case ACTIVE_LIST:
173 seq_printf(m, "Active:\n");
174 head = &dev_priv->mm.active_list;
175 break;
176 case INACTIVE_LIST:
177 seq_printf(m, "Inactive:\n");
178 head = &dev_priv->mm.inactive_list;
179 break;
180 case PINNED_LIST:
181 seq_printf(m, "Pinned:\n");
182 head = &dev_priv->mm.pinned_list;
183 break;
184 case FLUSHING_LIST:
185 seq_printf(m, "Flushing:\n");
186 head = &dev_priv->mm.flushing_list;
187 break;
188 case DEFERRED_FREE_LIST:
189 seq_printf(m, "Deferred free:\n");
190 head = &dev_priv->mm.deferred_free_list;
191 break;
192 default:
193 mutex_unlock(&dev->struct_mutex);
194 return -EINVAL;
195 }
196
197 total_obj_size = total_gtt_size = count = 0;
198 list_for_each_entry(obj, head, mm_list) {
199 seq_printf(m, " ");
200 describe_obj(m, obj);
201 seq_printf(m, "\n");
202 total_obj_size += obj->base.size;
203 total_gtt_size += obj->gtt_space->size;
204 count++;
205 }
206 mutex_unlock(&dev->struct_mutex);
207
208 seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
209 count, total_obj_size, total_gtt_size);
210 return 0;
211 }
212
213 #define count_objects(list, member) do { \
214 list_for_each_entry(obj, list, member) { \
215 size += obj->gtt_space->size; \
216 ++count; \
217 if (obj->map_and_fenceable) { \
218 mappable_size += obj->gtt_space->size; \
219 ++mappable_count; \
220 } \
221 } \
222 } while (0)
223
224 static int i915_gem_object_info(struct seq_file *m, void* data)
225 {
226 struct drm_info_node *node = (struct drm_info_node *) m->private;
227 struct drm_device *dev = node->minor->dev;
228 struct drm_i915_private *dev_priv = dev->dev_private;
229 u32 count, mappable_count;
230 size_t size, mappable_size;
231 struct drm_i915_gem_object *obj;
232 int ret;
233
234 ret = mutex_lock_interruptible(&dev->struct_mutex);
235 if (ret)
236 return ret;
237
238 seq_printf(m, "%u objects, %zu bytes\n",
239 dev_priv->mm.object_count,
240 dev_priv->mm.object_memory);
241
242 size = count = mappable_size = mappable_count = 0;
243 count_objects(&dev_priv->mm.gtt_list, gtt_list);
244 seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
245 count, mappable_count, size, mappable_size);
246
247 size = count = mappable_size = mappable_count = 0;
248 count_objects(&dev_priv->mm.active_list, mm_list);
249 count_objects(&dev_priv->mm.flushing_list, mm_list);
250 seq_printf(m, " %u [%u] active objects, %zu [%zu] bytes\n",
251 count, mappable_count, size, mappable_size);
252
253 size = count = mappable_size = mappable_count = 0;
254 count_objects(&dev_priv->mm.pinned_list, mm_list);
255 seq_printf(m, " %u [%u] pinned objects, %zu [%zu] bytes\n",
256 count, mappable_count, size, mappable_size);
257
258 size = count = mappable_size = mappable_count = 0;
259 count_objects(&dev_priv->mm.inactive_list, mm_list);
260 seq_printf(m, " %u [%u] inactive objects, %zu [%zu] bytes\n",
261 count, mappable_count, size, mappable_size);
262
263 size = count = mappable_size = mappable_count = 0;
264 count_objects(&dev_priv->mm.deferred_free_list, mm_list);
265 seq_printf(m, " %u [%u] freed objects, %zu [%zu] bytes\n",
266 count, mappable_count, size, mappable_size);
267
268 size = count = mappable_size = mappable_count = 0;
269 list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
270 if (obj->fault_mappable) {
271 size += obj->gtt_space->size;
272 ++count;
273 }
274 if (obj->pin_mappable) {
275 mappable_size += obj->gtt_space->size;
276 ++mappable_count;
277 }
278 }
279 seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
280 mappable_count, mappable_size);
281 seq_printf(m, "%u fault mappable objects, %zu bytes\n",
282 count, size);
283
284 seq_printf(m, "%zu [%zu] gtt total\n",
285 dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
286
287 mutex_unlock(&dev->struct_mutex);
288
289 return 0;
290 }
291
292 static int i915_gem_gtt_info(struct seq_file *m, void* data)
293 {
294 struct drm_info_node *node = (struct drm_info_node *) m->private;
295 struct drm_device *dev = node->minor->dev;
296 struct drm_i915_private *dev_priv = dev->dev_private;
297 struct drm_i915_gem_object *obj;
298 size_t total_obj_size, total_gtt_size;
299 int count, ret;
300
301 ret = mutex_lock_interruptible(&dev->struct_mutex);
302 if (ret)
303 return ret;
304
305 total_obj_size = total_gtt_size = count = 0;
306 list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
307 seq_printf(m, " ");
308 describe_obj(m, obj);
309 seq_printf(m, "\n");
310 total_obj_size += obj->base.size;
311 total_gtt_size += obj->gtt_space->size;
312 count++;
313 }
314
315 mutex_unlock(&dev->struct_mutex);
316
317 seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
318 count, total_obj_size, total_gtt_size);
319
320 return 0;
321 }
322
323
324 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
325 {
326 struct drm_info_node *node = (struct drm_info_node *) m->private;
327 struct drm_device *dev = node->minor->dev;
328 unsigned long flags;
329 struct intel_crtc *crtc;
330
331 list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
332 const char pipe = pipe_name(crtc->pipe);
333 const char plane = plane_name(crtc->plane);
334 struct intel_unpin_work *work;
335
336 spin_lock_irqsave(&dev->event_lock, flags);
337 work = crtc->unpin_work;
338 if (work == NULL) {
339 seq_printf(m, "No flip due on pipe %c (plane %c)\n",
340 pipe, plane);
341 } else {
342 if (!work->pending) {
343 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
344 pipe, plane);
345 } else {
346 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
347 pipe, plane);
348 }
349 if (work->enable_stall_check)
350 seq_printf(m, "Stall check enabled, ");
351 else
352 seq_printf(m, "Stall check waiting for page flip ioctl, ");
353 seq_printf(m, "%d prepares\n", work->pending);
354
355 if (work->old_fb_obj) {
356 struct drm_i915_gem_object *obj = work->old_fb_obj;
357 if (obj)
358 seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
359 }
360 if (work->pending_flip_obj) {
361 struct drm_i915_gem_object *obj = work->pending_flip_obj;
362 if (obj)
363 seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
364 }
365 }
366 spin_unlock_irqrestore(&dev->event_lock, flags);
367 }
368
369 return 0;
370 }
371
372 static int i915_gem_request_info(struct seq_file *m, void *data)
373 {
374 struct drm_info_node *node = (struct drm_info_node *) m->private;
