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drm/i915: sseu: Move sseu_dev_status to i915_drv.h
[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_debugfs.c
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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/circ_buf.h>
31#include <linux/ctype.h>
32#include <linux/debugfs.h>
33#include <linux/slab.h>
34#include <linux/export.h>
35#include <linux/list_sort.h>
36#include <asm/msr-index.h>
37#include <drm/drmP.h>
38#include "intel_drv.h"
39#include "intel_ringbuffer.h"
40#include <drm/i915_drm.h>
41#include "i915_drv.h"
42
43static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
44{
45 return to_i915(node->minor->dev);
46}
47
48/* As the drm_debugfs_init() routines are called before dev->dev_private is
49 * allocated we need to hook into the minor for release. */
50static int
51drm_add_fake_info_node(struct drm_minor *minor,
52 struct dentry *ent,
53 const void *key)
54{
55 struct drm_info_node *node;
56
57 node = kmalloc(sizeof(*node), GFP_KERNEL);
58 if (node == NULL) {
59 debugfs_remove(ent);
60 return -ENOMEM;
61 }
62
63 node->minor = minor;
64 node->dent = ent;
65 node->info_ent = (void *)key;
66
67 mutex_lock(&minor->debugfs_lock);
68 list_add(&node->list, &minor->debugfs_list);
69 mutex_unlock(&minor->debugfs_lock);
70
71 return 0;
72}
73
74static int i915_capabilities(struct seq_file *m, void *data)
75{
76 struct drm_i915_private *dev_priv = node_to_i915(m->private);
77 const struct intel_device_info *info = INTEL_INFO(dev_priv);
78
79 seq_printf(m, "gen: %d\n", INTEL_GEN(dev_priv));
80 seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev_priv));
81#define PRINT_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
82#define SEP_SEMICOLON ;
83 DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_SEMICOLON);
84#undef PRINT_FLAG
85#undef SEP_SEMICOLON
86
87 return 0;
88}
89
90static char get_active_flag(struct drm_i915_gem_object *obj)
91{
92 return i915_gem_object_is_active(obj) ? '*' : ' ';
93}
94
95static char get_pin_flag(struct drm_i915_gem_object *obj)
96{
97 return obj->pin_display ? 'p' : ' ';
98}
99
100static char get_tiling_flag(struct drm_i915_gem_object *obj)
101{
102 switch (i915_gem_object_get_tiling(obj)) {
103 default:
104 case I915_TILING_NONE: return ' ';
105 case I915_TILING_X: return 'X';
106 case I915_TILING_Y: return 'Y';
107 }
108}
109
110static char get_global_flag(struct drm_i915_gem_object *obj)
111{
112 return i915_gem_object_to_ggtt(obj, NULL) ? 'g' : ' ';
113}
114
115static char get_pin_mapped_flag(struct drm_i915_gem_object *obj)
116{
117 return obj->mapping ? 'M' : ' ';
118}
119
120static u64 i915_gem_obj_total_ggtt_size(struct drm_i915_gem_object *obj)
121{
122 u64 size = 0;
123 struct i915_vma *vma;
124
125 list_for_each_entry(vma, &obj->vma_list, obj_link) {
126 if (i915_vma_is_ggtt(vma) && drm_mm_node_allocated(&vma->node))
127 size += vma->node.size;
128 }
129
130 return size;
131}
132
133static void
134describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
135{
136 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
137 struct intel_engine_cs *engine;
138 struct i915_vma *vma;
139 unsigned int frontbuffer_bits;
140 int pin_count = 0;
141 enum intel_engine_id id;
142
143 lockdep_assert_held(&obj->base.dev->struct_mutex);
144
145 seq_printf(m, "%pK: %c%c%c%c%c %8zdKiB %02x %02x [ ",
146 &obj->base,
147 get_active_flag(obj),
148 get_pin_flag(obj),
149 get_tiling_flag(obj),
150 get_global_flag(obj),
151 get_pin_mapped_flag(obj),
152 obj->base.size / 1024,
153 obj->base.read_domains,
154 obj->base.write_domain);
155 for_each_engine_id(engine, dev_priv, id)
156 seq_printf(m, "%x ",
157 i915_gem_active_get_seqno(&obj->last_read[id],
158 &obj->base.dev->struct_mutex));
159 seq_printf(m, "] %x %s%s%s",
160 i915_gem_active_get_seqno(&obj->last_write,
161 &obj->base.dev->struct_mutex),
162 i915_cache_level_str(dev_priv, obj->cache_level),
163 obj->dirty ? " dirty" : "",
164 obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
165 if (obj->base.name)
166 seq_printf(m, " (name: %d)", obj->base.name);
167 list_for_each_entry(vma, &obj->vma_list, obj_link) {
168 if (i915_vma_is_pinned(vma))
169 pin_count++;
170 }
171 seq_printf(m, " (pinned x %d)", pin_count);
172 if (obj->pin_display)
173 seq_printf(m, " (display)");
174 list_for_each_entry(vma, &obj->vma_list, obj_link) {
175 if (!drm_mm_node_allocated(&vma->node))
176 continue;
177
178 seq_printf(m, " (%sgtt offset: %08llx, size: %08llx",
179 i915_vma_is_ggtt(vma) ? "g" : "pp",
180 vma->node.start, vma->node.size);
181 if (i915_vma_is_ggtt(vma))
182 seq_printf(m, ", type: %u", vma->ggtt_view.type);
183 if (vma->fence)
184 seq_printf(m, " , fence: %d%s",
185 vma->fence->id,
186 i915_gem_active_isset(&vma->last_fence) ? "*" : "");
187 seq_puts(m, ")");
188 }
189 if (obj->stolen)
190 seq_printf(m, " (stolen: %08llx)", obj->stolen->start);
191 if (obj->pin_display || obj->fault_mappable) {
192 char s[3], *t = s;
193 if (obj->pin_display)
194 *t++ = 'p';
195 if (obj->fault_mappable)
196 *t++ = 'f';
197 *t = '\0';
198 seq_printf(m, " (%s mappable)", s);
199 }
200
201 engine = i915_gem_active_get_engine(&obj->last_write,
202 &dev_priv->drm.struct_mutex);
203 if (engine)
204 seq_printf(m, " (%s)", engine->name);
205
206 frontbuffer_bits = atomic_read(&obj->frontbuffer_bits);
207 if (frontbuffer_bits)
208 seq_printf(m, " (frontbuffer: 0x%03x)", frontbuffer_bits);
209}
210
211static int obj_rank_by_stolen(void *priv,
212 struct list_head *A, struct list_head *B)
213{
214 struct drm_i915_gem_object *a =
215 container_of(A, struct drm_i915_gem_object, obj_exec_link);
216 struct drm_i915_gem_object *b =
217 container_of(B, struct drm_i915_gem_object, obj_exec_link);
218
219 if (a->stolen->start < b->stolen->start)
220 return -1;
221 if (a->stolen->start > b->stolen->start)
222 return 1;
223 return 0;
224}
225
226static int i915_gem_stolen_list_info(struct seq_file *m, void *data)
227{
228 struct drm_i915_private *dev_priv = node_to_i915(m->private);
229 struct drm_device *dev = &dev_priv->drm;
230 struct drm_i915_gem_object *obj;
231 u64 total_obj_size, total_gtt_size;
232 LIST_HEAD(stolen);
233 int count, ret;
234
235 ret = mutex_lock_interruptible(&dev->struct_mutex);
236 if (ret)
237 return ret;
238
239 total_obj_size = total_gtt_size = count = 0;
240 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
241 if (obj->stolen == NULL)
242 continue;
243
244 list_add(&obj->obj_exec_link, &stolen);
245
246 total_obj_size += obj->base.size;
247 total_gtt_size += i915_gem_obj_total_ggtt_size(obj);
248 count++;
249 }
250 list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
251 if (obj->stolen == NULL)
252 continue;
253
254 list_add(&obj->obj_exec_link, &stolen);
255
256 total_obj_size += obj->base.size;
257 count++;
258 }
259 list_sort(NULL, &stolen, obj_rank_by_stolen);
260 seq_puts(m, "Stolen:\n");
261 while (!list_empty(&stolen)) {
262 obj = list_first_entry(&stolen, typeof(*obj), obj_exec_link);
263 seq_puts(m, " ");
264 describe_obj(m, obj);
265 seq_putc(m, '\n');
266 list_del_init(&obj->obj_exec_link);
267 }
268 mutex_unlock(&dev->struct_mutex);
269
270 seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n",
271 count, total_obj_size, total_gtt_size);
272 return 0;
273}
274
275struct file_stats {
276 struct drm_i915_file_private *file_priv;
277 unsigned long count;
278 u64 total, unbound;
279 u64 global, shared;
280 u64 active, inactive;
281};
282
283static int per_file_stats(int id, void *ptr, void *data)
284{
285 struct drm_i915_gem_object *obj = ptr;
286 struct file_stats *stats = data;
287 struct i915_vma *vma;
288
289 stats->count++;
290 stats->total += obj->base.size;
291 if (!obj->bind_count)
292 stats->unbound += obj->base.size;
293 if (obj->base.name || obj->base.dma_buf)
294 stats->shared += obj->base.size;
295
296 list_for_each_entry(vma, &obj->vma_list, obj_link) {
297 if (!drm_mm_node_allocated(&vma->node))
298 continue;
299
300 if (i915_vma_is_ggtt(vma)) {
301 stats->global += vma->node.size;
302 } else {
303 struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vma->vm);
304
305 if (ppgtt->base.file != stats->file_priv)
306 continue;
307 }
308
309 if (i915_vma_is_active(vma))
310 stats->active += vma->node.size;
311 else
312 stats->inactive += vma->node.size;
313 }
314
315 return 0;
316}
317
318#define print_file_stats(m, name, stats) do { \
319 if (stats.count) \
320 seq_printf(m, "%s: %lu objects, %llu bytes (%llu active, %llu inactive, %llu global, %llu shared, %llu unbound)\n", \
321 name, \
322 stats.count, \
323 stats.total, \
324 stats.active, \
325 stats.inactive, \
326 stats.global, \
327 stats.shared, \
328 stats.unbound); \
329} while (0)
330
331static void print_batch_pool_stats(struct seq_file *m,
332 struct drm_i915_private *dev_priv)
333{
334 struct drm_i915_gem_object *obj;
335 struct file_stats stats;
336 struct intel_engine_cs *engine;
337 int j;
338
339 memset(&stats, 0, sizeof(stats));
340
341 for_each_engine(engine, dev_priv) {
342 for (j = 0; j < ARRAY_SIZE(engine->batch_pool.cache_list); j++) {
343 list_for_each_entry(obj,
344 &engine->batch_pool.cache_list[j],
345 batch_pool_link)
346 per_file_stats(0, obj, &stats);
347 }
348 }
349
350 print_file_stats(m, "[k]batch pool", stats);
351}
352
353static int per_file_ctx_stats(int id, void *ptr, void *data)
354{
355 struct i915_gem_context *ctx = ptr;
356 int n;
357
358 for (n = 0; n < ARRAY_SIZE(ctx->engine); n++) {
359 if (ctx->engine[n].state)
360 per_file_stats(0, ctx->engine[n].state->obj, data);
361 if (ctx->engine[n].ring)
362 per_file_stats(0, ctx->engine[n].ring->vma->obj, data);
363 }
364
365 return 0;
366}
367
368static void print_context_stats(struct seq_file *m,
369 struct drm_i915_private *dev_priv)
370{
371 struct drm_device *dev = &dev_priv->drm;
372 struct file_stats stats;
373 struct drm_file *file;
374
375 memset(&stats, 0, sizeof(stats));
376
377 mutex_lock(&dev->struct_mutex);
378 if (dev_priv->kernel_context)
379 per_file_ctx_stats(0, dev_priv->kernel_context, &stats);
380
381 list_for_each_entry(file, &dev->filelist, lhead) {
382 struct drm_i915_file_private *fpriv = file->driver_priv;
383 idr_for_each(&fpriv->context_idr, per_file_ctx_stats, &stats);
384 }
385 mutex_unlock(&dev->struct_mutex);
386
387 print_file_stats(m, "[k]contexts", stats);
388}
389
390static int i915_gem_object_info(struct seq_file *m, void *data)
391{
392 struct drm_i915_private *dev_priv = node_to_i915(m->private);
393 struct drm_device *dev = &dev_priv->drm;
394 struct i915_ggtt *ggtt = &dev_priv->ggtt;
395 u32 count, mapped_count, purgeable_count, dpy_count;
396 u64 size, mapped_size, purgeable_size, dpy_size;
397 struct drm_i915_gem_object *obj;
398 struct drm_file *file;
399 int ret;
400
401 ret = mutex_lock_interruptible(&dev->struct_mutex);
402 if (ret)
403 return ret;
404
405 seq_printf(m, "%u objects, %zu bytes\n",
406 dev_priv->mm.object_count,
407 dev_priv->mm.object_memory);
408
409 size = count = 0;
410 mapped_size = mapped_count = 0;
411 purgeable_size = purgeable_count = 0;
412 list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
413 size += obj->base.size;
414 ++count;
415
416 if (obj->madv == I915_MADV_DONTNEED) {
417 purgeable_size += obj->base.size;
418 ++purgeable_count;
419 }
420
421 if (obj->mapping) {
422 mapped_count++;
423 mapped_size += obj->base.size;
424 }
425 }
426 seq_printf(m, "%u unbound objects, %llu bytes\n", count, size);
427
428 size = count = dpy_size = dpy_count = 0;
429 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
430 size += obj->base.size;
431 ++count;
432
433 if (obj->pin_display) {
434 dpy_size += obj->base.size;
435 ++dpy_count;
436 }
437
438 if (obj->madv == I915_MADV_DONTNEED) {
439 purgeable_size += obj->base.size;
440 ++purgeable_count;
441 }
442
443 if (obj->mapping) {
444 mapped_count++;
445 mapped_size += obj->base.size;
446 }
447 }
448 seq_printf(m, "%u bound objects, %llu bytes\n",
449 count, size);
450 seq_printf(m, "%u purgeable objects, %llu bytes\n",
451 purgeable_count, purgeable_size);
452 seq_printf(m, "%u mapped objects, %llu bytes\n",
453 mapped_count, mapped_size);
454 seq_printf(m, "%u display objects (pinned), %llu bytes\n",
455 dpy_count, dpy_size);
456
457 seq_printf(m, "%llu [%llu] gtt total\n",
458 ggtt->base.total, ggtt->mappable_end - ggtt->base.start);
459
460 seq_putc(m, '\n');
461 print_batch_pool_stats(m, dev_priv);
462 mutex_unlock(&dev->struct_mutex);
463
464 mutex_lock(&dev->filelist_mutex);
465 print_context_stats(m, dev_priv);
466 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
467 struct file_stats stats;
468 struct drm_i915_file_private *file_priv = file->driver_priv;
469 struct drm_i915_gem_request *request;
470 struct task_struct *task;
471
472 memset(&stats, 0, sizeof(stats));
473 stats.file_priv = file->driver_priv;
474 spin_lock(&file->table_lock);
475 idr_for_each(&file->object_idr, per_file_stats, &stats);
476 spin_unlock(&file->table_lock);
477 /*
478 * Although we have a valid reference on file->pid, that does
479 * not guarantee that the task_struct who called get_pid() is
480 * still alive (e.g. get_pid(current) => fork() => exit()).
481 * Therefore, we need to protect this ->comm access using RCU.
482 */
483 mutex_lock(&dev->struct_mutex);
484 request = list_first_entry_or_null(&file_priv->mm.request_list,
485 struct drm_i915_gem_request,
486 client_list);
487 rcu_read_lock();
488 task = pid_task(request && request->ctx->pid ?
489 request->ctx->pid : file->pid,
490 PIDTYPE_PID);
491 print_file_stats(m, task ? task->comm : "<unknown>", stats);
492 rcu_read_unlock();
493 mutex_unlock(&dev->struct_mutex);
494 }
495 mutex_unlock(&dev->filelist_mutex);
496
497 return 0;
498}
499
500static int i915_gem_gtt_info(struct seq_file *m, void *data)
501{
502 struct drm_info_node *node = m->private;
503 struct drm_i915_private *dev_priv = node_to_i915(node);
504 struct drm_device *dev = &dev_priv->drm;
505 bool show_pin_display_only = !!node->info_ent->data;
506 struct drm_i915_gem_object *obj;
507 u64 total_obj_size, total_gtt_size;
508 int count, ret;
509
510 ret = mutex_lock_interruptible(&dev->struct_mutex);
511 if (ret)
512 return ret;
513
514 total_obj_size = total_gtt_size = count = 0;
515 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
516 if (show_pin_display_only && !obj->pin_display)
517 continue;
518
519 seq_puts(m, " ");
520 describe_obj(m, obj);
521 seq_putc(m, '\n');
522 total_obj_size += obj->base.size;
523 total_gtt_size += i915_gem_obj_total_ggtt_size(obj);
524 count++;
525 }
526
527 mutex_unlock(&dev->struct_mutex);
528
529 seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n",
530 count, total_obj_size, total_gtt_size);
531
532 return 0;
533}
534
535static int i915_gem_pageflip_info(struct seq_file *m, void *data)
536{
537 struct drm_i915_private *dev_priv = node_to_i915(m->private);
538 struct drm_device *dev = &dev_priv->drm;
539 struct intel_crtc *crtc;
540 int ret;
541
542 ret = mutex_lock_interruptible(&dev->struct_mutex);
543 if (ret)
544 return ret;
545
546 for_each_intel_crtc(dev, crtc) {
547 const char pipe = pipe_name(crtc->pipe);
548 const char plane = plane_name(crtc->plane);
549 struct intel_flip_work *work;
550
551 spin_lock_irq(&dev->event_lock);
552 work = crtc->flip_work;
553 if (work == NULL) {
554 seq_printf(m, "No flip due on pipe %c (plane %c)\n",
555 pipe, plane);
556 } else {
557 u32 pending;
558 u32 addr;
559
560 pending = atomic_read(&work->pending);
561 if (pending) {
562 seq_printf(m, "Flip ioctl preparing on pipe %c (plane %c)\n",
563 pipe, plane);
564 } else {
565 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
566 pipe, plane);
567 }
568 if (work->flip_queued_req) {
569 struct intel_engine_cs *engine = i915_gem_request_get_engine(work->flip_queued_req);
570
571 seq_printf(m, "Flip queued on %s at seqno %x, next seqno %x [current breadcrumb %x], completed? %d\n",
572 engine->name,
573 i915_gem_request_get_seqno(work->flip_queued_req),
574 dev_priv->next_seqno,
575 intel_engine_get_seqno(engine),
576 i915_gem_request_completed(work->flip_queued_req));
577 } else
578 seq_printf(m, "Flip not associated with any ring\n");
579 seq_printf(m, "Flip queued on frame %d, (was ready on frame %d), now %d\n",
580 work->flip_queued_vblank,
581 work->flip_ready_vblank,
582 intel_crtc_get_vblank_counter(crtc));
583 seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
584
585 if (INTEL_GEN(dev_priv) >= 4)
586 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(crtc->plane)));
587 else
588 addr = I915_READ(DSPADDR(crtc->plane));
589 seq_printf(m, "Current scanout address 0x%08x\n", addr);
590
591 if (work->pending_flip_obj) {
592 seq_printf(m, "New framebuffer address 0x%08lx\n", (long)work->gtt_offset);
593 seq_printf(m, "MMIO update completed? %d\n", addr == work->gtt_offset);
594 }
595 }
596 spin_unlock_irq(&dev->event_lock);
597 }
598
599 mutex_unlock(&dev->struct_mutex);
600
601 return 0;
602}
603
604static int i915_gem_batch_pool_info(struct seq_file *m, void *data)
605{
606 struct drm_i915_private *dev_priv = node_to_i915(m->private);
607 struct drm_device *dev = &dev_priv->drm;
608 struct drm_i915_gem_object *obj;
609 struct intel_engine_cs *engine;
610 int total = 0;
611 int ret, j;
612
613 ret = mutex_lock_interruptible(&dev->struct_mutex);
614 if (ret)
615 return ret;
616
617 for_each_engine(engine, dev_priv) {
618 for (j = 0; j < ARRAY_SIZE(engine->batch_pool.cache_list); j++) {
619 int count;
620
621 count = 0;
622 list_for_each_entry(obj,
623 &engine->batch_pool.cache_list[j],
624 batch_pool_link)
625 count++;
626 seq_printf(m, "%s cache[%d]: %d objects\n",
627 engine->name, j, count);
628
629 list_for_each_entry(obj,
630 &engine->batch_pool.cache_list[j],
631 batch_pool_link) {
632 seq_puts(m, " ");
633 describe_obj(m, obj);
634 seq_putc(m, '\n');
635 }
636
637 total += count;
638 }
639 }
640
641 seq_printf(m, "total: %d\n", total);
642
643 mutex_unlock(&dev->struct_mutex);
644
645 return 0;
646}
647
648static int i915_gem_request_info(struct seq_file *m, void *data)
649{
650 struct drm_i915_private *dev_priv = node_to_i915(m->private);
651 struct drm_device *dev = &dev_priv->drm;
652 struct intel_engine_cs *engine;
653 struct drm_i915_gem_request *req;
654 int ret, any;
655
656 ret = mutex_lock_interruptible(&dev->struct_mutex);
657 if (ret)
658 return ret;
659
660 any = 0;
661 for_each_engine(engine, dev_priv) {
662 int count;
663
664 count = 0;
665 list_for_each_entry(req, &engine->request_list, link)
666 count++;
667 if (count == 0)
668 continue;
669
670 seq_printf(m, "%s requests: %d\n", engine->name, count);
671 list_for_each_entry(req, &engine->request_list, link) {
672 struct pid *pid = req->ctx->pid;
673 struct task_struct *task;
674
675 rcu_read_lock();
676 task = pid ? pid_task(pid, PIDTYPE_PID) : NULL;
677 seq_printf(m, " %x @ %d: %s [%d]\n",
678 req->fence.seqno,
679 (int) (jiffies - req->emitted_jiffies),
680 task ? task->comm : "<unknown>",
681 task ? task->pid : -1);
682 rcu_read_unlock();
683 }
684
685 any++;
686 }
687 mutex_unlock(&dev->struct_mutex);
688
689 if (any == 0)
690 seq_puts(m, "No requests\n");
691
692 return 0;
693}
694
695static void i915_ring_seqno_info(struct seq_file *m,
696 struct intel_engine_cs *engine)
697{
698 struct intel_breadcrumbs *b = &engine->breadcrumbs;
699 struct rb_node *rb;
700
701 seq_printf(m, "Current sequence (%s): %x\n",
702 engine->name, intel_engine_get_seqno(engine));
703
704 spin_lock(&b->lock);
705 for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
706 struct intel_wait *w = container_of(rb, typeof(*w), node);
707
708 seq_printf(m, "Waiting (%s): %s [%d] on %x\n",
709 engine->name, w->tsk->comm, w->tsk->pid, w->seqno);
710 }
711 spin_unlock(&b->lock);
712}
713
714static int i915_gem_seqno_info(struct seq_file *m, void *data)
715{
716 struct drm_i915_private *dev_priv = node_to_i915(m->private);
717 struct drm_device *dev = &dev_priv->drm;
718 struct intel_engine_cs *engine;
719 int ret;
720
721 ret = mutex_lock_interruptible(&dev->struct_mutex);
722 if (ret)
723 return ret;
724 intel_runtime_pm_get(dev_priv);
725
726 for_each_engine(engine, dev_priv)
727 i915_ring_seqno_info(m, engine);
728
729 intel_runtime_pm_put(dev_priv);
730 mutex_unlock(&dev->struct_mutex);
731
732 return 0;
733}
734
735
736static int i915_interrupt_info(struct seq_file *m, void *data)
737{
738 struct drm_i915_private *dev_priv = node_to_i915(m->private);
739 struct drm_device *dev = &dev_priv->drm;
740 struct intel_engine_cs *engine;
741 int ret, i, pipe;
742
743 ret = mutex_lock_interruptible(&dev->struct_mutex);
744 if (ret)
745 return ret;
746 intel_runtime_pm_get(dev_priv);
747
748 if (IS_CHERRYVIEW(dev_priv)) {
749 seq_printf(m, "Master Interrupt Control:\t%08x\n",
750 I915_READ(GEN8_MASTER_IRQ));
751
752 seq_printf(m, "Display IER:\t%08x\n",
753 I915_READ(VLV_IER));
754 seq_printf(m, "Display IIR:\t%08x\n",
755 I915_READ(VLV_IIR));
756 seq_printf(m, "Display IIR_RW:\t%08x\n",
757 I915_READ(VLV_IIR_RW));
758 seq_printf(m, "Display IMR:\t%08x\n",
759 I915_READ(VLV_IMR));
760 for_each_pipe(dev_priv, pipe)
761 seq_printf(m, "Pipe %c stat:\t%08x\n",
762 pipe_name(pipe),
763 I915_READ(PIPESTAT(pipe)));
764
765 seq_printf(m, "Port hotplug:\t%08x\n",
766 I915_READ(PORT_HOTPLUG_EN));
767 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
768 I915_READ(VLV_DPFLIPSTAT));
769 seq_printf(m, "DPINVGTT:\t%08x\n",
770 I915_READ(DPINVGTT));
771
772 for (i = 0; i < 4; i++) {
773 seq_printf(m, "GT Interrupt IMR %d:\t%08x\n",
774 i, I915_READ(GEN8_GT_IMR(i)));
775 seq_printf(m, "GT Interrupt IIR %d:\t%08x\n",
776 i, I915_READ(GEN8_GT_IIR(i)));
777 seq_printf(m, "GT Interrupt IER %d:\t%08x\n",
778 i, I915_READ(GEN8_GT_IER(i)));
779 }
780
781 seq_printf(m, "PCU interrupt mask:\t%08x\n",
782 I915_READ(GEN8_PCU_IMR));
783 seq_printf(m, "PCU interrupt identity:\t%08x\n",
784 I915_READ(GEN8_PCU_IIR));
785 seq_printf(m, "PCU interrupt enable:\t%08x\n",
786 I915_READ(GEN8_PCU_IER));
787 } else if (INTEL_GEN(dev_priv) >= 8) {
788 seq_printf(m, "Master Interrupt Control:\t%08x\n",
789 I915_READ(GEN8_MASTER_IRQ));
790
791 for (i = 0; i < 4; i++) {
792 seq_printf(m, "GT Interrupt IMR %d:\t%08x\n",
793 i, I915_READ(GEN8_GT_IMR(i)));
794 seq_printf(m, "GT Interrupt IIR %d:\t%08x\n",
795 i, I915_READ(GEN8_GT_IIR(i)));
796 seq_printf(m, "GT Interrupt IER %d:\t%08x\n",
797 i, I915_READ(GEN8_GT_IER(i)));
798 }
799
800 for_each_pipe(dev_priv, pipe) {
801 enum intel_display_power_domain power_domain;
802
803 power_domain = POWER_DOMAIN_PIPE(pipe);
804 if (!intel_display_power_get_if_enabled(dev_priv,
805 power_domain)) {
806 seq_printf(m, "Pipe %c power disabled\n",
807 pipe_name(pipe));
808 continue;
809 }
810 seq_printf(m, "Pipe %c IMR:\t%08x\n",
811 pipe_name(pipe),
812 I915_READ(GEN8_DE_PIPE_IMR(pipe)));
813 seq_printf(m, "Pipe %c IIR:\t%08x\n",
814 pipe_name(pipe),
815 I915_READ(GEN8_DE_PIPE_IIR(pipe)));
816 seq_printf(m, "Pipe %c IER:\t%08x\n",
817 pipe_name(pipe),
818 I915_READ(GEN8_DE_PIPE_IER(pipe)));
819
820 intel_display_power_put(dev_priv, power_domain);
821 }
822
823 seq_printf(m, "Display Engine port interrupt mask:\t%08x\n",
824 I915_READ(GEN8_DE_PORT_IMR));
825 seq_printf(m, "Display Engine port interrupt identity:\t%08x\n",
826 I915_READ(GEN8_DE_PORT_IIR));
827 seq_printf(m, "Display Engine port interrupt enable:\t%08x\n",
828 I915_READ(GEN8_DE_PORT_IER));
829
830 seq_printf(m, "Display Engine misc interrupt mask:\t%08x\n",
831 I915_READ(GEN8_DE_MISC_IMR));
832 seq_printf(m, "Display Engine misc interrupt identity:\t%08x\n",
833 I915_READ(GEN8_DE_MISC_IIR));
834 seq_printf(m, "Display Engine misc interrupt enable:\t%08x\n",
835 I915_READ(GEN8_DE_MISC_IER));
836
837 seq_printf(m, "PCU interrupt mask:\t%08x\n",
838 I915_READ(GEN8_PCU_IMR));
839 seq_printf(m, "PCU interrupt identity:\t%08x\n",
840 I915_READ(GEN8_PCU_IIR));
841 seq_printf(m, "PCU interrupt enable:\t%08x\n",
842 I915_READ(GEN8_PCU_IER));
843 } else if (IS_VALLEYVIEW(dev_priv)) {
844 seq_printf(m, "Display IER:\t%08x\n",
845 I915_READ(VLV_IER));
846 seq_printf(m, "Display IIR:\t%08x\n",
847 I915_READ(VLV_IIR));
848 seq_printf(m, "Display IIR_RW:\t%08x\n",
849 I915_READ(VLV_IIR_RW));
850 seq_printf(m, "Display IMR:\t%08x\n",
851 I915_READ(VLV_IMR));
852 for_each_pipe(dev_priv, pipe)
853 seq_printf(m, "Pipe %c stat:\t%08x\n",
854 pipe_name(pipe),
855 I915_READ(PIPESTAT(pipe)));
856
857 seq_printf(m, "Master IER:\t%08x\n",
858 I915_READ(VLV_MASTER_IER));
859
860 seq_printf(m, "Render IER:\t%08x\n",
861 I915_READ(GTIER));
862 seq_printf(m, "Render IIR:\t%08x\n",
863 I915_READ(GTIIR));
864 seq_printf(m, "Render IMR:\t%08x\n",
865 I915_READ(GTIMR));
866
867 seq_printf(m, "PM IER:\t\t%08x\n",
868 I915_READ(GEN6_PMIER));
869 seq_printf(m, "PM IIR:\t\t%08x\n",
870 I915_READ(GEN6_PMIIR));
871 seq_printf(m, "PM IMR:\t\t%08x\n",
872 I915_READ(GEN6_PMIMR));
873
874 seq_printf(m, "Port hotplug:\t%08x\n",
875 I915_READ(PORT_HOTPLUG_EN));
876 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
877 I915_READ(VLV_DPFLIPSTAT));
878 seq_printf(m, "DPINVGTT:\t%08x\n",
879 I915_READ(DPINVGTT));
880
881 } else if (!HAS_PCH_SPLIT(dev_priv)) {
882 seq_printf(m, "Interrupt enable: %08x\n",
883 I915_READ(IER));
884 seq_printf(m, "Interrupt identity: %08x\n",
885 I915_READ(IIR));
886 seq_printf(m, "Interrupt mask: %08x\n",
887 I915_READ(IMR));
888 for_each_pipe(dev_priv, pipe)
889 seq_printf(m, "Pipe %c stat: %08x\n",
890 pipe_name(pipe),
891 I915_READ(PIPESTAT(pipe)));
892 } else {
893 seq_printf(m, "North Display Interrupt enable: %08x\n",
894 I915_READ(DEIER));
895 seq_printf(m, "North Display Interrupt identity: %08x\n",
896 I915_READ(DEIIR));