375 struct drm_device *dev = node->minor->dev;
376 drm_i915_private_t *dev_priv = dev->dev_private;
377 struct drm_i915_gem_request *gem_request;
378 int ret, count;
379
380 ret = mutex_lock_interruptible(&dev->struct_mutex);
381 if (ret)
382 return ret;
383
384 count = 0;
385 if (!list_empty(&dev_priv->ring[RCS].request_list)) {
386 seq_printf(m, "Render requests:\n");
387 list_for_each_entry(gem_request,
388 &dev_priv->ring[RCS].request_list,
389 list) {
390 seq_printf(m, " %d @ %d\n",
391 gem_request->seqno,
392 (int) (jiffies - gem_request->emitted_jiffies));
393 }
394 count++;
395 }
396 if (!list_empty(&dev_priv->ring[VCS].request_list)) {
397 seq_printf(m, "BSD requests:\n");
398 list_for_each_entry(gem_request,
399 &dev_priv->ring[VCS].request_list,
400 list) {
401 seq_printf(m, " %d @ %d\n",
402 gem_request->seqno,
403 (int) (jiffies - gem_request->emitted_jiffies));
404 }
405 count++;
406 }
407 if (!list_empty(&dev_priv->ring[BCS].request_list)) {
408 seq_printf(m, "BLT requests:\n");
409 list_for_each_entry(gem_request,
410 &dev_priv->ring[BCS].request_list,
411 list) {
412 seq_printf(m, " %d @ %d\n",
413 gem_request->seqno,
414 (int) (jiffies - gem_request->emitted_jiffies));
415 }
416 count++;
417 }
418 mutex_unlock(&dev->struct_mutex);
419
420 if (count == 0)
421 seq_printf(m, "No requests\n");
422
423 return 0;
424 }
425
426 static void i915_ring_seqno_info(struct seq_file *m,
427 struct intel_ring_buffer *ring)
428 {
429 if (ring->get_seqno) {
430 seq_printf(m, "Current sequence (%s): %d\n",
431 ring->name, ring->get_seqno(ring));
432 seq_printf(m, "Waiter sequence (%s): %d\n",
433 ring->name, ring->waiting_seqno);
434 seq_printf(m, "IRQ sequence (%s): %d\n",
435 ring->name, ring->irq_seqno);
436 }
437 }
438
439 static int i915_gem_seqno_info(struct seq_file *m, void *data)
440 {
441 struct drm_info_node *node = (struct drm_info_node *) m->private;
442 struct drm_device *dev = node->minor->dev;
443 drm_i915_private_t *dev_priv = dev->dev_private;
444 int ret, i;
445
446 ret = mutex_lock_interruptible(&dev->struct_mutex);
447 if (ret)
448 return ret;
449
450 for (i = 0; i < I915_NUM_RINGS; i++)
451 i915_ring_seqno_info(m, &dev_priv->ring[i]);
452
453 mutex_unlock(&dev->struct_mutex);
454
455 return 0;
456 }
457
458
459 static int i915_interrupt_info(struct seq_file *m, void *data)
460 {
461 struct drm_info_node *node = (struct drm_info_node *) m->private;
462 struct drm_device *dev = node->minor->dev;
463 drm_i915_private_t *dev_priv = dev->dev_private;
464 int ret, i, pipe;
465
466 ret = mutex_lock_interruptible(&dev->struct_mutex);
467 if (ret)
468 return ret;
469
470 if (!HAS_PCH_SPLIT(dev)) {
471 seq_printf(m, "Interrupt enable: %08x\n",
472 I915_READ(IER));
473 seq_printf(m, "Interrupt identity: %08x\n",
474 I915_READ(IIR));
475 seq_printf(m, "Interrupt mask: %08x\n",
476 I915_READ(IMR));
477 for_each_pipe(pipe)
478 seq_printf(m, "Pipe %c stat: %08x\n",
479 pipe_name(pipe),
480 I915_READ(PIPESTAT(pipe)));
481 } else {
482 seq_printf(m, "North Display Interrupt enable: %08x\n",
483 I915_READ(DEIER));
484 seq_printf(m, "North Display Interrupt identity: %08x\n",
485 I915_READ(DEIIR));
486 seq_printf(m, "North Display Interrupt mask: %08x\n",
487 I915_READ(DEIMR));
488 seq_printf(m, "South Display Interrupt enable: %08x\n",
489 I915_READ(SDEIER));
490 seq_printf(m, "South Display Interrupt identity: %08x\n",
491 I915_READ(SDEIIR));
492 seq_printf(m, "South Display Interrupt mask: %08x\n",
493 I915_READ(SDEIMR));
494 seq_printf(m, "Graphics Interrupt enable: %08x\n",
495 I915_READ(GTIER));
496 seq_printf(m, "Graphics Interrupt identity: %08x\n",
497 I915_READ(GTIIR));
498 seq_printf(m, "Graphics Interrupt mask: %08x\n",
499 I915_READ(GTIMR));
500 }
501 seq_printf(m, "Interrupts received: %d\n",
502 atomic_read(&dev_priv->irq_received));
503 for (i = 0; i < I915_NUM_RINGS; i++) {
504 if (IS_GEN6(dev) || IS_GEN7(dev)) {
505 seq_printf(m, "Graphics Interrupt mask (%s): %08x\n",
506 dev_priv->ring[i].name,
507 I915_READ_IMR(&dev_priv->ring[i]));
508 }
509 i915_ring_seqno_info(m, &dev_priv->ring[i]);
510 }
511 mutex_unlock(&dev->struct_mutex);
512
513 return 0;
514 }
515
516 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
517 {
518 struct drm_info_node *node = (struct drm_info_node *) m->private;
519 struct drm_device *dev = node->minor->dev;
520 drm_i915_private_t *dev_priv = dev->dev_private;
521 int i, ret;
522
523 ret = mutex_lock_interruptible(&dev->struct_mutex);
524 if (ret)
525 return ret;
526
527 seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
528 seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
529 for (i = 0; i < dev_priv->num_fence_regs; i++) {
530 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
531
532 seq_printf(m, "Fenced object[%2d] = ", i);
533 if (obj == NULL)
534 seq_printf(m, "unused");
535 else
536 describe_obj(m, obj);
537 seq_printf(m, "\n");
538 }
539
540 mutex_unlock(&dev->struct_mutex);
541 return 0;
542 }
543
544 static int i915_hws_info(struct seq_file *m, void *data)
545 {
546 struct drm_info_node *node = (struct drm_info_node *) m->private;
547 struct drm_device *dev = node->minor->dev;
548 drm_i915_private_t *dev_priv = dev->dev_private;
549 struct intel_ring_buffer *ring;
550 const volatile u32 __iomem *hws;
551 int i;
552
553 ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
554 hws = (volatile u32 __iomem *)ring->status_page.page_addr;
555 if (hws == NULL)
556 return 0;
557
558 for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
559 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
560 i * 4,
561 hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
562 }
563 return 0;
564 }
565
566 static void i915_dump_object(struct seq_file *m,
567 struct io_mapping *mapping,
568 struct drm_i915_gem_object *obj)
569 {
570 int page, page_count, i;
571
572 page_count = obj->base.size / PAGE_SIZE;
573 for (page = 0; page < page_count; page++) {
574 u32 *mem = io_mapping_map_wc(mapping,
575 obj->gtt_offset + page * PAGE_SIZE);
576 for (i = 0; i < PAGE_SIZE; i += 4)
577 seq_printf(m, "%08x : %08x\n", i, mem[i / 4]);
578 io_mapping_unmap(mem);
579 }
580 }
581
582 static int i915_batchbuffer_info(struct seq_file *m, void *data)
583 {
584 struct drm_info_node *node = (struct drm_info_node *) m->private;