897 seq_printf(m, "North Display Interrupt mask: %08x\n",
898 I915_READ(DEIMR));
899 seq_printf(m, "South Display Interrupt enable: %08x\n",
900 I915_READ(SDEIER));
901 seq_printf(m, "South Display Interrupt identity: %08x\n",
902 I915_READ(SDEIIR));
903 seq_printf(m, "South Display Interrupt mask: %08x\n",
904 I915_READ(SDEIMR));
905 seq_printf(m, "Graphics Interrupt enable: %08x\n",
906 I915_READ(GTIER));
907 seq_printf(m, "Graphics Interrupt identity: %08x\n",
908 I915_READ(GTIIR));
909 seq_printf(m, "Graphics Interrupt mask: %08x\n",
910 I915_READ(GTIMR));
911 }
912 for_each_engine(engine, dev_priv) {
913 if (INTEL_GEN(dev_priv) >= 6) {
914 seq_printf(m,
915 "Graphics Interrupt mask (%s): %08x\n",
916 engine->name, I915_READ_IMR(engine));
917 }
918 i915_ring_seqno_info(m, engine);
919 }
920 intel_runtime_pm_put(dev_priv);
921 mutex_unlock(&dev->struct_mutex);
922
923 return 0;
924}
925
926static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
927{
928 struct drm_i915_private *dev_priv = node_to_i915(m->private);
929 struct drm_device *dev = &dev_priv->drm;
930 int i, ret;
931
932 ret = mutex_lock_interruptible(&dev->struct_mutex);
933 if (ret)
934 return ret;
935
936 seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
937 for (i = 0; i < dev_priv->num_fence_regs; i++) {
938 struct i915_vma *vma = dev_priv->fence_regs[i].vma;
939
940 seq_printf(m, "Fence %d, pin count = %d, object = ",
941 i, dev_priv->fence_regs[i].pin_count);
942 if (!vma)
943 seq_puts(m, "unused");
944 else
945 describe_obj(m, vma->obj);
946 seq_putc(m, '\n');
947 }
948
949 mutex_unlock(&dev->struct_mutex);
950 return 0;
951}
952
953static int i915_hws_info(struct seq_file *m, void *data)
954{
955 struct drm_info_node *node = m->private;
956 struct drm_i915_private *dev_priv = node_to_i915(node);
957 struct intel_engine_cs *engine;
958 const u32 *hws;
959 int i;
960
961 engine = &dev_priv->engine[(uintptr_t)node->info_ent->data];
962 hws = engine->status_page.page_addr;
963 if (hws == NULL)
964 return 0;
965
966 for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
967 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
968 i * 4,
969 hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
970 }
971 return 0;
972}
973
974static ssize_t
975i915_error_state_write(struct file *filp,
976 const char __user *ubuf,
977 size_t cnt,
978 loff_t *ppos)
979{
980 struct i915_error_state_file_priv *error_priv = filp->private_data;
981
982 DRM_DEBUG_DRIVER("Resetting error state\n");
983 i915_destroy_error_state(error_priv->dev);
984
985 return cnt;
986}
987
988static int i915_error_state_open(struct inode *inode, struct file *file)
989{
990 struct drm_i915_private *dev_priv = inode->i_private;
991 struct i915_error_state_file_priv *error_priv;
992
993 error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
994 if (!error_priv)
995 return -ENOMEM;
996
997 error_priv->dev = &dev_priv->drm;
998
999 i915_error_state_get(&dev_priv->drm, error_priv);
1000
1001 file->private_data = error_priv;
1002
1003 return 0;
1004}
1005
1006static int i915_error_state_release(struct inode *inode, struct file *file)
1007{
1008 struct i915_error_state_file_priv *error_priv = file->private_data;
1009
1010 i915_error_state_put(error_priv);
1011 kfree(error_priv);
1012
1013 return 0;
1014}
1015
1016static ssize_t i915_error_state_read(struct file *file, char __user *userbuf,
1017 size_t count, loff_t *pos)
1018{
1019 struct i915_error_state_file_priv *error_priv = file->private_data;
1020 struct drm_i915_error_state_buf error_str;
1021 loff_t tmp_pos = 0;
1022 ssize_t ret_count = 0;
1023 int ret;
1024
1025 ret = i915_error_state_buf_init(&error_str,
1026 to_i915(error_priv->dev), count, *pos);
1027 if (ret)
1028 return ret;
1029
1030 ret = i915_error_state_to_str(&error_str, error_priv);
1031 if (ret)
1032 goto out;
1033
1034 ret_count = simple_read_from_buffer(userbuf, count, &tmp_pos,
1035 error_str.buf,
1036 error_str.bytes);
1037
1038 if (ret_count < 0)
1039 ret = ret_count;
1040 else
1041 *pos = error_str.start + ret_count;
1042out:
1043 i915_error_state_buf_release(&error_str);
1044 return ret ?: ret_count;
1045}
1046
1047static const struct file_operations i915_error_state_fops = {
1048 .owner = THIS_MODULE,
1049 .open = i915_error_state_open,
1050 .read = i915_error_state_read,
1051 .write = i915_error_state_write,
1052 .llseek = default_llseek,
1053 .release = i915_error_state_release,
1054};
1055
1056static int
1057i915_next_seqno_get(void *data, u64 *val)
1058{
1059 struct drm_i915_private *dev_priv = data;
1060 int ret;
1061
1062 ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex);
1063 if (ret)
1064 return ret;
1065
1066 *val = dev_priv->next_seqno;
1067 mutex_unlock(&dev_priv->drm.struct_mutex);
1068
1069 return 0;
1070}
1071
1072static int
1073i915_next_seqno_set(void *data, u64 val)
1074{
1075 struct drm_i915_private *dev_priv = data;
1076 struct drm_device *dev = &dev_priv->drm;
1077 int ret;
1078
1079 ret = mutex_lock_interruptible(&dev->struct_mutex);
1080 if (ret)
1081 return ret;
1082
1083 ret = i915_gem_set_seqno(dev, val);
1084 mutex_unlock(&dev->struct_mutex);
1085
1086 return ret;
1087}
1088
1089DEFINE_SIMPLE_ATTRIBUTE(i915_next_seqno_fops,
1090 i915_next_seqno_get, i915_next_seqno_set,
1091 "0x%llx\n");
1092
1093static int i915_frequency_info(struct seq_file *m, void *unused)
1094{
1095 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1096 struct drm_device *dev = &dev_priv->drm;
1097 int ret = 0;
1098
1099 intel_runtime_pm_get(dev_priv);
1100
1101 if (IS_GEN5(dev_priv)) {
1102 u16 rgvswctl = I915_READ16(MEMSWCTL);
1103 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
1104
1105 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
1106 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
1107 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
1108 MEMSTAT_VID_SHIFT);
1109 seq_printf(m, "Current P-state: %d\n",
1110 (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
1111 } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
1112 u32 freq_sts;
1113
1114 mutex_lock(&dev_priv->rps.hw_lock);
1115 freq_sts = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
1116 seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
1117 seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
1118
1119 seq_printf(m, "actual GPU freq: %d MHz\n",
1120 intel_gpu_freq(dev_priv, (freq_sts >> 8) & 0xff));
1121
1122 seq_printf(m, "current GPU freq: %d MHz\n",
1123 intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq));
1124
1125 seq_printf(m, "max GPU freq: %d MHz\n",
1126 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
1127
1128 seq_printf(m, "min GPU freq: %d MHz\n",
1129 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq));
1130
1131 seq_printf(m, "idle GPU freq: %d MHz\n",
1132 intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq));
1133
1134 seq_printf(m,
1135 "efficient (RPe) frequency: %d MHz\n",
1136 intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq));
1137 mutex_unlock(&dev_priv->rps.hw_lock);
1138 } else if (INTEL_GEN(dev_priv) >= 6) {
1139 u32 rp_state_limits;
1140 u32 gt_perf_status;
1141 u32 rp_state_cap;
1142 u32 rpmodectl, rpinclimit, rpdeclimit;
1143 u32 rpstat, cagf, reqf;
1144 u32 rpupei, rpcurup, rpprevup;
1145 u32 rpdownei, rpcurdown, rpprevdown;
1146 u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
1147 int max_freq;
1148
1149 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
1150 if (IS_BROXTON(dev_priv)) {
1151 rp_state_cap = I915_READ(BXT_RP_STATE_CAP);
1152 gt_perf_status = I915_READ(BXT_GT_PERF_STATUS);
1153 } else {
1154 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
1155 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
1156 }
1157
1158 /* RPSTAT1 is in the GT power well */
1159 ret = mutex_lock_interruptible(&dev->struct_mutex);
1160 if (ret)
1161 goto out;
1162
1163 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
1164
1165 reqf = I915_READ(GEN6_RPNSWREQ);
1166 if (IS_GEN9(dev_priv))
1167 reqf >>= 23;
1168 else {
1169 reqf &= ~GEN6_TURBO_DISABLE;
1170 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
1171 reqf >>= 24;
1172 else
1173 reqf >>= 25;
1174 }
1175 reqf = intel_gpu_freq(dev_priv, reqf);
1176
1177 rpmodectl = I915_READ(GEN6_RP_CONTROL);
1178 rpinclimit = I915_READ(GEN6_RP_UP_THRESHOLD);
1179 rpdeclimit = I915_READ(GEN6_RP_DOWN_THRESHOLD);
1180
1181 rpstat = I915_READ(GEN6_RPSTAT1);
1182 rpupei = I915_READ(GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
1183 rpcurup = I915_READ(GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
1184 rpprevup = I915_READ(GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
1185 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
1186 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
1187 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
1188 if (IS_GEN9(dev_priv))
1189 cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
1190 else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
1191 cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
1192 else
1193 cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
1194 cagf = intel_gpu_freq(dev_priv, cagf);
1195
1196 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
1197 mutex_unlock(&dev->struct_mutex);
1198
1199 if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv)) {
1200 pm_ier = I915_READ(GEN6_PMIER);
1201 pm_imr = I915_READ(GEN6_PMIMR);
1202 pm_isr = I915_READ(GEN6_PMISR);
1203 pm_iir = I915_READ(GEN6_PMIIR);
1204 pm_mask = I915_READ(GEN6_PMINTRMSK);
1205 } else {
1206 pm_ier = I915_READ(GEN8_GT_IER(2));
1207 pm_imr = I915_READ(GEN8_GT_IMR(2));
1208 pm_isr = I915_READ(GEN8_GT_ISR(2));
1209 pm_iir = I915_READ(GEN8_GT_IIR(2));
1210 pm_mask = I915_READ(GEN6_PMINTRMSK);
1211 }
1212 seq_printf(m, "PM IER=0x%08x IMR=0x%08x ISR=0x%08x IIR=0x%08x, MASK=0x%08x\n",
1213 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask);
1214 seq_printf(m, "pm_intr_keep: 0x%08x\n", dev_priv->rps.pm_intr_keep);
1215 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
1216 seq_printf(m, "Render p-state ratio: %d\n",
1217 (gt_perf_status & (IS_GEN9(dev_priv) ? 0x1ff00 : 0xff00)) >> 8);
1218 seq_printf(m, "Render p-state VID: %d\n",
1219 gt_perf_status & 0xff);
1220 seq_printf(m, "Render p-state limit: %d\n",
1221 rp_state_limits & 0xff);
1222 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
1223 seq_printf(m, "RPMODECTL: 0x%08x\n", rpmodectl);
1224 seq_printf(m, "RPINCLIMIT: 0x%08x\n", rpinclimit);
1225 seq_printf(m, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
1226 seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
1227 seq_printf(m, "CAGF: %dMHz\n", cagf);
1228 seq_printf(m, "RP CUR UP EI: %d (%dus)\n",
1229 rpupei, GT_PM_INTERVAL_TO_US(dev_priv, rpupei));
1230 seq_printf(m, "RP CUR UP: %d (%dus)\n",
1231 rpcurup, GT_PM_INTERVAL_TO_US(dev_priv, rpcurup));
1232 seq_printf(m, "RP PREV UP: %d (%dus)\n",
1233 rpprevup, GT_PM_INTERVAL_TO_US(dev_priv, rpprevup));
1234 seq_printf(m, "Up threshold: %d%%\n",
1235 dev_priv->rps.up_threshold);
1236
1237 seq_printf(m, "RP CUR DOWN EI: %d (%dus)\n",
1238 rpdownei, GT_PM_INTERVAL_TO_US(dev_priv, rpdownei));
1239 seq_printf(m, "RP CUR DOWN: %d (%dus)\n",
1240 rpcurdown, GT_PM_INTERVAL_TO_US(dev_priv, rpcurdown));
1241 seq_printf(m, "RP PREV DOWN: %d (%dus)\n",
1242 rpprevdown, GT_PM_INTERVAL_TO_US(dev_priv, rpprevdown));
1243 seq_printf(m, "Down threshold: %d%%\n",
1244 dev_priv->rps.down_threshold);
1245
1246 max_freq = (IS_BROXTON(dev_priv) ? rp_state_cap >> 0 :
1247 rp_state_cap >> 16) & 0xff;
1248 max_freq *= (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ?
1249 GEN9_FREQ_SCALER : 1);
1250 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
1251 intel_gpu_freq(dev_priv, max_freq));
1252
1253 max_freq = (rp_state_cap & 0xff00) >> 8;
1254 max_freq *= (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ?
1255 GEN9_FREQ_SCALER : 1);
1256 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
1257 intel_gpu_freq(dev_priv, max_freq));
1258
1259 max_freq = (IS_BROXTON(dev_priv) ? rp_state_cap >> 16 :
1260 rp_state_cap >> 0) & 0xff;
1261 max_freq *= (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ?
1262 GEN9_FREQ_SCALER : 1);
1263 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
1264 intel_gpu_freq(dev_priv, max_freq));
1265 seq_printf(m, "Max overclocked frequency: %dMHz\n",
1266 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
1267
1268 seq_printf(m, "Current freq: %d MHz\n",
1269 intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq));
1270 seq_printf(m, "Actual freq: %d MHz\n", cagf);
1271 seq_printf(m, "Idle freq: %d MHz\n",
1272 intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq));
1273 seq_printf(m, "Min freq: %d MHz\n",
1274 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq));
1275 seq_printf(m, "Boost freq: %d MHz\n",
1276 intel_gpu_freq(dev_priv, dev_priv->rps.boost_freq));
1277 seq_printf(m, "Max freq: %d MHz\n",
1278 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
1279 seq_printf(m,
1280 "efficient (RPe) frequency: %d MHz\n",
1281 intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq));
1282 } else {
1283 seq_puts(m, "no P-state info available\n");
1284 }
1285
1286 seq_printf(m, "Current CD clock frequency: %d kHz\n", dev_priv->cdclk_freq);
1287 seq_printf(m, "Max CD clock frequency: %d kHz\n", dev_priv->max_cdclk_freq);
1288 seq_printf(m, "Max pixel clock frequency: %d kHz\n", dev_priv->max_dotclk_freq);
1289
1290out:
1291 intel_runtime_pm_put(dev_priv);
1292 return ret;
1293}
1294
1295static int i915_hangcheck_info(struct seq_file *m, void *unused)
1296{
1297 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1298 struct intel_engine_cs *engine;
1299 u64 acthd[I915_NUM_ENGINES];
1300 u32 seqno[I915_NUM_ENGINES];
1301 u32 instdone[I915_NUM_INSTDONE_REG];
1302 enum intel_engine_id id;
1303 int j;
1304
1305 if (!i915.enable_hangcheck) {
1306 seq_printf(m, "Hangcheck disabled\n");
1307 return 0;
1308 }
1309
1310 intel_runtime_pm_get(dev_priv);
1311
1312 for_each_engine_id(engine, dev_priv, id) {
1313 acthd[id] = intel_engine_get_active_head(engine);
1314 seqno[id] = intel_engine_get_seqno(engine);
1315 }
1316
1317 i915_get_extra_instdone(dev_priv, instdone);
1318
1319 intel_runtime_pm_put(dev_priv);
1320
1321 if (delayed_work_pending(&dev_priv->gpu_error.hangcheck_work)) {
1322 seq_printf(m, "Hangcheck active, fires in %dms\n",
1323 jiffies_to_msecs(dev_priv->gpu_error.hangcheck_work.timer.expires -
1324 jiffies));
1325 } else
1326 seq_printf(m, "Hangcheck inactive\n");
1327
1328 for_each_engine_id(engine, dev_priv, id) {
1329 seq_printf(m, "%s:\n", engine->name);
1330 seq_printf(m, "\tseqno = %x [current %x, last %x]\n",
1331 engine->hangcheck.seqno,
1332 seqno[id],
1333 engine->last_submitted_seqno);
1334 seq_printf(m, "\twaiters? %s, fake irq active? %s\n",
1335 yesno(intel_engine_has_waiter(engine)),
1336 yesno(test_bit(engine->id,
1337 &dev_priv->gpu_error.missed_irq_rings)));
1338 seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n",
1339 (long long)engine->hangcheck.acthd,
1340 (long long)acthd[id]);
1341 seq_printf(m, "\tscore = %d\n", engine->hangcheck.score);
1342 seq_printf(m, "\taction = %d\n", engine->hangcheck.action);
1343
1344 if (engine->id == RCS) {
1345 seq_puts(m, "\tinstdone read =");
1346
1347 for (j = 0; j < I915_NUM_INSTDONE_REG; j++)
1348 seq_printf(m, " 0x%08x", instdone[j]);
1349
1350 seq_puts(m, "\n\tinstdone accu =");
1351
1352 for (j = 0; j < I915_NUM_INSTDONE_REG; j++)
1353 seq_printf(m, " 0x%08x",
1354 engine->hangcheck.instdone[j]);
1355
1356 seq_puts(m, "\n");
1357 }
1358 }
1359
1360 return 0;
1361}
1362
1363static int ironlake_drpc_info(struct seq_file *m)
1364{
1365 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1366 struct drm_device *dev = &dev_priv->drm;
1367 u32 rgvmodectl, rstdbyctl;
1368 u16 crstandvid;
1369 int ret;
1370
1371 ret = mutex_lock_interruptible(&dev->struct_mutex);
1372 if (ret)
1373 return ret;
1374 intel_runtime_pm_get(dev_priv);
1375
1376 rgvmodectl = I915_READ(MEMMODECTL);
1377 rstdbyctl = I915_READ(RSTDBYCTL);
1378 crstandvid = I915_READ16(CRSTANDVID);
1379
1380 intel_runtime_pm_put(dev_priv);
1381 mutex_unlock(&dev->struct_mutex);
1382
1383 seq_printf(m, "HD boost: %s\n", yesno(rgvmodectl & MEMMODE_BOOST_EN));
1384 seq_printf(m, "Boost freq: %d\n",
1385 (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1386 MEMMODE_BOOST_FREQ_SHIFT);
1387 seq_printf(m, "HW control enabled: %s\n",
1388 yesno(rgvmodectl & MEMMODE_HWIDLE_EN));
1389 seq_printf(m, "SW control enabled: %s\n",
1390 yesno(rgvmodectl & MEMMODE_SWMODE_EN));
1391 seq_printf(m, "Gated voltage change: %s\n",
1392 yesno(rgvmodectl & MEMMODE_RCLK_GATE));
1393 seq_printf(m, "Starting frequency: P%d\n",
1394 (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1395 seq_printf(m, "Max P-state: P%d\n",
1396 (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1397 seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1398 seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1399 seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1400 seq_printf(m, "Render standby enabled: %s\n",
1401 yesno(!(rstdbyctl & RCX_SW_EXIT)));
1402 seq_puts(m, "Current RS state: ");
1403 switch (rstdbyctl & RSX_STATUS_MASK) {
1404 case RSX_STATUS_ON:
1405 seq_puts(m, "on\n");
1406 break;
1407 case RSX_STATUS_RC1:
1408 seq_puts(m, "RC1\n");
1409 break;
1410 case RSX_STATUS_RC1E:
1411 seq_puts(m, "RC1E\n");
1412 break;
1413 case RSX_STATUS_RS1:
1414 seq_puts(m, "RS1\n");
1415 break;
1416 case RSX_STATUS_RS2:
1417 seq_puts(m, "RS2 (RC6)\n");
1418 break;
1419 case RSX_STATUS_RS3:
1420 seq_puts(m, "RC3 (RC6+)\n");
1421 break;
1422 default:
1423 seq_puts(m, "unknown\n");
1424 break;
1425 }
1426
1427 return 0;
1428}
1429
1430static int i915_forcewake_domains(struct seq_file *m, void *data)
1431{
1432 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1433 struct intel_uncore_forcewake_domain *fw_domain;
1434
1435 spin_lock_irq(&dev_priv->uncore.lock);
1436 for_each_fw_domain(fw_domain, dev_priv) {
1437 seq_printf(m, "%s.wake_count = %u\n",
1438 intel_uncore_forcewake_domain_to_str(fw_domain->id),
1439 fw_domain->wake_count);
1440 }
1441 spin_unlock_irq(&dev_priv->uncore.lock);
1442
1443 return 0;
1444}
1445
1446static int vlv_drpc_info(struct seq_file *m)
1447{
1448 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1449 u32 rpmodectl1, rcctl1, pw_status;
1450
1451 intel_runtime_pm_get(dev_priv);
1452
1453 pw_status = I915_READ(VLV_GTLC_PW_STATUS);
1454 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1455 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1456
1457 intel_runtime_pm_put(dev_priv);
1458
1459 seq_printf(m, "Video Turbo Mode: %s\n",
1460 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1461 seq_printf(m, "Turbo enabled: %s\n",
1462 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1463 seq_printf(m, "HW control enabled: %s\n",
1464 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1465 seq_printf(m, "SW control enabled: %s\n",
1466 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1467 GEN6_RP_MEDIA_SW_MODE));
1468 seq_printf(m, "RC6 Enabled: %s\n",
1469 yesno(rcctl1 & (GEN7_RC_CTL_TO_MODE |
1470 GEN6_RC_CTL_EI_MODE(1))));
1471 seq_printf(m, "Render Power Well: %s\n",
1472 (pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
1473 seq_printf(m, "Media Power Well: %s\n",
1474 (pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");
1475
1476 seq_printf(m, "Render RC6 residency since boot: %u\n",
1477 I915_READ(VLV_GT_RENDER_RC6));
1478 seq_printf(m, "Media RC6 residency since boot: %u\n",
1479 I915_READ(VLV_GT_MEDIA_RC6));
1480
1481 return i915_forcewake_domains(m, NULL);
1482}
1483
1484static int gen6_drpc_info(struct seq_file *m)
1485{
1486 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1487 struct drm_device *dev = &dev_priv->drm;
1488 u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1489 u32 gen9_powergate_enable = 0, gen9_powergate_status = 0;
1490 unsigned forcewake_count;
1491 int count = 0, ret;
1492
1493 ret = mutex_lock_interruptible(&dev->struct_mutex);
1494 if (ret)
1495 return ret;
1496 intel_runtime_pm_get(dev_priv);
1497
1498 spin_lock_irq(&dev_priv->uncore.lock);
1499 forcewake_count = dev_priv->uncore.fw_domain[FW_DOMAIN_ID_RENDER].wake_count;
1500 spin_unlock_irq(&dev_priv->uncore.lock);
1501
1502 if (forcewake_count) {
1503 seq_puts(m, "RC information inaccurate because somebody "
1504 "holds a forcewake reference \n");
1505 } else {
1506 /* NB: we cannot use forcewake, else we read the wrong values */
1507 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1508 udelay(10);
1509 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1510 }
1511
1512 gt_core_status = I915_READ_FW(GEN6_GT_CORE_STATUS);
1513 trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4, true);
1514
1515 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1516 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1517 if (INTEL_GEN(dev_priv) >= 9) {
1518 gen9_powergate_enable = I915_READ(GEN9_PG_ENABLE);
1519 gen9_powergate_status = I915_READ(GEN9_PWRGT_DOMAIN_STATUS);
1520 }
1521 mutex_unlock(&dev->struct_mutex);
1522 mutex_lock(&dev_priv->rps.hw_lock);
1523 sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1524 mutex_unlock(&dev_priv->rps.hw_lock);
1525
1526 intel_runtime_pm_put(dev_priv);
1527
1528 seq_printf(m, "Video Turbo Mode: %s\n",
1529 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1530 seq_printf(m, "HW control enabled: %s\n",
1531 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1532 seq_printf(m, "SW control enabled: %s\n",
1533 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1534 GEN6_RP_MEDIA_SW_MODE));
1535 seq_printf(m, "RC1e Enabled: %s\n",
1536 yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1537 seq_printf(m, "RC6 Enabled: %s\n",
1538 yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1539 if (INTEL_GEN(dev_priv) >= 9) {
1540 seq_printf(m, "Render Well Gating Enabled: %s\n",
1541 yesno(gen9_powergate_enable & GEN9_RENDER_PG_ENABLE));
1542 seq_printf(m, "Media Well Gating Enabled: %s\n",
1543 yesno(gen9_powergate_enable & GEN9_MEDIA_PG_ENABLE));
1544 }
1545 seq_printf(m, "Deep RC6 Enabled: %s\n",
1546 yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1547 seq_printf(m, "Deepest RC6 Enabled: %s\n",
1548 yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1549 seq_puts(m, "Current RC state: ");
1550 switch (gt_core_status & GEN6_RCn_MASK) {
1551 case GEN6_RC0:
1552 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1553 seq_puts(m, "Core Power Down\n");
1554 else
1555 seq_puts(m, "on\n");
1556 break;
1557 case GEN6_RC3:
1558 seq_puts(m, "RC3\n");
1559 break;
1560 case GEN6_RC6:
1561 seq_puts(m, "RC6\n");
1562 break;
1563 case GEN6_RC7:
1564 seq_puts(m, "RC7\n");
1565 break;
1566 default:
1567 seq_puts(m, "Unknown\n");
1568 break;
1569 }
1570
1571 seq_printf(m, "Core Power Down: %s\n",
1572 yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1573 if (INTEL_GEN(dev_priv) >= 9) {
1574 seq_printf(m, "Render Power Well: %s\n",
1575 (gen9_powergate_status &
1576 GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
1577 seq_printf(m, "Media Power Well: %s\n",
1578 (gen9_powergate_status &
1579 GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
1580 }
1581
1582 /* Not exactly sure what this is */
1583 seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1584 I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1585 seq_printf(m, "RC6 residency since boot: %u\n",
1586 I915_READ(GEN6_GT_GFX_RC6));
1587 seq_printf(m, "RC6+ residency since boot: %u\n",
1588 I915_READ(GEN6_GT_GFX_RC6p));
1589 seq_printf(m, "RC6++ residency since boot: %u\n",
1590 I915_READ(GEN6_GT_GFX_RC6pp));
1591
1592 seq_printf(m, "RC6 voltage: %dmV\n",
1593 GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1594 seq_printf(m, "RC6+ voltage: %dmV\n",
1595 GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1596 seq_printf(m, "RC6++ voltage: %dmV\n",
1597 GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1598 return i915_forcewake_domains(m, NULL);
1599}
1600
1601static int i915_drpc_info(struct seq_file *m, void *unused)
1602{
1603 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1604
1605 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
1606 return vlv_drpc_info(m);
1607 else if (INTEL_GEN(dev_priv) >= 6)
1608 return gen6_drpc_info(m);
1609 else
1610 return ironlake_drpc_info(m);
1611}
1612
1613static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
1614{
1615 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1616
1617 seq_printf(m, "FB tracking busy bits: 0x%08x\n",
1618 dev_priv->fb_tracking.busy_bits);
1619
1620 seq_printf(m, "FB tracking flip bits: 0x%08x\n",
1621 dev_priv->fb_tracking.flip_bits);
1622
1623 return 0;
1624}
1625
1626static int i915_fbc_status(struct seq_file *m, void *unused)
1627{
1628 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1629
1630 if (!HAS_FBC(dev_priv)) {
1631 seq_puts(m, "FBC unsupported on this chipset\n");
1632 return 0;
1633 }
1634
1635 intel_runtime_pm_get(dev_priv);
1636 mutex_lock(&dev_priv->fbc.lock);
1637
1638 if (intel_fbc_is_active(dev_priv))
1639 seq_puts(m, "FBC enabled\n");
1640 else
1641 seq_printf(m, "FBC disabled: %s\n",
1642 dev_priv->fbc.no_fbc_reason);
1643
1644 if (INTEL_GEN(dev_priv) >= 7)
1645 seq_printf(m, "Compressing: %s\n",
1646 yesno(I915_READ(FBC_STATUS2) &
1647 FBC_COMPRESSION_MASK));
1648
1649 mutex_unlock(&dev_priv->fbc.lock);
1650 intel_runtime_pm_put(dev_priv);
1651
1652 return 0;
1653}
1654
1655static int i915_fbc_fc_get(void *data, u64 *val)
1656{
1657 struct drm_i915_private *dev_priv = data;
1658
1659 if (INTEL_GEN(dev_priv) < 7 || !HAS_FBC(dev_priv))
1660 return -ENODEV;
1661
1662 *val = dev_priv->fbc.false_color;
1663
1664 return 0;
1665}
1666
1667static int i915_fbc_fc_set(void *data, u64 val)
1668{
1669 struct drm_i915_private *dev_priv = data;
1670 u32 reg;
1671
1672 if (INTEL_GEN(dev_priv) < 7 || !HAS_FBC(dev_priv))
1673 return -ENODEV;
1674
1675 mutex_lock(&dev_priv->fbc.lock);
1676
1677 reg = I915_READ(ILK_DPFC_CONTROL);
1678 dev_priv->fbc.false_color = val;