585 struct drm_device *dev = node->minor->dev;
586 drm_i915_private_t *dev_priv = dev->dev_private;
587 struct drm_i915_gem_object *obj;
588 int ret;
589
590 ret = mutex_lock_interruptible(&dev->struct_mutex);
591 if (ret)
592 return ret;
593
594 list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
595 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
596 seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
597 i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
598 }
599 }
600
601 mutex_unlock(&dev->struct_mutex);
602 return 0;
603 }
604
605 static int i915_ringbuffer_data(struct seq_file *m, void *data)
606 {
607 struct drm_info_node *node = (struct drm_info_node *) m->private;
608 struct drm_device *dev = node->minor->dev;
609 drm_i915_private_t *dev_priv = dev->dev_private;
610 struct intel_ring_buffer *ring;
611 int ret;
612
613 ret = mutex_lock_interruptible(&dev->struct_mutex);
614 if (ret)
615 return ret;
616
617 ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
618 if (!ring->obj) {
619 seq_printf(m, "No ringbuffer setup\n");
620 } else {
621 const u8 __iomem *virt = ring->virtual_start;
622 uint32_t off;
623
624 for (off = 0; off < ring->size; off += 4) {
625 uint32_t *ptr = (uint32_t *)(virt + off);
626 seq_printf(m, "%08x : %08x\n", off, *ptr);
627 }
628 }
629 mutex_unlock(&dev->struct_mutex);
630
631 return 0;
632 }
633
634 static int i915_ringbuffer_info(struct seq_file *m, void *data)
635 {
636 struct drm_info_node *node = (struct drm_info_node *) m->private;
637 struct drm_device *dev = node->minor->dev;
638 drm_i915_private_t *dev_priv = dev->dev_private;
639 struct intel_ring_buffer *ring;
640 int ret;
641
642 ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
643 if (ring->size == 0)
644 return 0;
645
646 ret = mutex_lock_interruptible(&dev->struct_mutex);
647 if (ret)
648 return ret;
649
650 seq_printf(m, "Ring %s:\n", ring->name);
651 seq_printf(m, " Head : %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
652 seq_printf(m, " Tail : %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
653 seq_printf(m, " Size : %08x\n", ring->size);
654 seq_printf(m, " Active : %08x\n", intel_ring_get_active_head(ring));
655 seq_printf(m, " NOPID : %08x\n", I915_READ_NOPID(ring));
656 if (IS_GEN6(dev) || IS_GEN7(dev)) {
657 seq_printf(m, " Sync 0 : %08x\n", I915_READ_SYNC_0(ring));
658 seq_printf(m, " Sync 1 : %08x\n", I915_READ_SYNC_1(ring));
659 }
660 seq_printf(m, " Control : %08x\n", I915_READ_CTL(ring));
661 seq_printf(m, " Start : %08x\n", I915_READ_START(ring));
662
663 mutex_unlock(&dev->struct_mutex);
664
665 return 0;
666 }
667
668 static const char *ring_str(int ring)
669 {
670 switch (ring) {
671 case RING_RENDER: return " render";
672 case RING_BSD: return " bsd";
673 case RING_BLT: return " blt";
674 default: return "";
675 }
676 }
677
678 static const char *pin_flag(int pinned)
679 {
680 if (pinned > 0)
681 return " P";
682 else if (pinned < 0)
683 return " p";
684 else
685 return "";
686 }
687
688 static const char *tiling_flag(int tiling)
689 {
690 switch (tiling) {
691 default:
692 case I915_TILING_NONE: return "";
693 case I915_TILING_X: return " X";
694 case I915_TILING_Y: return " Y";
695 }
696 }
697
698 static const char *dirty_flag(int dirty)
699 {
700 return dirty ? " dirty" : "";
701 }
702
703 static const char *purgeable_flag(int purgeable)
704 {
705 return purgeable ? " purgeable" : "";
706 }
707
708 static void print_error_buffers(struct seq_file *m,
709 const char *name,
710 struct drm_i915_error_buffer *err,
711 int count)
712 {
713 seq_printf(m, "%s [%d]:\n", name, count);
714
715 while (count--) {
716 seq_printf(m, " %08x %8u %04x %04x %08x%s%s%s%s%s%s",
717 err->gtt_offset,
718 err->size,
719 err->read_domains,
720 err->write_domain,
721 err->seqno,
722 pin_flag(err->pinned),
723 tiling_flag(err->tiling),
724 dirty_flag(err->dirty),
725 purgeable_flag(err->purgeable),
726 ring_str(err->ring),
727 cache_level_str(err->cache_level));
728
729 if (err->name)
730 seq_printf(m, " (name: %d)", err->name);
731 if (err->fence_reg != I915_FENCE_REG_NONE)
732 seq_printf(m, " (fence: %d)", err->fence_reg);
733
734 seq_printf(m, "\n");
735 err++;
736 }
737 }
738
739 static int i915_error_state(struct seq_file *m, void *unused)
740 {
741 struct drm_info_node *node = (struct drm_info_node *) m->private;
742 struct drm_device *dev = node->minor->dev;
743 drm_i915_private_t *dev_priv = dev->dev_private;
744 struct drm_i915_error_state *error;
745 unsigned long flags;
746 int i, page, offset, elt;
747
748 spin_lock_irqsave(&dev_priv->error_lock, flags);
749 if (!dev_priv->first_error) {
750 seq_printf(m, "no error state collected\n");
751 goto out;
752 }
753
754 error = dev_priv->first_error;
755
756 seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
757 error->time.tv_usec);
758 seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
759 seq_printf(m, "EIR: 0x%08x\n", error->eir);
760 seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
761 if (INTEL_INFO(dev)->gen >= 6) {
762 seq_printf(m, "ERROR: 0x%08x\n", error->error);
763 seq_printf(m, "Blitter command stream:\n");
764 seq_printf(m, " ACTHD: 0x%08x\n", error->bcs_acthd);
765 seq_printf(m, " IPEIR: 0x%08x\n", error->bcs_ipeir);
766 seq_printf(m, " IPEHR: 0x%08x\n", error->bcs_ipehr);
767 seq_printf(m, " INSTDONE: 0x%08x\n", error->bcs_instdone);
768 seq_printf(m, " seqno: 0x%08x\n", error->bcs_seqno);
769 seq_printf(m, "Video (BSD) command stream:\n");
770 seq_printf(m, " ACTHD: 0x%08x\n", error->vcs_acthd);
771 seq_printf(m, " IPEIR: 0x%08x\n", error->vcs_ipeir);
772 seq_printf(m, " IPEHR: 0x%08x\n", error->vcs_ipehr);
773 seq_printf(m, " INSTDONE: 0x%08x\n", error->vcs_instdone);
774 seq_printf(m, " seqno: 0x%08x\n", error->vcs_seqno);
775 }
776 seq_printf(m, "Render command stream:\n");
777 seq_printf(m, " ACTHD: 0x%08x\n", error->acthd);
778 seq_printf(m, " IPEIR: 0x%08x\n", error->ipeir);
779 seq_printf(m, " IPEHR: 0x%08x\n", error->ipehr);
780 seq_printf(m, " INSTDONE: 0x%08x\n", error->instdone);
781 if (INTEL_INFO(dev)->gen >= 4) {
782 seq_printf(m, " INSTDONE1: 0x%08x\n", error->instdone1);
783 seq_printf(m, " INSTPS: 0x%08x\n", error->instps);
784 }
785 seq_printf(m, " INSTPM: 0x%08x\n", error->instpm);