1679
1680 I915_WRITE(ILK_DPFC_CONTROL, val ?
1681 (reg | FBC_CTL_FALSE_COLOR) :
1682 (reg & ~FBC_CTL_FALSE_COLOR));
1683
1684 mutex_unlock(&dev_priv->fbc.lock);
1685 return 0;
1686}
1687
1688DEFINE_SIMPLE_ATTRIBUTE(i915_fbc_fc_fops,
1689 i915_fbc_fc_get, i915_fbc_fc_set,
1690 "%llu\n");
1691
1692static int i915_ips_status(struct seq_file *m, void *unused)
1693{
1694 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1695
1696 if (!HAS_IPS(dev_priv)) {
1697 seq_puts(m, "not supported\n");
1698 return 0;
1699 }
1700
1701 intel_runtime_pm_get(dev_priv);
1702
1703 seq_printf(m, "Enabled by kernel parameter: %s\n",
1704 yesno(i915.enable_ips));
1705
1706 if (INTEL_GEN(dev_priv) >= 8) {
1707 seq_puts(m, "Currently: unknown\n");
1708 } else {
1709 if (I915_READ(IPS_CTL) & IPS_ENABLE)
1710 seq_puts(m, "Currently: enabled\n");
1711 else
1712 seq_puts(m, "Currently: disabled\n");
1713 }
1714
1715 intel_runtime_pm_put(dev_priv);
1716
1717 return 0;
1718}
1719
1720static int i915_sr_status(struct seq_file *m, void *unused)
1721{
1722 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1723 bool sr_enabled = false;
1724
1725 intel_runtime_pm_get(dev_priv);
1726
1727 if (HAS_PCH_SPLIT(dev_priv))
1728 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1729 else if (IS_CRESTLINE(dev_priv) || IS_G4X(dev_priv) ||
1730 IS_I945G(dev_priv) || IS_I945GM(dev_priv))
1731 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1732 else if (IS_I915GM(dev_priv))
1733 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1734 else if (IS_PINEVIEW(dev_priv))
1735 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1736 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
1737 sr_enabled = I915_READ(FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
1738
1739 intel_runtime_pm_put(dev_priv);
1740
1741 seq_printf(m, "self-refresh: %s\n",
1742 sr_enabled ? "enabled" : "disabled");
1743
1744 return 0;
1745}
1746
1747static int i915_emon_status(struct seq_file *m, void *unused)
1748{
1749 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1750 struct drm_device *dev = &dev_priv->drm;
1751 unsigned long temp, chipset, gfx;
1752 int ret;
1753
1754 if (!IS_GEN5(dev_priv))
1755 return -ENODEV;
1756
1757 ret = mutex_lock_interruptible(&dev->struct_mutex);
1758 if (ret)
1759 return ret;
1760
1761 temp = i915_mch_val(dev_priv);
1762 chipset = i915_chipset_val(dev_priv);
1763 gfx = i915_gfx_val(dev_priv);
1764 mutex_unlock(&dev->struct_mutex);
1765
1766 seq_printf(m, "GMCH temp: %ld\n", temp);
1767 seq_printf(m, "Chipset power: %ld\n", chipset);
1768 seq_printf(m, "GFX power: %ld\n", gfx);
1769 seq_printf(m, "Total power: %ld\n", chipset + gfx);
1770
1771 return 0;
1772}
1773
1774static int i915_ring_freq_table(struct seq_file *m, void *unused)
1775{
1776 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1777 int ret = 0;
1778 int gpu_freq, ia_freq;
1779 unsigned int max_gpu_freq, min_gpu_freq;
1780
1781 if (!HAS_CORE_RING_FREQ(dev_priv)) {
1782 seq_puts(m, "unsupported on this chipset\n");
1783 return 0;
1784 }
1785
1786 intel_runtime_pm_get(dev_priv);
1787
1788 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1789 if (ret)
1790 goto out;
1791
1792 if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
1793 /* Convert GT frequency to 50 HZ units */
1794 min_gpu_freq =
1795 dev_priv->rps.min_freq_softlimit / GEN9_FREQ_SCALER;
1796 max_gpu_freq =
1797 dev_priv->rps.max_freq_softlimit / GEN9_FREQ_SCALER;
1798 } else {
1799 min_gpu_freq = dev_priv->rps.min_freq_softlimit;
1800 max_gpu_freq = dev_priv->rps.max_freq_softlimit;
1801 }
1802
1803 seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
1804
1805 for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
1806 ia_freq = gpu_freq;
1807 sandybridge_pcode_read(dev_priv,
1808 GEN6_PCODE_READ_MIN_FREQ_TABLE,
1809 &ia_freq);
1810 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
1811 intel_gpu_freq(dev_priv, (gpu_freq *
1812 (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ?
1813 GEN9_FREQ_SCALER : 1))),
1814 ((ia_freq >> 0) & 0xff) * 100,
1815 ((ia_freq >> 8) & 0xff) * 100);
1816 }
1817
1818 mutex_unlock(&dev_priv->rps.hw_lock);
1819
1820out:
1821 intel_runtime_pm_put(dev_priv);
1822 return ret;
1823}
1824
1825static int i915_opregion(struct seq_file *m, void *unused)
1826{
1827 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1828 struct drm_device *dev = &dev_priv->drm;
1829 struct intel_opregion *opregion = &dev_priv->opregion;
1830 int ret;
1831
1832 ret = mutex_lock_interruptible(&dev->struct_mutex);
1833 if (ret)
1834 goto out;
1835
1836 if (opregion->header)
1837 seq_write(m, opregion->header, OPREGION_SIZE);
1838
1839 mutex_unlock(&dev->struct_mutex);
1840
1841out:
1842 return 0;
1843}
1844
1845static int i915_vbt(struct seq_file *m, void *unused)
1846{
1847 struct intel_opregion *opregion = &node_to_i915(m->private)->opregion;
1848
1849 if (opregion->vbt)
1850 seq_write(m, opregion->vbt, opregion->vbt_size);
1851
1852 return 0;
1853}
1854
1855static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1856{
1857 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1858 struct drm_device *dev = &dev_priv->drm;
1859 struct intel_framebuffer *fbdev_fb = NULL;
1860 struct drm_framebuffer *drm_fb;
1861 int ret;
1862
1863 ret = mutex_lock_interruptible(&dev->struct_mutex);
1864 if (ret)
1865 return ret;
1866
1867#ifdef CONFIG_DRM_FBDEV_EMULATION
1868 if (dev_priv->fbdev) {
1869 fbdev_fb = to_intel_framebuffer(dev_priv->fbdev->helper.fb);
1870
1871 seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
1872 fbdev_fb->base.width,
1873 fbdev_fb->base.height,
1874 fbdev_fb->base.depth,
1875 fbdev_fb->base.bits_per_pixel,
1876 fbdev_fb->base.modifier[0],
1877 drm_framebuffer_read_refcount(&fbdev_fb->base));
1878 describe_obj(m, fbdev_fb->obj);
1879 seq_putc(m, '\n');
1880 }
1881#endif
1882
1883 mutex_lock(&dev->mode_config.fb_lock);
1884 drm_for_each_fb(drm_fb, dev) {
1885 struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
1886 if (fb == fbdev_fb)
1887 continue;
1888
1889 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
1890 fb->base.width,
1891 fb->base.height,
1892 fb->base.depth,
1893 fb->base.bits_per_pixel,
1894 fb->base.modifier[0],
1895 drm_framebuffer_read_refcount(&fb->base));
1896 describe_obj(m, fb->obj);
1897 seq_putc(m, '\n');
1898 }
1899 mutex_unlock(&dev->mode_config.fb_lock);
1900 mutex_unlock(&dev->struct_mutex);
1901
1902 return 0;
1903}
1904
1905static void describe_ctx_ring(struct seq_file *m, struct intel_ring *ring)
1906{
1907 seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, last head: %d)",
1908 ring->space, ring->head, ring->tail,
1909 ring->last_retired_head);
1910}
1911
1912static int i915_context_status(struct seq_file *m, void *unused)
1913{
1914 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1915 struct drm_device *dev = &dev_priv->drm;
1916 struct intel_engine_cs *engine;
1917 struct i915_gem_context *ctx;
1918 int ret;
1919
1920 ret = mutex_lock_interruptible(&dev->struct_mutex);
1921 if (ret)
1922 return ret;
1923
1924 list_for_each_entry(ctx, &dev_priv->context_list, link) {
1925 seq_printf(m, "HW context %u ", ctx->hw_id);
1926 if (ctx->pid) {
1927 struct task_struct *task;
1928
1929 task = get_pid_task(ctx->pid, PIDTYPE_PID);
1930 if (task) {
1931 seq_printf(m, "(%s [%d]) ",
1932 task->comm, task->pid);
1933 put_task_struct(task);
1934 }
1935 } else if (IS_ERR(ctx->file_priv)) {
1936 seq_puts(m, "(deleted) ");
1937 } else {
1938 seq_puts(m, "(kernel) ");
1939 }
1940
1941 seq_putc(m, ctx->remap_slice ? 'R' : 'r');
1942 seq_putc(m, '\n');
1943
1944 for_each_engine(engine, dev_priv) {
1945 struct intel_context *ce = &ctx->engine[engine->id];
1946
1947 seq_printf(m, "%s: ", engine->name);
1948 seq_putc(m, ce->initialised ? 'I' : 'i');
1949 if (ce->state)
1950 describe_obj(m, ce->state->obj);
1951 if (ce->ring)
1952 describe_ctx_ring(m, ce->ring);
1953 seq_putc(m, '\n');
1954 }
1955
1956 seq_putc(m, '\n');
1957 }
1958
1959 mutex_unlock(&dev->struct_mutex);
1960
1961 return 0;
1962}
1963
1964static void i915_dump_lrc_obj(struct seq_file *m,
1965 struct i915_gem_context *ctx,
1966 struct intel_engine_cs *engine)
1967{
1968 struct i915_vma *vma = ctx->engine[engine->id].state;
1969 struct page *page;
1970 int j;
1971
1972 seq_printf(m, "CONTEXT: %s %u\n", engine->name, ctx->hw_id);
1973
1974 if (!vma) {
1975 seq_puts(m, "\tFake context\n");
1976 return;
1977 }
1978
1979 if (vma->flags & I915_VMA_GLOBAL_BIND)
1980 seq_printf(m, "\tBound in GGTT at 0x%08x\n",
1981 i915_ggtt_offset(vma));
1982
1983 if (i915_gem_object_get_pages(vma->obj)) {
1984 seq_puts(m, "\tFailed to get pages for context object\n\n");
1985 return;
1986 }
1987
1988 page = i915_gem_object_get_page(vma->obj, LRC_STATE_PN);
1989 if (page) {
1990 u32 *reg_state = kmap_atomic(page);
1991
1992 for (j = 0; j < 0x600 / sizeof(u32) / 4; j += 4) {
1993 seq_printf(m,
1994 "\t[0x%04x] 0x%08x 0x%08x 0x%08x 0x%08x\n",
1995 j * 4,
1996 reg_state[j], reg_state[j + 1],
1997 reg_state[j + 2], reg_state[j + 3]);
1998 }
1999 kunmap_atomic(reg_state);
2000 }
2001
2002 seq_putc(m, '\n');
2003}
2004
2005static int i915_dump_lrc(struct seq_file *m, void *unused)
2006{
2007 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2008 struct drm_device *dev = &dev_priv->drm;
2009 struct intel_engine_cs *engine;
2010 struct i915_gem_context *ctx;
2011 int ret;
2012
2013 if (!i915.enable_execlists) {
2014 seq_printf(m, "Logical Ring Contexts are disabled\n");
2015 return 0;
2016 }
2017
2018 ret = mutex_lock_interruptible(&dev->struct_mutex);
2019 if (ret)
2020 return ret;
2021
2022 list_for_each_entry(ctx, &dev_priv->context_list, link)
2023 for_each_engine(engine, dev_priv)
2024 i915_dump_lrc_obj(m, ctx, engine);
2025
2026 mutex_unlock(&dev->struct_mutex);
2027
2028 return 0;
2029}
2030
2031static int i915_execlists(struct seq_file *m, void *data)
2032{
2033 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2034 struct drm_device *dev = &dev_priv->drm;
2035 struct intel_engine_cs *engine;
2036 u32 status_pointer;
2037 u8 read_pointer;
2038 u8 write_pointer;
2039 u32 status;
2040 u32 ctx_id;
2041 struct list_head *cursor;
2042 int i, ret;
2043
2044 if (!i915.enable_execlists) {
2045 seq_puts(m, "Logical Ring Contexts are disabled\n");
2046 return 0;
2047 }
2048
2049 ret = mutex_lock_interruptible(&dev->struct_mutex);
2050 if (ret)
2051 return ret;
2052
2053 intel_runtime_pm_get(dev_priv);
2054
2055 for_each_engine(engine, dev_priv) {
2056 struct drm_i915_gem_request *head_req = NULL;
2057 int count = 0;
2058
2059 seq_printf(m, "%s\n", engine->name);
2060
2061 status = I915_READ(RING_EXECLIST_STATUS_LO(engine));
2062 ctx_id = I915_READ(RING_EXECLIST_STATUS_HI(engine));
2063 seq_printf(m, "\tExeclist status: 0x%08X, context: %u\n",
2064 status, ctx_id);
2065
2066 status_pointer = I915_READ(RING_CONTEXT_STATUS_PTR(engine));
2067 seq_printf(m, "\tStatus pointer: 0x%08X\n", status_pointer);
2068
2069 read_pointer = engine->next_context_status_buffer;
2070 write_pointer = GEN8_CSB_WRITE_PTR(status_pointer);
2071 if (read_pointer > write_pointer)
2072 write_pointer += GEN8_CSB_ENTRIES;
2073 seq_printf(m, "\tRead pointer: 0x%08X, write pointer 0x%08X\n",
2074 read_pointer, write_pointer);
2075
2076 for (i = 0; i < GEN8_CSB_ENTRIES; i++) {
2077 status = I915_READ(RING_CONTEXT_STATUS_BUF_LO(engine, i));
2078 ctx_id = I915_READ(RING_CONTEXT_STATUS_BUF_HI(engine, i));
2079
2080 seq_printf(m, "\tStatus buffer %d: 0x%08X, context: %u\n",
2081 i, status, ctx_id);
2082 }
2083
2084 spin_lock_bh(&engine->execlist_lock);
2085 list_for_each(cursor, &engine->execlist_queue)
2086 count++;
2087 head_req = list_first_entry_or_null(&engine->execlist_queue,
2088 struct drm_i915_gem_request,
2089 execlist_link);
2090 spin_unlock_bh(&engine->execlist_lock);
2091
2092 seq_printf(m, "\t%d requests in queue\n", count);
2093 if (head_req) {
2094 seq_printf(m, "\tHead request context: %u\n",
2095 head_req->ctx->hw_id);
2096 seq_printf(m, "\tHead request tail: %u\n",
2097 head_req->tail);
2098 }
2099
2100 seq_putc(m, '\n');
2101 }
2102
2103 intel_runtime_pm_put(dev_priv);
2104 mutex_unlock(&dev->struct_mutex);
2105
2106 return 0;
2107}
2108
2109static const char *swizzle_string(unsigned swizzle)
2110{
2111 switch (swizzle) {
2112 case I915_BIT_6_SWIZZLE_NONE:
2113 return "none";
2114 case I915_BIT_6_SWIZZLE_9:
2115 return "bit9";
2116 case I915_BIT_6_SWIZZLE_9_10:
2117 return "bit9/bit10";
2118 case I915_BIT_6_SWIZZLE_9_11:
2119 return "bit9/bit11";
2120 case I915_BIT_6_SWIZZLE_9_10_11:
2121 return "bit9/bit10/bit11";
2122 case I915_BIT_6_SWIZZLE_9_17:
2123 return "bit9/bit17";
2124 case I915_BIT_6_SWIZZLE_9_10_17:
2125 return "bit9/bit10/bit17";
2126 case I915_BIT_6_SWIZZLE_UNKNOWN:
2127 return "unknown";
2128 }
2129
2130 return "bug";
2131}
2132
2133static int i915_swizzle_info(struct seq_file *m, void *data)
2134{
2135 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2136 struct drm_device *dev = &dev_priv->drm;
2137 int ret;
2138
2139 ret = mutex_lock_interruptible(&dev->struct_mutex);
2140 if (ret)
2141 return ret;
2142 intel_runtime_pm_get(dev_priv);
2143
2144 seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
2145 swizzle_string(dev_priv->mm.bit_6_swizzle_x));
2146 seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
2147 swizzle_string(dev_priv->mm.bit_6_swizzle_y));
2148
2149 if (IS_GEN3(dev_priv) || IS_GEN4(dev_priv)) {
2150 seq_printf(m, "DDC = 0x%08x\n",
2151 I915_READ(DCC));