786 seq_printf(m, " seqno: 0x%08x\n", error->seqno);
787
788 for (i = 0; i < dev_priv->num_fence_regs; i++)
789 seq_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
790
791 if (error->active_bo)
792 print_error_buffers(m, "Active",
793 error->active_bo,
794 error->active_bo_count);
795
796 if (error->pinned_bo)
797 print_error_buffers(m, "Pinned",
798 error->pinned_bo,
799 error->pinned_bo_count);
800
801 for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
802 if (error->batchbuffer[i]) {
803 struct drm_i915_error_object *obj = error->batchbuffer[i];
804
805 seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
806 dev_priv->ring[i].name,
807 obj->gtt_offset);
808 offset = 0;
809 for (page = 0; page < obj->page_count; page++) {
810 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
811 seq_printf(m, "%08x : %08x\n", offset, obj->pages[page][elt]);
812 offset += 4;
813 }
814 }
815 }
816 }
817
818 for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
819 if (error->ringbuffer[i]) {
820 struct drm_i915_error_object *obj = error->ringbuffer[i];
821 seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
822 dev_priv->ring[i].name,
823 obj->gtt_offset);
824 offset = 0;
825 for (page = 0; page < obj->page_count; page++) {
826 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
827 seq_printf(m, "%08x : %08x\n",
828 offset,
829 obj->pages[page][elt]);
830 offset += 4;
831 }
832 }
833 }
834 }
835
836 if (error->overlay)
837 intel_overlay_print_error_state(m, error->overlay);
838
839 if (error->display)
840 intel_display_print_error_state(m, dev, error->display);
841
842 out:
843 spin_unlock_irqrestore(&dev_priv->error_lock, flags);
844
845 return 0;
846 }
847
848 static int i915_rstdby_delays(struct seq_file *m, void *unused)
849 {
850 struct drm_info_node *node = (struct drm_info_node *) m->private;
851 struct drm_device *dev = node->minor->dev;
852 drm_i915_private_t *dev_priv = dev->dev_private;
853 u16 crstanddelay;
854 int ret;
855
856 ret = mutex_lock_interruptible(&dev->struct_mutex);
857 if (ret)
858 return ret;
859
860 crstanddelay = I915_READ16(CRSTANDVID);
861
862 mutex_unlock(&dev->struct_mutex);
863
864 seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
865
866 return 0;
867 }
868
869 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
870 {
871 struct drm_info_node *node = (struct drm_info_node *) m->private;
872 struct drm_device *dev = node->minor->dev;
873 drm_i915_private_t *dev_priv = dev->dev_private;
874 int ret;
875
876 if (IS_GEN5(dev)) {
877 u16 rgvswctl = I915_READ16(MEMSWCTL);
878 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
879
880 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
881 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
882 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
883 MEMSTAT_VID_SHIFT);
884 seq_printf(m, "Current P-state: %d\n",
885 (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
886 } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
887 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
888 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
889 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
890 u32 rpstat;
891 u32 rpupei, rpcurup, rpprevup;
892 u32 rpdownei, rpcurdown, rpprevdown;
893 int max_freq;
894
895 /* RPSTAT1 is in the GT power well */
896 ret = mutex_lock_interruptible(&dev->struct_mutex);
897 if (ret)
898 return ret;
899
900 gen6_gt_force_wake_get(dev_priv);
901
902 rpstat = I915_READ(GEN6_RPSTAT1);
903 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
904 rpcurup = I915_READ(GEN6_RP_CUR_UP);
905 rpprevup = I915_READ(GEN6_RP_PREV_UP);
906 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
907 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
908 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
909
910 gen6_gt_force_wake_put(dev_priv);
911 mutex_unlock(&dev->struct_mutex);
912
913 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
914 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
915 seq_printf(m, "Render p-state ratio: %d\n",
916 (gt_perf_status & 0xff00) >> 8);
917 seq_printf(m, "Render p-state VID: %d\n",
918 gt_perf_status & 0xff);
919 seq_printf(m, "Render p-state limit: %d\n",
920 rp_state_limits & 0xff);
921 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
922 GEN6_CAGF_SHIFT) * 50);
923 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
924 GEN6_CURICONT_MASK);
925 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
926 GEN6_CURBSYTAVG_MASK);
927 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
928 GEN6_CURBSYTAVG_MASK);
929 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
930 GEN6_CURIAVG_MASK);
931 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
932 GEN6_CURBSYTAVG_MASK);
933 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
934 GEN6_CURBSYTAVG_MASK);
935
936 max_freq = (rp_state_cap & 0xff0000) >> 16;
937 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
938 max_freq * 50);
939
940 max_freq = (rp_state_cap & 0xff00) >> 8;
941 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
942 max_freq * 50);
943
944 max_freq = rp_state_cap & 0xff;
945 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
946 max_freq * 50);
947 } else {
948 seq_printf(m, "no P-state info available\n");
949 }
950
951 return 0;
952 }
953
954 static int i915_delayfreq_table(struct seq_file *m, void *unused)
955 {
956 struct drm_info_node *node = (struct drm_info_node *) m->private;
957 struct drm_device *dev = node->minor->dev;
958 drm_i915_private_t *dev_priv = dev->dev_private;
959 u32 delayfreq;
960 int ret, i;
961
962 ret = mutex_lock_interruptible(&dev->struct_mutex);
963 if (ret)
964 return ret;
965
966 for (i = 0; i < 16; i++) {
967 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
968 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
969 (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
970 }
971
972 mutex_unlock(&dev->struct_mutex);
973
974 return 0;
975 }
976
977 static inline int MAP_TO_MV(int map)
978 {
979 return 1250 - (map * 25);
980 }
981
982 static int i915_inttoext_table(struct seq_file *m, void *unused)
983 {
984 struct drm_info_node *node = (struct drm_info_node *) m->private;
985 struct drm_device *dev = node->minor->dev;
986 drm_i915_private_t *dev_priv = dev->dev_private;