2152 seq_printf(m, "DDC2 = 0x%08x\n",
2153 I915_READ(DCC2));
2154 seq_printf(m, "C0DRB3 = 0x%04x\n",
2155 I915_READ16(C0DRB3));
2156 seq_printf(m, "C1DRB3 = 0x%04x\n",
2157 I915_READ16(C1DRB3));
2158 } else if (INTEL_GEN(dev_priv) >= 6) {
2159 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
2160 I915_READ(MAD_DIMM_C0));
2161 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
2162 I915_READ(MAD_DIMM_C1));
2163 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
2164 I915_READ(MAD_DIMM_C2));
2165 seq_printf(m, "TILECTL = 0x%08x\n",
2166 I915_READ(TILECTL));
2167 if (INTEL_GEN(dev_priv) >= 8)
2168 seq_printf(m, "GAMTARBMODE = 0x%08x\n",
2169 I915_READ(GAMTARBMODE));
2170 else
2171 seq_printf(m, "ARB_MODE = 0x%08x\n",
2172 I915_READ(ARB_MODE));
2173 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
2174 I915_READ(DISP_ARB_CTL));
2175 }
2176
2177 if (dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES)
2178 seq_puts(m, "L-shaped memory detected\n");
2179
2180 intel_runtime_pm_put(dev_priv);
2181 mutex_unlock(&dev->struct_mutex);
2182
2183 return 0;
2184}
2185
2186static int per_file_ctx(int id, void *ptr, void *data)
2187{
2188 struct i915_gem_context *ctx = ptr;
2189 struct seq_file *m = data;
2190 struct i915_hw_ppgtt *ppgtt = ctx->ppgtt;
2191
2192 if (!ppgtt) {
2193 seq_printf(m, " no ppgtt for context %d\n",
2194 ctx->user_handle);
2195 return 0;
2196 }
2197
2198 if (i915_gem_context_is_default(ctx))
2199 seq_puts(m, " default context:\n");
2200 else
2201 seq_printf(m, " context %d:\n", ctx->user_handle);
2202 ppgtt->debug_dump(ppgtt, m);
2203
2204 return 0;
2205}
2206
2207static void gen8_ppgtt_info(struct seq_file *m,
2208 struct drm_i915_private *dev_priv)
2209{
2210 struct intel_engine_cs *engine;
2211 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
2212 int i;
2213
2214 if (!ppgtt)
2215 return;
2216
2217 for_each_engine(engine, dev_priv) {
2218 seq_printf(m, "%s\n", engine->name);
2219 for (i = 0; i < 4; i++) {
2220 u64 pdp = I915_READ(GEN8_RING_PDP_UDW(engine, i));
2221 pdp <<= 32;
2222 pdp |= I915_READ(GEN8_RING_PDP_LDW(engine, i));
2223 seq_printf(m, "\tPDP%d 0x%016llx\n", i, pdp);
2224 }
2225 }
2226}
2227
2228static void gen6_ppgtt_info(struct seq_file *m,
2229 struct drm_i915_private *dev_priv)
2230{
2231 struct intel_engine_cs *engine;
2232
2233 if (IS_GEN6(dev_priv))
2234 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
2235
2236 for_each_engine(engine, dev_priv) {
2237 seq_printf(m, "%s\n", engine->name);
2238 if (IS_GEN7(dev_priv))
2239 seq_printf(m, "GFX_MODE: 0x%08x\n",
2240 I915_READ(RING_MODE_GEN7(engine)));
2241 seq_printf(m, "PP_DIR_BASE: 0x%08x\n",
2242 I915_READ(RING_PP_DIR_BASE(engine)));
2243 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n",
2244 I915_READ(RING_PP_DIR_BASE_READ(engine)));
2245 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n",
2246 I915_READ(RING_PP_DIR_DCLV(engine)));
2247 }
2248 if (dev_priv->mm.aliasing_ppgtt) {
2249 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
2250
2251 seq_puts(m, "aliasing PPGTT:\n");
2252 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd.base.ggtt_offset);
2253
2254 ppgtt->debug_dump(ppgtt, m);
2255 }
2256
2257 seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
2258}
2259
2260static int i915_ppgtt_info(struct seq_file *m, void *data)
2261{
2262 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2263 struct drm_device *dev = &dev_priv->drm;
2264 struct drm_file *file;
2265 int ret;
2266
2267 mutex_lock(&dev->filelist_mutex);
2268 ret = mutex_lock_interruptible(&dev->struct_mutex);
2269 if (ret)
2270 goto out_unlock;
2271
2272 intel_runtime_pm_get(dev_priv);
2273
2274 if (INTEL_GEN(dev_priv) >= 8)
2275 gen8_ppgtt_info(m, dev_priv);
2276 else if (INTEL_GEN(dev_priv) >= 6)
2277 gen6_ppgtt_info(m, dev_priv);
2278
2279 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
2280 struct drm_i915_file_private *file_priv = file->driver_priv;
2281 struct task_struct *task;
2282
2283 task = get_pid_task(file->pid, PIDTYPE_PID);
2284 if (!task) {
2285 ret = -ESRCH;
2286 goto out_rpm;
2287 }
2288 seq_printf(m, "\nproc: %s\n", task->comm);
2289 put_task_struct(task);
2290 idr_for_each(&file_priv->context_idr, per_file_ctx,
2291 (void *)(unsigned long)m);
2292 }
2293
2294out_rpm:
2295 intel_runtime_pm_put(dev_priv);
2296 mutex_unlock(&dev->struct_mutex);
2297out_unlock:
2298 mutex_unlock(&dev->filelist_mutex);
2299 return ret;
2300}
2301
2302static int count_irq_waiters(struct drm_i915_private *i915)
2303{
2304 struct intel_engine_cs *engine;
2305 int count = 0;
2306
2307 for_each_engine(engine, i915)
2308 count += intel_engine_has_waiter(engine);
2309
2310 return count;
2311}
2312
2313static const char *rps_power_to_str(unsigned int power)
2314{
2315 static const char * const strings[] = {
2316 [LOW_POWER] = "low power",
2317 [BETWEEN] = "mixed",
2318 [HIGH_POWER] = "high power",
2319 };
2320
2321 if (power >= ARRAY_SIZE(strings) || !strings[power])
2322 return "unknown";
2323
2324 return strings[power];
2325}
2326
2327static int i915_rps_boost_info(struct seq_file *m, void *data)
2328{
2329 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2330 struct drm_device *dev = &dev_priv->drm;
2331 struct drm_file *file;
2332
2333 seq_printf(m, "RPS enabled? %d\n", dev_priv->rps.enabled);
2334 seq_printf(m, "GPU busy? %s [%x]\n",
2335 yesno(dev_priv->gt.awake), dev_priv->gt.active_engines);
2336 seq_printf(m, "CPU waiting? %d\n", count_irq_waiters(dev_priv));
2337 seq_printf(m, "Frequency requested %d\n",
2338 intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq));
2339 seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n",
2340 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq),
2341 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit),
2342 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit),
2343 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
2344 seq_printf(m, " idle:%d, efficient:%d, boost:%d\n",
2345 intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq),
2346 intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq),
2347 intel_gpu_freq(dev_priv, dev_priv->rps.boost_freq));
2348
2349 mutex_lock(&dev->filelist_mutex);
2350 spin_lock(&dev_priv->rps.client_lock);
2351 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
2352 struct drm_i915_file_private *file_priv = file->driver_priv;
2353 struct task_struct *task;
2354
2355 rcu_read_lock();
2356 task = pid_task(file->pid, PIDTYPE_PID);
2357 seq_printf(m, "%s [%d]: %d boosts%s\n",
2358 task ? task->comm : "<unknown>",
2359 task ? task->pid : -1,
2360 file_priv->rps.boosts,
2361 list_empty(&file_priv->rps.link) ? "" : ", active");
2362 rcu_read_unlock();
2363 }
2364 seq_printf(m, "Kernel (anonymous) boosts: %d\n", dev_priv->rps.boosts);
2365 spin_unlock(&dev_priv->rps.client_lock);
2366 mutex_unlock(&dev->filelist_mutex);
2367
2368 if (INTEL_GEN(dev_priv) >= 6 &&
2369 dev_priv->rps.enabled &&
2370 dev_priv->gt.active_engines) {
2371 u32 rpup, rpupei;
2372 u32 rpdown, rpdownei;
2373
2374 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
2375 rpup = I915_READ_FW(GEN6_RP_CUR_UP) & GEN6_RP_EI_MASK;
2376 rpupei = I915_READ_FW(GEN6_RP_CUR_UP_EI) & GEN6_RP_EI_MASK;
2377 rpdown = I915_READ_FW(GEN6_RP_CUR_DOWN) & GEN6_RP_EI_MASK;
2378 rpdownei = I915_READ_FW(GEN6_RP_CUR_DOWN_EI) & GEN6_RP_EI_MASK;
2379 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
2380
2381 seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
2382 rps_power_to_str(dev_priv->rps.power));
2383 seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n",
2384 100 * rpup / rpupei,
2385 dev_priv->rps.up_threshold);
2386 seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n",
2387 100 * rpdown / rpdownei,
2388 dev_priv->rps.down_threshold);
2389 } else {
2390 seq_puts(m, "\nRPS Autotuning inactive\n");
2391 }
2392
2393 return 0;
2394}
2395
2396static int i915_llc(struct seq_file *m, void *data)
2397{
2398 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2399 const bool edram = INTEL_GEN(dev_priv) > 8;
2400
2401 seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(dev_priv)));
2402 seq_printf(m, "%s: %lluMB\n", edram ? "eDRAM" : "eLLC",
2403 intel_uncore_edram_size(dev_priv)/1024/1024);
2404
2405 return 0;
2406}
2407
2408static int i915_guc_load_status_info(struct seq_file *m, void *data)
2409{
2410 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2411 struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw;
2412 u32 tmp, i;
2413
2414 if (!HAS_GUC_UCODE(dev_priv))
2415 return 0;
2416
2417 seq_printf(m, "GuC firmware status:\n");
2418 seq_printf(m, "\tpath: %s\n",
2419 guc_fw->guc_fw_path);
2420 seq_printf(m, "\tfetch: %s\n",
2421 intel_guc_fw_status_repr(guc_fw->guc_fw_fetch_status));
2422 seq_printf(m, "\tload: %s\n",
2423 intel_guc_fw_status_repr(guc_fw->guc_fw_load_status));
2424 seq_printf(m, "\tversion wanted: %d.%d\n",
2425 guc_fw->guc_fw_major_wanted, guc_fw->guc_fw_minor_wanted);
2426 seq_printf(m, "\tversion found: %d.%d\n",
2427 guc_fw->guc_fw_major_found, guc_fw->guc_fw_minor_found);
2428 seq_printf(m, "\theader: offset is %d; size = %d\n",
2429 guc_fw->header_offset, guc_fw->header_size);
2430 seq_printf(m, "\tuCode: offset is %d; size = %d\n",
2431 guc_fw->ucode_offset, guc_fw->ucode_size);
2432 seq_printf(m, "\tRSA: offset is %d; size = %d\n",
2433 guc_fw->rsa_offset, guc_fw->rsa_size);
2434
2435 tmp = I915_READ(GUC_STATUS);
2436
2437 seq_printf(m, "\nGuC status 0x%08x:\n", tmp);
2438 seq_printf(m, "\tBootrom status = 0x%x\n",
2439 (tmp & GS_BOOTROM_MASK) >> GS_BOOTROM_SHIFT);
2440 seq_printf(m, "\tuKernel status = 0x%x\n",
2441 (tmp & GS_UKERNEL_MASK) >> GS_UKERNEL_SHIFT);
2442 seq_printf(m, "\tMIA Core status = 0x%x\n",
2443 (tmp & GS_MIA_MASK) >> GS_MIA_SHIFT);
2444 seq_puts(m, "\nScratch registers:\n");
2445 for (i = 0; i < 16; i++)
2446 seq_printf(m, "\t%2d: \t0x%x\n", i, I915_READ(SOFT_SCRATCH(i)));
2447
2448 return 0;
2449}
2450
2451static void i915_guc_client_info(struct seq_file *m,
2452 struct drm_i915_private *dev_priv,
2453 struct i915_guc_client *client)
2454{
2455 struct intel_engine_cs *engine;
2456 enum intel_engine_id id;
2457 uint64_t tot = 0;
2458
2459 seq_printf(m, "\tPriority %d, GuC ctx index: %u, PD offset 0x%x\n",
2460 client->priority, client->ctx_index, client->proc_desc_offset);
2461 seq_printf(m, "\tDoorbell id %d, offset: 0x%x, cookie 0x%x\n",
2462 client->doorbell_id, client->doorbell_offset, client->cookie);
2463 seq_printf(m, "\tWQ size %d, offset: 0x%x, tail %d\n",
2464 client->wq_size, client->wq_offset, client->wq_tail);
2465
2466 seq_printf(m, "\tWork queue full: %u\n", client->no_wq_space);
2467 seq_printf(m, "\tFailed doorbell: %u\n", client->b_fail);
2468 seq_printf(m, "\tLast submission result: %d\n", client->retcode);
2469
2470 for_each_engine_id(engine, dev_priv, id) {
2471 u64 submissions = client->submissions[id];
2472 tot += submissions;
2473 seq_printf(m, "\tSubmissions: %llu %s\n",
2474 submissions, engine->name);
2475 }
2476 seq_printf(m, "\tTotal: %llu\n", tot);
2477}
2478
2479static int i915_guc_info(struct seq_file *m, void *data)
2480{
2481 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2482 struct drm_device *dev = &dev_priv->drm;
2483 struct intel_guc guc;
2484 struct i915_guc_client client = {};
2485 struct intel_engine_cs *engine;
2486 enum intel_engine_id id;
2487 u64 total = 0;
2488
2489 if (!HAS_GUC_SCHED(dev_priv))
2490 return 0;
2491
2492 if (mutex_lock_interruptible(&dev->struct_mutex))
2493 return 0;
2494
2495 /* Take a local copy of the GuC data, so we can dump it at leisure */
2496 guc = dev_priv->guc;
2497 if (guc.execbuf_client)
2498 client = *guc.execbuf_client;
2499
2500 mutex_unlock(&dev->struct_mutex);
2501
2502 seq_printf(m, "Doorbell map:\n");
2503 seq_printf(m, "\t%*pb\n", GUC_MAX_DOORBELLS, guc.doorbell_bitmap);
2504 seq_printf(m, "Doorbell next cacheline: 0x%x\n\n", guc.db_cacheline);
2505
2506 seq_printf(m, "GuC total action count: %llu\n", guc.action_count);
2507 seq_printf(m, "GuC action failure count: %u\n", guc.action_fail);
2508 seq_printf(m, "GuC last action command: 0x%x\n", guc.action_cmd);
2509 seq_printf(m, "GuC last action status: 0x%x\n", guc.action_status);
2510 seq_printf(m, "GuC last action error code: %d\n", guc.action_err);
2511
2512 seq_printf(m, "\nGuC submissions:\n");
2513 for_each_engine_id(engine, dev_priv, id) {
2514 u64 submissions = guc.submissions[id];
2515 total += submissions;
2516 seq_printf(m, "\t%-24s: %10llu, last seqno 0x%08x\n",
2517 engine->name, submissions, guc.last_seqno[id]);
2518 }
2519 seq_printf(m, "\t%s: %llu\n", "Total", total);
2520
2521 seq_printf(m, "\nGuC execbuf client @ %p:\n", guc.execbuf_client);
2522 i915_guc_client_info(m, dev_priv, &client);
2523
2524 /* Add more as required ... */
2525
2526 return 0;
2527}
2528
2529static int i915_guc_log_dump(struct seq_file *m, void *data)
2530{
2531 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2532 struct drm_i915_gem_object *obj;
2533 int i = 0, pg;
2534
2535 if (!dev_priv->guc.log_vma)
2536 return 0;
2537
2538 obj = dev_priv->guc.log_vma->obj;
2539 for (pg = 0; pg < obj->base.size / PAGE_SIZE; pg++) {
2540 u32 *log = kmap_atomic(i915_gem_object_get_page(obj, pg));
2541
2542 for (i = 0; i < PAGE_SIZE / sizeof(u32); i += 4)
2543 seq_printf(m, "0x%08x 0x%08x 0x%08x 0x%08x\n",
2544 *(log + i), *(log + i + 1),
2545 *(log + i + 2), *(log + i + 3));
2546
2547 kunmap_atomic(log);
2548 }
2549
2550 seq_putc(m, '\n');
2551
2552 return 0;
2553}