987 u32 inttoext;
988 int ret, i;
989
990 ret = mutex_lock_interruptible(&dev->struct_mutex);
991 if (ret)
992 return ret;
993
994 for (i = 1; i <= 32; i++) {
995 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
996 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
997 }
998
999 mutex_unlock(&dev->struct_mutex);
1000
1001 return 0;
1002 }
1003
1004 static int ironlake_drpc_info(struct seq_file *m)
1005 {
1006 struct drm_info_node *node = (struct drm_info_node *) m->private;
1007 struct drm_device *dev = node->minor->dev;
1008 drm_i915_private_t *dev_priv = dev->dev_private;
1009 u32 rgvmodectl, rstdbyctl;
1010 u16 crstandvid;
1011 int ret;
1012
1013 ret = mutex_lock_interruptible(&dev->struct_mutex);
1014 if (ret)
1015 return ret;
1016
1017 rgvmodectl = I915_READ(MEMMODECTL);
1018 rstdbyctl = I915_READ(RSTDBYCTL);
1019 crstandvid = I915_READ16(CRSTANDVID);
1020
1021 mutex_unlock(&dev->struct_mutex);
1022
1023 seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1024 "yes" : "no");
1025 seq_printf(m, "Boost freq: %d\n",
1026 (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1027 MEMMODE_BOOST_FREQ_SHIFT);
1028 seq_printf(m, "HW control enabled: %s\n",
1029 rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1030 seq_printf(m, "SW control enabled: %s\n",
1031 rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1032 seq_printf(m, "Gated voltage change: %s\n",
1033 rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1034 seq_printf(m, "Starting frequency: P%d\n",
1035 (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1036 seq_printf(m, "Max P-state: P%d\n",
1037 (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1038 seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1039 seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1040 seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1041 seq_printf(m, "Render standby enabled: %s\n",
1042 (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1043 seq_printf(m, "Current RS state: ");
1044 switch (rstdbyctl & RSX_STATUS_MASK) {
1045 case RSX_STATUS_ON:
1046 seq_printf(m, "on\n");
1047 break;
1048 case RSX_STATUS_RC1:
1049 seq_printf(m, "RC1\n");
1050 break;
1051 case RSX_STATUS_RC1E:
1052 seq_printf(m, "RC1E\n");
1053 break;
1054 case RSX_STATUS_RS1:
1055 seq_printf(m, "RS1\n");
1056 break;
1057 case RSX_STATUS_RS2:
1058 seq_printf(m, "RS2 (RC6)\n");
1059 break;
1060 case RSX_STATUS_RS3:
1061 seq_printf(m, "RC3 (RC6+)\n");
1062 break;
1063 default:
1064 seq_printf(m, "unknown\n");
1065 break;
1066 }
1067
1068 return 0;
1069 }
1070
1071 static int gen6_drpc_info(struct seq_file *m)
1072 {
1073
1074 struct drm_info_node *node = (struct drm_info_node *) m->private;
1075 struct drm_device *dev = node->minor->dev;
1076 struct drm_i915_private *dev_priv = dev->dev_private;
1077 u32 rpmodectl1, gt_core_status, rcctl1;
1078 unsigned forcewake_count;
1079 int count=0, ret;
1080
1081
1082 ret = mutex_lock_interruptible(&dev->struct_mutex);
1083 if (ret)
1084 return ret;
1085
1086 spin_lock_irq(&dev_priv->gt_lock);
1087 forcewake_count = dev_priv->forcewake_count;
1088 spin_unlock_irq(&dev_priv->gt_lock);
1089
1090 if (forcewake_count) {
1091 seq_printf(m, "RC information inaccurate because somebody "
1092 "holds a forcewake reference \n");
1093 } else {
1094 /* NB: we cannot use forcewake, else we read the wrong values */
1095 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1096 udelay(10);
1097 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1098 }
1099
1100 gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1101 trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1102
1103 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1104 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1105 mutex_unlock(&dev->struct_mutex);
1106
1107 seq_printf(m, "Video Turbo Mode: %s\n",
1108 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1109 seq_printf(m, "HW control enabled: %s\n",
1110 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1111 seq_printf(m, "SW control enabled: %s\n",
1112 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1113 GEN6_RP_MEDIA_SW_MODE));
1114 seq_printf(m, "RC1e Enabled: %s\n",
1115 yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1116 seq_printf(m, "RC6 Enabled: %s\n",
1117 yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1118 seq_printf(m, "Deep RC6 Enabled: %s\n",
1119 yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1120 seq_printf(m, "Deepest RC6 Enabled: %s\n",
1121 yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1122 seq_printf(m, "Current RC state: ");
1123 switch (gt_core_status & GEN6_RCn_MASK) {
1124 case GEN6_RC0:
1125 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1126 seq_printf(m, "Core Power Down\n");
1127 else
1128 seq_printf(m, "on\n");
1129 break;
1130 case GEN6_RC3:
1131 seq_printf(m, "RC3\n");
1132 break;
1133 case GEN6_RC6:
1134 seq_printf(m, "RC6\n");
1135 break;
1136 case GEN6_RC7:
1137 seq_printf(m, "RC7\n");
1138 break;
1139 default:
1140 seq_printf(m, "Unknown\n");
1141 break;
1142 }
1143
1144 seq_printf(m, "Core Power Down: %s\n",
1145 yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1146 return 0;
1147 }
1148
1149 static int i915_drpc_info(struct seq_file *m, void *unused)
1150 {
1151 struct drm_info_node *node = (struct drm_info_node *) m->private;
1152 struct drm_device *dev = node->minor->dev;
1153
1154 if (IS_GEN6(dev) || IS_GEN7(dev))
1155 return gen6_drpc_info(m);
1156 else
1157 return ironlake_drpc_info(m);
1158 }
1159
1160 static int i915_fbc_status(struct seq_file *m, void *unused)
1161 {
1162 struct drm_info_node *node = (struct drm_info_node *) m->private;
1163 struct drm_device *dev = node->minor->dev;
1164 drm_i915_private_t *dev_priv = dev->dev_private;
1165
1166 if (!I915_HAS_FBC(dev)) {
1167 seq_printf(m, "FBC unsupported on this chipset\n");
1168 return 0;
1169 }
1170
1171 if (intel_fbc_enabled(dev)) {
1172 seq_printf(m, "FBC enabled\n");
1173 } else {
1174 seq_printf(m, "FBC disabled: ");
1175 switch (dev_priv->no_fbc_reason) {
1176 case FBC_NO_OUTPUT:
1177 seq_printf(m, "no outputs");
1178 break;
1179 case FBC_STOLEN_TOO_SMALL:
1180 seq_printf(m, "not enough stolen memory");
1181 break;
1182 case FBC_UNSUPPORTED_MODE:
1183 seq_printf(m, "mode not supported");