2554
2555static int i915_edp_psr_status(struct seq_file *m, void *data)
2556{
2557 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2558 u32 psrperf = 0;
2559 u32 stat[3];
2560 enum pipe pipe;
2561 bool enabled = false;
2562
2563 if (!HAS_PSR(dev_priv)) {
2564 seq_puts(m, "PSR not supported\n");
2565 return 0;
2566 }
2567
2568 intel_runtime_pm_get(dev_priv);
2569
2570 mutex_lock(&dev_priv->psr.lock);
2571 seq_printf(m, "Sink_Support: %s\n", yesno(dev_priv->psr.sink_support));
2572 seq_printf(m, "Source_OK: %s\n", yesno(dev_priv->psr.source_ok));
2573 seq_printf(m, "Enabled: %s\n", yesno((bool)dev_priv->psr.enabled));
2574 seq_printf(m, "Active: %s\n", yesno(dev_priv->psr.active));
2575 seq_printf(m, "Busy frontbuffer bits: 0x%03x\n",
2576 dev_priv->psr.busy_frontbuffer_bits);
2577 seq_printf(m, "Re-enable work scheduled: %s\n",
2578 yesno(work_busy(&dev_priv->psr.work.work)));
2579
2580 if (HAS_DDI(dev_priv))
2581 enabled = I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE;
2582 else {
2583 for_each_pipe(dev_priv, pipe) {
2584 stat[pipe] = I915_READ(VLV_PSRSTAT(pipe)) &
2585 VLV_EDP_PSR_CURR_STATE_MASK;
2586 if ((stat[pipe] == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
2587 (stat[pipe] == VLV_EDP_PSR_ACTIVE_SF_UPDATE))
2588 enabled = true;
2589 }
2590 }
2591
2592 seq_printf(m, "Main link in standby mode: %s\n",
2593 yesno(dev_priv->psr.link_standby));
2594
2595 seq_printf(m, "HW Enabled & Active bit: %s", yesno(enabled));
2596
2597 if (!HAS_DDI(dev_priv))
2598 for_each_pipe(dev_priv, pipe) {
2599 if ((stat[pipe] == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
2600 (stat[pipe] == VLV_EDP_PSR_ACTIVE_SF_UPDATE))
2601 seq_printf(m, " pipe %c", pipe_name(pipe));
2602 }
2603 seq_puts(m, "\n");
2604
2605 /*
2606 * VLV/CHV PSR has no kind of performance counter
2607 * SKL+ Perf counter is reset to 0 everytime DC state is entered
2608 */
2609 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2610 psrperf = I915_READ(EDP_PSR_PERF_CNT) &
2611 EDP_PSR_PERF_CNT_MASK;
2612
2613 seq_printf(m, "Performance_Counter: %u\n", psrperf);
2614 }
2615 mutex_unlock(&dev_priv->psr.lock);
2616
2617 intel_runtime_pm_put(dev_priv);
2618 return 0;
2619}
2620
2621static int i915_sink_crc(struct seq_file *m, void *data)
2622{
2623 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2624 struct drm_device *dev = &dev_priv->drm;
2625 struct intel_connector *connector;
2626 struct intel_dp *intel_dp = NULL;
2627 int ret;
2628 u8 crc[6];
2629
2630 drm_modeset_lock_all(dev);
2631 for_each_intel_connector(dev, connector) {
2632 struct drm_crtc *crtc;
2633
2634 if (!connector->base.state->best_encoder)
2635 continue;
2636
2637 crtc = connector->base.state->crtc;
2638 if (!crtc->state->active)
2639 continue;
2640
2641 if (connector->base.connector_type != DRM_MODE_CONNECTOR_eDP)
2642 continue;
2643
2644 intel_dp = enc_to_intel_dp(connector->base.state->best_encoder);
2645
2646 ret = intel_dp_sink_crc(intel_dp, crc);
2647 if (ret)
2648 goto out;
2649
2650 seq_printf(m, "%02x%02x%02x%02x%02x%02x\n",
2651 crc[0], crc[1], crc[2],
2652 crc[3], crc[4], crc[5]);
2653 goto out;
2654 }
2655 ret = -ENODEV;
2656out:
2657 drm_modeset_unlock_all(dev);
2658 return ret;
2659}
2660
2661static int i915_energy_uJ(struct seq_file *m, void *data)
2662{
2663 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2664 u64 power;
2665 u32 units;
2666
2667 if (INTEL_GEN(dev_priv) < 6)
2668 return -ENODEV;
2669
2670 intel_runtime_pm_get(dev_priv);
2671
2672 rdmsrl(MSR_RAPL_POWER_UNIT, power);
2673 power = (power & 0x1f00) >> 8;
2674 units = 1000000 / (1 << power); /* convert to uJ */
2675 power = I915_READ(MCH_SECP_NRG_STTS);
2676 power *= units;
2677
2678 intel_runtime_pm_put(dev_priv);
2679
2680 seq_printf(m, "%llu", (long long unsigned)power);
2681
2682 return 0;
2683}
2684
2685static int i915_runtime_pm_status(struct seq_file *m, void *unused)
2686{
2687 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2688 struct pci_dev *pdev = dev_priv->drm.pdev;
2689
2690 if (!HAS_RUNTIME_PM(dev_priv))
2691 seq_puts(m, "Runtime power management not supported\n");
2692
2693 seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->gt.awake));
2694 seq_printf(m, "IRQs disabled: %s\n",
2695 yesno(!intel_irqs_enabled(dev_priv)));
2696#ifdef CONFIG_PM
2697 seq_printf(m, "Usage count: %d\n",
2698 atomic_read(&dev_priv->drm.dev->power.usage_count));
2699#else
2700 seq_printf(m, "Device Power Management (CONFIG_PM) disabled\n");
2701#endif
2702 seq_printf(m, "PCI device power state: %s [%d]\n",
2703 pci_power_name(pdev->current_state),
2704 pdev->current_state);
2705
2706 return 0;
2707}
2708
2709static int i915_power_domain_info(struct seq_file *m, void *unused)
2710{
2711 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2712 struct i915_power_domains *power_domains = &dev_priv->power_domains;
2713 int i;
2714
2715 mutex_lock(&power_domains->lock);
2716
2717 seq_printf(m, "%-25s %s\n", "Power well/domain", "Use count");
2718 for (i = 0; i < power_domains->power_well_count; i++) {
2719 struct i915_power_well *power_well;
2720 enum intel_display_power_domain power_domain;
2721
2722 power_well = &power_domains->power_wells[i];
2723 seq_printf(m, "%-25s %d\n", power_well->name,
2724 power_well->count);
2725
2726 for (power_domain = 0; power_domain < POWER_DOMAIN_NUM;
2727 power_domain++) {
2728 if (!(BIT(power_domain) & power_well->domains))
2729 continue;
2730
2731 seq_printf(m, " %-23s %d\n",
2732 intel_display_power_domain_str(power_domain),
2733 power_domains->domain_use_count[power_domain]);
2734 }
2735 }
2736
2737 mutex_unlock(&power_domains->lock);
2738
2739 return 0;
2740}
2741
2742static int i915_dmc_info(struct seq_file *m, void *unused)
2743{
2744 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2745 struct intel_csr *csr;
2746
2747 if (!HAS_CSR(dev_priv)) {
2748 seq_puts(m, "not supported\n");
2749 return 0;
2750 }
2751
2752 csr = &dev_priv->csr;
2753
2754 intel_runtime_pm_get(dev_priv);
2755
2756 seq_printf(m, "fw loaded: %s\n", yesno(csr->dmc_payload != NULL));
2757 seq_printf(m, "path: %s\n", csr->fw_path);
2758
2759 if (!csr->dmc_payload)
2760 goto out;
2761
2762 seq_printf(m, "version: %d.%d\n", CSR_VERSION_MAJOR(csr->version),
2763 CSR_VERSION_MINOR(csr->version));
2764
2765 if (IS_SKYLAKE(dev_priv) && csr->version >= CSR_VERSION(1, 6)) {
2766 seq_printf(m, "DC3 -> DC5 count: %d\n",
2767 I915_READ(SKL_CSR_DC3_DC5_COUNT));
2768 seq_printf(m, "DC5 -> DC6 count: %d\n",
2769 I915_READ(SKL_CSR_DC5_DC6_COUNT));
2770 } else if (IS_BROXTON(dev_priv) && csr->version >= CSR_VERSION(1, 4)) {
2771 seq_printf(m, "DC3 -> DC5 count: %d\n",
2772 I915_READ(BXT_CSR_DC3_DC5_COUNT));
2773 }
2774
2775out:
2776 seq_printf(m, "program base: 0x%08x\n", I915_READ(CSR_PROGRAM(0)));
2777 seq_printf(m, "ssp base: 0x%08x\n", I915_READ(CSR_SSP_BASE));
2778 seq_printf(m, "htp: 0x%08x\n", I915_READ(CSR_HTP_SKL));
2779
2780 intel_runtime_pm_put(dev_priv);
2781
2782 return 0;
2783}
2784
2785static void intel_seq_print_mode(struct seq_file *m, int tabs,
2786 struct drm_display_mode *mode)
2787{
2788 int i;
2789
2790 for (i = 0; i < tabs; i++)
2791 seq_putc(m, '\t');
2792
2793 seq_printf(m, "id %d:\"%s\" freq %d clock %d hdisp %d hss %d hse %d htot %d vdisp %d vss %d vse %d vtot %d type 0x%x flags 0x%x\n",
2794 mode->base.id, mode->name,
2795 mode->vrefresh, mode->clock,
2796 mode->hdisplay, mode->hsync_start,
2797 mode->hsync_end, mode->htotal,
2798 mode->vdisplay, mode->vsync_start,
2799 mode->vsync_end, mode->vtotal,
2800 mode->type, mode->flags);
2801}
2802
2803static void intel_encoder_info(struct seq_file *m,
2804 struct intel_crtc *intel_crtc,
2805 struct intel_encoder *intel_encoder)
2806{
2807 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2808 struct drm_device *dev = &dev_priv->drm;
2809 struct drm_crtc *crtc = &intel_crtc->base;
2810 struct intel_connector *intel_connector;
2811 struct drm_encoder *encoder;
2812
2813 encoder = &intel_encoder->base;
2814 seq_printf(m, "\tencoder %d: type: %s, connectors:\n",
2815 encoder->base.id, encoder->name);
2816 for_each_connector_on_encoder(dev, encoder, intel_connector) {
2817 struct drm_connector *connector = &intel_connector->base;
2818 seq_printf(m, "\t\tconnector %d: type: %s, status: %s",
2819 connector->base.id,
2820 connector->name,
2821 drm_get_connector_status_name(connector->status));
2822 if (connector->status == connector_status_connected) {
2823 struct drm_display_mode *mode = &crtc->mode;
2824 seq_printf(m, ", mode:\n");
2825 intel_seq_print_mode(m, 2, mode);
2826 } else {
2827 seq_putc(m, '\n');
2828 }
2829 }
2830}
2831
2832static void intel_crtc_info(struct seq_file *m, struct intel_crtc *intel_crtc)
2833{
2834 struct drm_i915_private *dev_priv = node_to_i915(m->private);
2835 struct drm_device *dev = &dev_priv->drm;
2836 struct drm_crtc *crtc = &intel_crtc->base;
2837 struct intel_encoder *intel_encoder;
2838 struct drm_plane_state *plane_state = crtc->primary->state;
2839 struct drm_framebuffer *fb = plane_state->fb;
2840
2841 if (fb)
2842 seq_printf(m, "\tfb: %d, pos: %dx%d, size: %dx%d\n",
2843 fb->base.id, plane_state->src_x >> 16,
2844 plane_state->src_y >> 16, fb->width, fb->height);
2845 else
2846 seq_puts(m, "\tprimary plane disabled\n");
2847 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
2848 intel_encoder_info(m, intel_crtc, intel_encoder);
2849}
2850
2851static void intel_panel_info(struct seq_file *m, struct intel_panel *panel)
2852{
2853 struct drm_display_mode *mode = panel->fixed_mode;
2854
2855 seq_printf(m, "\tfixed mode:\n");
2856 intel_seq_print_mode(m, 2, mode);
2857}
2858
2859static void intel_dp_info(struct seq_file *m,
2860 struct intel_connector *intel_connector)
2861{
2862 struct intel_encoder *intel_encoder = intel_connector->encoder;
2863 struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
2864
2865 seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]);
2866 seq_printf(m, "\taudio support: %s\n", yesno(intel_dp->has_audio));
2867 if (intel_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)
2868 intel_panel_info(m, &intel_connector->panel);
2869}
2870
2871static void intel_hdmi_info(struct seq_file *m,
2872 struct intel_connector *intel_connector)
2873{
2874 struct intel_encoder *intel_encoder = intel_connector->encoder;
2875 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&intel_encoder->base);
2876
2877 seq_printf(m, "\taudio support: %s\n", yesno(intel_hdmi->has_audio));
2878}
2879
2880static void intel_lvds_info(struct seq_file *m,
2881 struct intel_connector *intel_connector)
2882{
2883 intel_panel_info(m, &intel_connector->panel);
2884}
2885
2886static void intel_connector_info(struct seq_file *m,
2887 struct drm_connector *connector)
2888{
2889 struct intel_connector *intel_connector = to_intel_connector(connector);
2890 struct intel_encoder *intel_encoder = intel_connector->encoder;
2891 struct drm_display_mode *mode;
2892
2893 seq_printf(m, "connector %d: type %s, status: %s\n",
2894 connector->base.id, connector->name,
2895 drm_get_connector_status_name(connector->status));
2896 if (connector->status == connector_status_connected) {
2897 seq_printf(m, "\tname: %s\n", connector->display_info.name);
2898 seq_printf(m, "\tphysical dimensions: %dx%dmm\n",
2899 connector->display_info.width_mm,
2900 connector->display_info.height_mm);
2901 seq_printf(m, "\tsubpixel order: %s\n",
2902 drm_get_subpixel_order_name(connector->display_info.subpixel_order));
2903 seq_printf(m, "\tCEA rev: %d\n",
2904 connector->display_info.cea_rev);
2905 }
2906
2907 if (!intel_encoder || intel_encoder->type == INTEL_OUTPUT_DP_MST)
2908 return;
2909
2910 switch (connector->connector_type) {
2911 case DRM_MODE_CONNECTOR_DisplayPort:
2912 case DRM_MODE_CONNECTOR_eDP:
2913 intel_dp_info(m, intel_connector);
2914 break;
2915 case DRM_MODE_CONNECTOR_LVDS:
2916 if (intel_encoder->type == INTEL_OUTPUT_LVDS)
2917 intel_lvds_info(m, intel_connector);
2918 break;
2919 case DRM_MODE_CONNECTOR_HDMIA:
2920 if (intel_encoder->type == INTEL_OUTPUT_HDMI ||
2921 intel_encoder->type == INTEL_OUTPUT_UNKNOWN)
2922 intel_hdmi_info(m, intel_connector);
2923 break;
2924 default:
2925 break;
2926 }
2927
2928 seq_printf(m, "\tmodes:\n");
2929 list_for_each_entry(mode, &connector->modes, head)
2930 intel_seq_print_mode(m, 2, mode);
2931}
2932
2933static bool cursor_active(struct drm_i915_private *dev_priv, int pipe)
2934{
2935 u32 state;
2936
2937 if (IS_845G(dev_priv) || IS_I865G(dev_priv))
2938 state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
2939 else
2940 state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
2941
2942 return state;
2943}
2944
2945static bool cursor_position(struct drm_i915_private *dev_priv,
2946 int pipe, int *x, int *y)
2947{
2948 u32 pos;
2949
2950 pos = I915_READ(CURPOS(pipe));
2951
2952 *x = (pos >> CURSOR_X_SHIFT) & CURSOR_POS_MASK;
2953 if (pos & (CURSOR_POS_SIGN << CURSOR_X_SHIFT))
2954 *x = -*x;
2955
2956 *y = (pos >> CURSOR_Y_SHIFT) & CURSOR_POS_MASK;
2957 if (pos & (CURSOR_POS_SIGN << CURSOR_Y_SHIFT))
2958 *y = -*y;
2959
2960 return cursor_active(dev_priv, pipe);
2961}
2962
2963static const char *plane_type(enum drm_plane_type type)
2964{
2965 switch (type) {
2966 case DRM_PLANE_TYPE_OVERLAY:
2967 return "OVL";
2968 case DRM_PLANE_TYPE_PRIMARY:
2969 return "PRI";
2970 case DRM_PLANE_TYPE_CURSOR:
2971 return "CUR";
2972 /*
2973 * Deliberately omitting default: to generate compiler warnings
2974 * when a new drm_plane_type gets added.