1184 break;
1185 case FBC_MODE_TOO_LARGE:
1186 seq_printf(m, "mode too large");
1187 break;
1188 case FBC_BAD_PLANE:
1189 seq_printf(m, "FBC unsupported on plane");
1190 break;
1191 case FBC_NOT_TILED:
1192 seq_printf(m, "scanout buffer not tiled");
1193 break;
1194 case FBC_MULTIPLE_PIPES:
1195 seq_printf(m, "multiple pipes are enabled");
1196 break;
1197 case FBC_MODULE_PARAM:
1198 seq_printf(m, "disabled per module param (default off)");
1199 break;
1200 default:
1201 seq_printf(m, "unknown reason");
1202 }
1203 seq_printf(m, "\n");
1204 }
1205 return 0;
1206 }
1207
1208 static int i915_sr_status(struct seq_file *m, void *unused)
1209 {
1210 struct drm_info_node *node = (struct drm_info_node *) m->private;
1211 struct drm_device *dev = node->minor->dev;
1212 drm_i915_private_t *dev_priv = dev->dev_private;
1213 bool sr_enabled = false;
1214
1215 if (HAS_PCH_SPLIT(dev))
1216 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1217 else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1218 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1219 else if (IS_I915GM(dev))
1220 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1221 else if (IS_PINEVIEW(dev))
1222 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1223
1224 seq_printf(m, "self-refresh: %s\n",
1225 sr_enabled ? "enabled" : "disabled");
1226
1227 return 0;
1228 }
1229
1230 static int i915_emon_status(struct seq_file *m, void *unused)
1231 {
1232 struct drm_info_node *node = (struct drm_info_node *) m->private;
1233 struct drm_device *dev = node->minor->dev;
1234 drm_i915_private_t *dev_priv = dev->dev_private;
1235 unsigned long temp, chipset, gfx;
1236 int ret;
1237
1238 ret = mutex_lock_interruptible(&dev->struct_mutex);
1239 if (ret)
1240 return ret;
1241
1242 temp = i915_mch_val(dev_priv);
1243 chipset = i915_chipset_val(dev_priv);
1244 gfx = i915_gfx_val(dev_priv);
1245 mutex_unlock(&dev->struct_mutex);
1246
1247 seq_printf(m, "GMCH temp: %ld\n", temp);
1248 seq_printf(m, "Chipset power: %ld\n", chipset);
1249 seq_printf(m, "GFX power: %ld\n", gfx);
1250 seq_printf(m, "Total power: %ld\n", chipset + gfx);
1251
1252 return 0;
1253 }
1254
1255 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1256 {
1257 struct drm_info_node *node = (struct drm_info_node *) m->private;
1258 struct drm_device *dev = node->minor->dev;
1259 drm_i915_private_t *dev_priv = dev->dev_private;
1260 int ret;
1261 int gpu_freq, ia_freq;
1262
1263 if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1264 seq_printf(m, "unsupported on this chipset\n");
1265 return 0;
1266 }
1267
1268 ret = mutex_lock_interruptible(&dev->struct_mutex);
1269 if (ret)
1270 return ret;
1271
1272 seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1273
1274 for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1275 gpu_freq++) {
1276 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1277 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1278 GEN6_PCODE_READ_MIN_FREQ_TABLE);
1279 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1280 GEN6_PCODE_READY) == 0, 10)) {
1281 DRM_ERROR("pcode read of freq table timed out\n");
1282 continue;
1283 }
1284 ia_freq = I915_READ(GEN6_PCODE_DATA);
1285 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1286 }
1287
1288 mutex_unlock(&dev->struct_mutex);
1289
1290 return 0;
1291 }
1292
1293 static int i915_gfxec(struct seq_file *m, void *unused)
1294 {
1295 struct drm_info_node *node = (struct drm_info_node *) m->private;
1296 struct drm_device *dev = node->minor->dev;
1297 drm_i915_private_t *dev_priv = dev->dev_private;
1298 int ret;
1299
1300 ret = mutex_lock_interruptible(&dev->struct_mutex);
1301 if (ret)
1302 return ret;
1303
1304 seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1305
1306 mutex_unlock(&dev->struct_mutex);
1307
1308 return 0;
1309 }
1310
1311 static int i915_opregion(struct seq_file *m, void *unused)
1312 {
1313 struct drm_info_node *node = (struct drm_info_node *) m->private;
1314 struct drm_device *dev = node->minor->dev;
1315 drm_i915_private_t *dev_priv = dev->dev_private;
1316 struct intel_opregion *opregion = &dev_priv->opregion;
1317 int ret;
1318
1319 ret = mutex_lock_interruptible(&dev->struct_mutex);
1320 if (ret)
1321 return ret;
1322
1323 if (opregion->header)
1324 seq_write(m, opregion->header, OPREGION_SIZE);
1325
1326 mutex_unlock(&dev->struct_mutex);
1327
1328 return 0;
1329 }
1330
1331 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1332 {
1333 struct drm_info_node *node = (struct drm_info_node *) m->private;
1334 struct drm_device *dev = node->minor->dev;
1335 drm_i915_private_t *dev_priv = dev->dev_private;
1336 struct intel_fbdev *ifbdev;
1337 struct intel_framebuffer *fb;
1338 int ret;
1339
1340 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1341 if (ret)
1342 return ret;
1343
1344 ifbdev = dev_priv->fbdev;
1345 fb = to_intel_framebuffer(ifbdev->helper.fb);
1346
1347 seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1348 fb->base.width,
1349 fb->base.height,
1350 fb->base.depth,
1351 fb->base.bits_per_pixel);
1352 describe_obj(m, fb->obj);
1353 seq_printf(m, "\n");
1354
1355 list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1356 if (&fb->base == ifbdev->helper.fb)
1357 continue;
1358
1359 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1360 fb->base.width,
1361 fb->base.height,
1362 fb->base.depth,
1363 fb->base.bits_per_pixel);
1364 describe_obj(m, fb->obj);
1365 seq_printf(m, "\n");
1366 }
1367
1368 mutex_unlock(&dev->mode_config.mutex);
1369
1370 return 0;
1371 }
1372
1373 static int i915_context_status(struct seq_file *m, void *unused)
1374 {
1375 struct drm_info_node *node = (struct drm_info_node *) m->private;
1376 struct drm_device *dev = node->minor->dev;
1377 drm_i915_private_t *dev_priv = dev->dev_private;
1378 int ret;
1379
1380 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1381 if (ret)
1382 return ret;
1383
1384 if (dev_priv->pwrctx) {
1385 seq_printf(m, "power context ");
1386 describe_obj(m, dev_priv->pwrctx);
1387 seq_printf(m, "\n");
1388 }
1389
1390 if (dev_priv->renderctx) {
1391 seq_printf(m, "render context ");
1392 describe_obj(m, dev_priv->renderctx);
1393 seq_printf(m, "\n");
1394 }
1395
1396 mutex_unlock(&dev->mode_config.mutex);
1397
1398 return 0;
1399 }
1400
1401 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1402 {
1403 struct drm_info_node *node = (struct drm_info_node *) m->private;
1404 struct drm_device *dev = node->minor->dev;
1405 struct drm_i915_private *dev_priv = dev->dev_private;
1406 unsigned forcewake_count;
1407
1408 spin_lock_irq(&dev_priv->gt_lock);
1409 forcewake_count = dev_priv->forcewake_count;
1410 spin_unlock_irq(&dev_priv->gt_lock);
1411
1412 seq_printf(m, "forcewake count = %u\n", forcewake_count);
1413
1414 return 0;
1415 }
1416
1417 static int
1418 i915_wedged_open(struct inode *inode,
1419 struct file *filp)
1420 {
1421 filp->private_data = inode->i_private;
1422 return 0;
1423 }
1424
1425 static ssize_t
1426 i915_wedged_read(struct file *filp,
1427 char __user *ubuf,
1428 size_t max,
1429 loff_t *ppos)
1430 {
1431 struct drm_device *dev = filp->private_data;
1432 drm_i915_private_t *dev_priv = dev->dev_private;
1433 char buf[80];
1434 int len;
1435
1436 len = snprintf(buf, sizeof(buf),
1437 "wedged : %d\n",
1438 atomic_read(&dev_priv->mm.wedged));
1439
1440 if (len > sizeof(buf))
1441 len = sizeof(buf);
1442
1443 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1444 }
1445
1446 static ssize_t
1447 i915_wedged_write(struct file *filp,
1448 const char __user *ubuf,
1449 size_t cnt,
1450 loff_t *ppos)
1451 {
1452 struct drm_device *dev = filp->private_data;
1453 char buf[20];
1454 int val = 1;
1455
1456 if (cnt > 0) {
1457 if (cnt > sizeof(buf) - 1)
1458 return -EINVAL;
1459
1460 if (copy_from_user(buf, ubuf, cnt))
1461 return -EFAULT;
1462 buf[cnt] = 0;
1463
1464 val = simple_strtoul(buf, NULL, 0);
1465 }
1466
1467 DRM_INFO("Manually setting wedged to %d\n", val);
1468 i915_handle_error(dev, val);
1469
1470 return cnt;
1471 }
1472
1473 static const struct file_operations i915_wedged_fops = {
1474 .owner = THIS_MODULE,
1475 .open = i915_wedged_open,
1476 .read = i915_wedged_read,
1477 .write = i915_wedged_write,
1478 .llseek = default_llseek,
1479 };
1480
1481 static int
1482 i915_max_freq_open(struct inode *inode,
1483 struct file *filp)
1484 {
1485 filp->private_data = inode->i_private;
1486 return 0;
1487 }
1488
1489 static ssize_t
1490 i915_max_freq_read(struct file *filp,
1491 char __user *ubuf,
1492 size_t max,
1493 loff_t *ppos)
1494 {
1495 struct drm_device *dev = filp->private_data;
1496 drm_i915_private_t *dev_priv = dev->dev_private;
1497 char buf[80];
1498 int len;
1499
1500 len = snprintf(buf, sizeof(buf),
1501 "max freq: %d\n", dev_priv->max_delay * 50);
1502
1503 if (len > sizeof(buf))
1504 len = sizeof(buf);
1505
1506 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1507 }
1508
1509 static ssize_t
1510 i915_max_freq_write(struct file *filp,
1511 const char __user *ubuf,
1512 size_t cnt,
1513 loff_t *ppos)
1514 {
1515 struct drm_device *dev = filp->private_data;
1516 struct drm_i915_private *dev_priv = dev->dev_private;
1517 char buf[20];
1518 int val = 1;
1519
1520 if (cnt > 0) {
1521 if (cnt > sizeof(buf) - 1)
1522 return -EINVAL;
1523
1524 if (copy_from_user(buf, ubuf, cnt))
1525 return -EFAULT;
1526 buf[cnt] = 0;
1527
1528 val = simple_strtoul(buf, NULL, 0);
1529 }
1530
1531 DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1532
1533 /*
1534 * Turbo will still be enabled, but won't go above the set value.
1535 */
1536 dev_priv->max_delay = val / 50;
1537
1538 gen6_set_rps(dev, val / 50);
1539
1540 return cnt;
1541 }
1542
1543 static const struct file_operations i915_max_freq_fops = {
1544 .owner = THIS_MODULE,
1545 .open = i915_max_freq_open,
1546 .read = i915_max_freq_read,
1547 .write = i915_max_freq_write,
1548 .llseek = default_llseek,
1549 };
1550
1551 static int
1552 i915_cache_sharing_open(struct inode *inode,
1553 struct file *filp)
1554 {
1555 filp->private_data = inode->i_private;
1556 return 0;
1557 }
1558
1559 static ssize_t
1560 i915_cache_sharing_read(struct file *filp,
1561 char __user *ubuf,
1562 size_t max,
1563 loff_t *ppos)
1564 {
1565 struct drm_device *dev = filp->private_data;
1566 drm_i915_private_t *dev_priv = dev->dev_private;
1567 char buf[80];
1568 u32 snpcr;
1569 int len;
1570
1571 mutex_lock(&dev_priv->dev->struct_mutex);
1572 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1573 mutex_unlock(&dev_priv->dev->struct_mutex);
1574
1575 len = snprintf(buf, sizeof(buf),
1576 "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1577 GEN6_MBC_SNPCR_SHIFT);
1578
1579 if (len > sizeof(buf))
1580 len = sizeof(buf);
1581
1582 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1583 }
1584
1585 static ssize_t
1586 i915_cache_sharing_write(struct file *filp,
1587 const char __user *ubuf,
1588 size_t cnt,
1589 loff_t *ppos)
1590 {
1591 struct drm_device *dev = filp->private_data;
1592 struct drm_i915_private *dev_priv = dev->dev_private;
1593 char buf[20];
1594 u32 snpcr;
1595 int val = 1;
1596
1597 if (cnt > 0) {
1598 if (cnt > sizeof(buf) - 1)
1599 return -EINVAL;
1600
1601 if (copy_from_user(buf, ubuf, cnt))
1602 return -EFAULT;
1603 buf[cnt] = 0;
1604
1605 val = simple_strtoul(buf, NULL, 0);
1606 }
1607
1608 if (val < 0 || val > 3)
1609 return -EINVAL;
1610
1611 DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1612
1613 /* Update the cache sharing policy here as well */
1614 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1615 snpcr &= ~GEN6_MBC_SNPCR_MASK;
1616 snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1617 I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1618
1619 return cnt;
1620 }
1621
1622 static const struct file_operations i915_cache_sharing_fops = {
1623 .owner = THIS_MODULE,
1624 .open = i915_cache_sharing_open,
1625 .read = i915_cache_sharing_read,
1626 .write = i915_cache_sharing_write,
1627 .llseek = default_llseek,
1628 };
1629
1630 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1631 * allocated we need to hook into the minor for release. */
1632 static int
1633 drm_add_fake_info_node(struct drm_minor *minor,
1634 struct dentry *ent,
1635 const void *key)
1636 {
1637 struct drm_info_node *node;
1638
1639 node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1640 if (node == NULL) {
1641 debugfs_remove(ent);
1642 return -ENOMEM;
1643 }
1644
1645 node->minor = minor;
1646 node->dent = ent;
1647 node->info_ent = (void *) key;
1648
1649 mutex_lock(&minor->debugfs_lock);
1650 list_add(&node->list, &minor->debugfs_list);
1651 mutex_unlock(&minor->debugfs_lock);
1652
1653 return 0;
1654 }
1655
1656 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1657 {
1658 struct drm_device *dev = minor->dev;
1659 struct dentry *ent;
1660
1661 ent = debugfs_create_file("i915_wedged",
1662 S_IRUGO | S_IWUSR,
1663 root, dev,
1664 &i915_wedged_fops);
1665 if (IS_ERR(ent))
1666 return PTR_ERR(ent);
1667
1668 return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1669 }
1670
1671 static int i915_forcewake_open(struct inode *inode, struct file *file)
1672 {
1673 struct drm_device *dev = inode->i_private;
1674 struct drm_i915_private *dev_priv = dev->dev_private;
1675 int ret;
1676
1677 if (INTEL_INFO(dev)->gen < 6)
1678 return 0;
1679
1680 ret = mutex_lock_interruptible(&dev->struct_mutex);
1681 if (ret)
1682 return ret;
1683 gen6_gt_force_wake_get(dev_priv);
1684 mutex_unlock(&dev->struct_mutex);
1685
1686 return 0;
1687 }
1688
1689 int i915_forcewake_release(struct inode *inode, struct file *file)
1690 {
1691 struct drm_device *dev = inode->i_private;
1692 struct drm_i915_private *dev_priv = dev->dev_private;
1693
1694 if (INTEL_INFO(dev)->gen < 6)
1695 return 0;
1696
1697 /*
1698 * It's bad that we can potentially hang userspace if struct_mutex gets
1699 * forever stuck. However, if we cannot acquire this lock it means that
1700 * almost certainly the driver has hung, is not unload-able. Therefore
1701 * hanging here is probably a minor inconvenience not to be seen my
1702 * almost every user.
1703 */
1704 mutex_lock(&dev->struct_mutex);
1705 gen6_gt_force_wake_put(dev_priv);
1706 mutex_unlock(&dev->struct_mutex);
1707
1708 return 0;
1709 }
1710
1711 static const struct file_operations i915_forcewake_fops = {
1712 .owner = THIS_MODULE,
1713 .open = i915_forcewake_open,
1714 .release = i915_forcewake_release,
1715 };
1716
1717 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1718 {
1719 struct drm_device *dev = minor->dev;
1720 struct dentry *ent;
1721
1722 ent = debugfs_create_file("i915_forcewake_user",
1723 S_IRUSR,
1724 root, dev,
1725 &i915_forcewake_fops);
1726 if (IS_ERR(ent))
1727 return PTR_ERR(ent);
1728
1729 return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1730 }
1731
1732 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1733 {
1734 struct drm_device *dev = minor->dev;
1735 struct dentry *ent;
1736
1737 ent = debugfs_create_file("i915_max_freq",
1738 S_IRUGO | S_IWUSR,
1739 root, dev,
1740 &i915_max_freq_fops);
1741 if (IS_ERR(ent))
1742 return PTR_ERR(ent);
1743
1744 return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1745 }
1746
1747 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1748 {
1749 struct drm_device *dev = minor->dev;
1750 struct dentry *ent;
1751
1752 ent = debugfs_create_file("i915_cache_sharing",
1753 S_IRUGO | S_IWUSR,
1754 root, dev,
1755 &i915_cache_sharing_fops);
1756 if (IS_ERR(ent))
1757 return PTR_ERR(ent);
1758
1759 return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1760 }
1761
1762 static struct drm_info_list i915_debugfs_list[] = {
1763 {"i915_capabilities", i915_capabilities, 0},
1764 {"i915_gem_objects", i915_gem_object_info, 0},
1765 {"i915_gem_gtt", i915_gem_gtt_info, 0},
1766 {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1767 {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1768 {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1769 {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1770 {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1771 {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1772 {"i915_gem_request", i915_gem_request_info, 0},
1773 {"i915_gem_seqno", i915_gem_seqno_info, 0},
1774 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1775 {"i915_gem_interrupt", i915_interrupt_info, 0},
1776 {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1777 {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1778 {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1779 {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1780 {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1781 {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1782 {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1783 {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1784 {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1785 {"i915_batchbuffers", i915_batchbuffer_info, 0},
1786 {"i915_error_state", i915_error_state, 0},
1787 {"i915_rstdby_delays", i915_rstdby_delays, 0},
1788 {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1789 {"i915_delayfreq_table", i915_delayfreq_table, 0},
1790 {"i915_inttoext_table", i915_inttoext_table, 0},
1791 {"i915_drpc_info", i915_drpc_info, 0},
1792 {"i915_emon_status", i915_emon_status, 0},
1793 {"i915_ring_freq_table", i915_ring_freq_table, 0},
1794 {"i915_gfxec", i915_gfxec, 0},
1795 {"i915_fbc_status", i915_fbc_status, 0},
1796 {"i915_sr_status", i915_sr_status, 0},
1797 {"i915_opregion", i915_opregion, 0},
1798 {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1799 {"i915_context_status", i915_context_status, 0},
1800 {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1801 };
1802 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1803
1804 int i915_debugfs_init(struct drm_minor *minor)
1805 {
1806 int ret;
1807
1808 ret = i915_wedged_create(minor->debugfs_root, minor);
1809 if (ret)
1810 return ret;
1811
1812 ret = i915_forcewake_create(minor->debugfs_root, minor);
1813 if (ret)
1814 return ret;
1815 ret = i915_max_freq_create(minor->debugfs_root, minor);
1816 if (ret)
1817 return ret;
1818 ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1819 if (ret)
1820 return ret;
1821
1822 return drm_debugfs_create_files(i915_debugfs_list,
1823 I915_DEBUGFS_ENTRIES,
1824 minor->debugfs_root, minor);
1825 }
1826
1827 void i915_debugfs_cleanup(struct drm_minor *minor)
1828 {
1829 drm_debugfs_remove_files(i915_debugfs_list,
1830 I915_DEBUGFS_ENTRIES, minor);
1831 drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1832 1, minor);
1833 drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1834 1, minor);
1835 drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1836 1, minor);
1837 drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1838 1, minor);
1839 }
1840
1841 #endif /* CONFIG_DEBUG_FS */