2975 */
2976 }
2977
2978 return "unknown";
2979}
2980
2981static const char *plane_rotation(unsigned int rotation)
2982{
2983 static char buf[48];
2984 /*
2985 * According to doc only one DRM_ROTATE_ is allowed but this
2986 * will print them all to visualize if the values are misused
2987 */
2988 snprintf(buf, sizeof(buf),
2989 "%s%s%s%s%s%s(0x%08x)",
2990 (rotation & DRM_ROTATE_0) ? "0 " : "",
2991 (rotation & DRM_ROTATE_90) ? "90 " : "",
2992 (rotation & DRM_ROTATE_180) ? "180 " : "",
2993 (rotation & DRM_ROTATE_270) ? "270 " : "",
2994 (rotation & DRM_REFLECT_X) ? "FLIPX " : "",
2995 (rotation & DRM_REFLECT_Y) ? "FLIPY " : "",
2996 rotation);
2997
2998 return buf;
2999}
3000
3001static void intel_plane_info(struct seq_file *m, struct intel_crtc *intel_crtc)
3002{
3003 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3004 struct drm_device *dev = &dev_priv->drm;
3005 struct intel_plane *intel_plane;
3006
3007 for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
3008 struct drm_plane_state *state;
3009 struct drm_plane *plane = &intel_plane->base;
3010
3011 if (!plane->state) {
3012 seq_puts(m, "plane->state is NULL!\n");
3013 continue;
3014 }
3015
3016 state = plane->state;
3017
3018 seq_printf(m, "\t--Plane id %d: type=%s, crtc_pos=%4dx%4d, crtc_size=%4dx%4d, src_pos=%d.%04ux%d.%04u, src_size=%d.%04ux%d.%04u, format=%s, rotation=%s\n",
3019 plane->base.id,
3020 plane_type(intel_plane->base.type),
3021 state->crtc_x, state->crtc_y,
3022 state->crtc_w, state->crtc_h,
3023 (state->src_x >> 16),
3024 ((state->src_x & 0xffff) * 15625) >> 10,
3025 (state->src_y >> 16),
3026 ((state->src_y & 0xffff) * 15625) >> 10,
3027 (state->src_w >> 16),
3028 ((state->src_w & 0xffff) * 15625) >> 10,
3029 (state->src_h >> 16),
3030 ((state->src_h & 0xffff) * 15625) >> 10,
3031 state->fb ? drm_get_format_name(state->fb->pixel_format) : "N/A",
3032 plane_rotation(state->rotation));
3033 }
3034}
3035
3036static void intel_scaler_info(struct seq_file *m, struct intel_crtc *intel_crtc)
3037{
3038 struct intel_crtc_state *pipe_config;
3039 int num_scalers = intel_crtc->num_scalers;
3040 int i;
3041
3042 pipe_config = to_intel_crtc_state(intel_crtc->base.state);
3043
3044 /* Not all platformas have a scaler */
3045 if (num_scalers) {
3046 seq_printf(m, "\tnum_scalers=%d, scaler_users=%x scaler_id=%d",
3047 num_scalers,
3048 pipe_config->scaler_state.scaler_users,
3049 pipe_config->scaler_state.scaler_id);
3050
3051 for (i = 0; i < SKL_NUM_SCALERS; i++) {
3052 struct intel_scaler *sc =
3053 &pipe_config->scaler_state.scalers[i];
3054
3055 seq_printf(m, ", scalers[%d]: use=%s, mode=%x",
3056 i, yesno(sc->in_use), sc->mode);
3057 }
3058 seq_puts(m, "\n");
3059 } else {
3060 seq_puts(m, "\tNo scalers available on this platform\n");
3061 }
3062}
3063
3064static int i915_display_info(struct seq_file *m, void *unused)
3065{
3066 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3067 struct drm_device *dev = &dev_priv->drm;
3068 struct intel_crtc *crtc;
3069 struct drm_connector *connector;
3070
3071 intel_runtime_pm_get(dev_priv);
3072 drm_modeset_lock_all(dev);
3073 seq_printf(m, "CRTC info\n");
3074 seq_printf(m, "---------\n");
3075 for_each_intel_crtc(dev, crtc) {
3076 bool active;
3077 struct intel_crtc_state *pipe_config;
3078 int x, y;
3079
3080 pipe_config = to_intel_crtc_state(crtc->base.state);
3081
3082 seq_printf(m, "CRTC %d: pipe: %c, active=%s, (size=%dx%d), dither=%s, bpp=%d\n",
3083 crtc->base.base.id, pipe_name(crtc->pipe),
3084 yesno(pipe_config->base.active),
3085 pipe_config->pipe_src_w, pipe_config->pipe_src_h,
3086 yesno(pipe_config->dither), pipe_config->pipe_bpp);
3087
3088 if (pipe_config->base.active) {
3089 intel_crtc_info(m, crtc);
3090
3091 active = cursor_position(dev_priv, crtc->pipe, &x, &y);
3092 seq_printf(m, "\tcursor visible? %s, position (%d, %d), size %dx%d, addr 0x%08x, active? %s\n",
3093 yesno(crtc->cursor_base),
3094 x, y, crtc->base.cursor->state->crtc_w,
3095 crtc->base.cursor->state->crtc_h,
3096 crtc->cursor_addr, yesno(active));
3097 intel_scaler_info(m, crtc);
3098 intel_plane_info(m, crtc);
3099 }
3100
3101 seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s \n",
3102 yesno(!crtc->cpu_fifo_underrun_disabled),
3103 yesno(!crtc->pch_fifo_underrun_disabled));
3104 }
3105
3106 seq_printf(m, "\n");
3107 seq_printf(m, "Connector info\n");
3108 seq_printf(m, "--------------\n");
3109 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
3110 intel_connector_info(m, connector);
3111 }
3112 drm_modeset_unlock_all(dev);
3113 intel_runtime_pm_put(dev_priv);
3114
3115 return 0;
3116}
3117
3118static int i915_semaphore_status(struct seq_file *m, void *unused)
3119{
3120 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3121 struct drm_device *dev = &dev_priv->drm;
3122 struct intel_engine_cs *engine;
3123 int num_rings = INTEL_INFO(dev_priv)->num_rings;
3124 enum intel_engine_id id;
3125 int j, ret;
3126
3127 if (!i915.semaphores) {
3128 seq_puts(m, "Semaphores are disabled\n");
3129 return 0;
3130 }
3131
3132 ret = mutex_lock_interruptible(&dev->struct_mutex);
3133 if (ret)
3134 return ret;
3135 intel_runtime_pm_get(dev_priv);
3136
3137 if (IS_BROADWELL(dev_priv)) {
3138 struct page *page;
3139 uint64_t *seqno;
3140
3141 page = i915_gem_object_get_page(dev_priv->semaphore->obj, 0);
3142
3143 seqno = (uint64_t *)kmap_atomic(page);
3144 for_each_engine_id(engine, dev_priv, id) {
3145 uint64_t offset;
3146
3147 seq_printf(m, "%s\n", engine->name);
3148
3149 seq_puts(m, " Last signal:");
3150 for (j = 0; j < num_rings; j++) {
3151 offset = id * I915_NUM_ENGINES + j;
3152 seq_printf(m, "0x%08llx (0x%02llx) ",
3153 seqno[offset], offset * 8);
3154 }
3155 seq_putc(m, '\n');
3156
3157 seq_puts(m, " Last wait: ");
3158 for (j = 0; j < num_rings; j++) {
3159 offset = id + (j * I915_NUM_ENGINES);
3160 seq_printf(m, "0x%08llx (0x%02llx) ",
3161 seqno[offset], offset * 8);
3162 }
3163 seq_putc(m, '\n');
3164
3165 }
3166 kunmap_atomic(seqno);
3167 } else {
3168 seq_puts(m, " Last signal:");
3169 for_each_engine(engine, dev_priv)
3170 for (j = 0; j < num_rings; j++)
3171 seq_printf(m, "0x%08x\n",
3172 I915_READ(engine->semaphore.mbox.signal[j]));
3173 seq_putc(m, '\n');
3174 }
3175
3176 seq_puts(m, "\nSync seqno:\n");
3177 for_each_engine(engine, dev_priv) {
3178 for (j = 0; j < num_rings; j++)
3179 seq_printf(m, " 0x%08x ",
3180 engine->semaphore.sync_seqno[j]);
3181 seq_putc(m, '\n');
3182 }
3183 seq_putc(m, '\n');
3184
3185 intel_runtime_pm_put(dev_priv);
3186 mutex_unlock(&dev->struct_mutex);
3187 return 0;
3188}
3189
3190static int i915_shared_dplls_info(struct seq_file *m, void *unused)
3191{
3192 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3193 struct drm_device *dev = &dev_priv->drm;
3194 int i;
3195
3196 drm_modeset_lock_all(dev);
3197 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
3198 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
3199
3200 seq_printf(m, "DPLL%i: %s, id: %i\n", i, pll->name, pll->id);
3201 seq_printf(m, " crtc_mask: 0x%08x, active: 0x%x, on: %s\n",
3202 pll->config.crtc_mask, pll->active_mask, yesno(pll->on));
3203 seq_printf(m, " tracked hardware state:\n");
3204 seq_printf(m, " dpll: 0x%08x\n", pll->config.hw_state.dpll);
3205 seq_printf(m, " dpll_md: 0x%08x\n",
3206 pll->config.hw_state.dpll_md);
3207 seq_printf(m, " fp0: 0x%08x\n", pll->config.hw_state.fp0);
3208 seq_printf(m, " fp1: 0x%08x\n", pll->config.hw_state.fp1);
3209 seq_printf(m, " wrpll: 0x%08x\n", pll->config.hw_state.wrpll);
3210 }
3211 drm_modeset_unlock_all(dev);
3212
3213 return 0;
3214}
3215
3216static int i915_wa_registers(struct seq_file *m, void *unused)
3217{
3218 int i;
3219 int ret;
3220 struct intel_engine_cs *engine;
3221 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3222 struct drm_device *dev = &dev_priv->drm;
3223 struct i915_workarounds *workarounds = &dev_priv->workarounds;
3224 enum intel_engine_id id;
3225
3226 ret = mutex_lock_interruptible(&dev->struct_mutex);
3227 if (ret)
3228 return ret;
3229
3230 intel_runtime_pm_get(dev_priv);
3231
3232 seq_printf(m, "Workarounds applied: %d\n", workarounds->count);
3233 for_each_engine_id(engine, dev_priv, id)
3234 seq_printf(m, "HW whitelist count for %s: %d\n",
3235 engine->name, workarounds->hw_whitelist_count[id]);
3236 for (i = 0; i < workarounds->count; ++i) {
3237 i915_reg_t addr;
3238 u32 mask, value, read;
3239 bool ok;
3240
3241 addr = workarounds->reg[i].addr;
3242 mask = workarounds->reg[i].mask;
3243 value = workarounds->reg[i].value;
3244 read = I915_READ(addr);
3245 ok = (value & mask) == (read & mask);
3246 seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X, read: 0x%08x, status: %s\n",
3247 i915_mmio_reg_offset(addr), value, mask, read, ok ? "OK" : "FAIL");
3248 }
3249
3250 intel_runtime_pm_put(dev_priv);
3251 mutex_unlock(&dev->struct_mutex);
3252
3253 return 0;
3254}
3255
3256static int i915_ddb_info(struct seq_file *m, void *unused)
3257{
3258 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3259 struct drm_device *dev = &dev_priv->drm;
3260 struct skl_ddb_allocation *ddb;
3261 struct skl_ddb_entry *entry;
3262 enum pipe pipe;
3263 int plane;
3264
3265 if (INTEL_GEN(dev_priv) < 9)
3266 return 0;
3267
3268 drm_modeset_lock_all(dev);
3269
3270 ddb = &dev_priv->wm.skl_hw.ddb;
3271
3272 seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");
3273
3274 for_each_pipe(dev_priv, pipe) {
3275 seq_printf(m, "Pipe %c\n", pipe_name(pipe));
3276
3277 for_each_plane(dev_priv, pipe, plane) {
3278 entry = &ddb->plane[pipe][plane];
3279 seq_printf(m, " Plane%-8d%8u%8u%8u\n", plane + 1,
3280 entry->start, entry->end,
3281 skl_ddb_entry_size(entry));
3282 }
3283
3284 entry = &ddb->plane[pipe][PLANE_CURSOR];
3285 seq_printf(m, " %-13s%8u%8u%8u\n", "Cursor", entry->start,
3286 entry->end, skl_ddb_entry_size(entry));
3287 }
3288
3289 drm_modeset_unlock_all(dev);
3290
3291 return 0;
3292}
3293
3294static void drrs_status_per_crtc(struct seq_file *m,
3295 struct drm_device *dev,
3296 struct intel_crtc *intel_crtc)
3297{
3298 struct drm_i915_private *dev_priv = to_i915(dev);
3299 struct i915_drrs *drrs = &dev_priv->drrs;
3300 int vrefresh = 0;
3301 struct drm_connector *connector;
3302
3303 drm_for_each_connector(connector, dev) {
3304 if (connector->state->crtc != &intel_crtc->base)
3305 continue;
3306
3307 seq_printf(m, "%s:\n", connector->name);
3308 }
3309
3310 if (dev_priv->vbt.drrs_type == STATIC_DRRS_SUPPORT)
3311 seq_puts(m, "\tVBT: DRRS_type: Static");
3312 else if (dev_priv->vbt.drrs_type == SEAMLESS_DRRS_SUPPORT)
3313 seq_puts(m, "\tVBT: DRRS_type: Seamless");
3314 else if (dev_priv->vbt.drrs_type == DRRS_NOT_SUPPORTED)
3315 seq_puts(m, "\tVBT: DRRS_type: None");
3316 else
3317 seq_puts(m, "\tVBT: DRRS_type: FIXME: Unrecognized Value");
3318
3319 seq_puts(m, "\n\n");
3320
3321 if (to_intel_crtc_state(intel_crtc->base.state)->has_drrs) {
3322 struct intel_panel *panel;
3323
3324 mutex_lock(&drrs->mutex);
3325 /* DRRS Supported */
3326 seq_puts(m, "\tDRRS Supported: Yes\n");
3327
3328 /* disable_drrs() will make drrs->dp NULL */
3329 if (!drrs->dp) {
3330 seq_puts(m, "Idleness DRRS: Disabled");
3331 mutex_unlock(&drrs->mutex);
3332 return;
3333 }
3334
3335 panel = &drrs->dp->attached_connector->panel;
3336 seq_printf(m, "\t\tBusy_frontbuffer_bits: 0x%X",
3337 drrs->busy_frontbuffer_bits);
3338
3339 seq_puts(m, "\n\t\t");
3340 if (drrs->refresh_rate_type == DRRS_HIGH_RR) {
3341 seq_puts(m, "DRRS_State: DRRS_HIGH_RR\n");
3342 vrefresh = panel->fixed_mode->vrefresh;
3343 } else if (drrs->refresh_rate_type == DRRS_LOW_RR) {
3344 seq_puts(m, "DRRS_State: DRRS_LOW_RR\n");
3345 vrefresh = panel->downclock_mode->vrefresh;
3346 } else {
3347 seq_printf(m, "DRRS_State: Unknown(%d)\n",
3348 drrs->refresh_rate_type);
3349 mutex_unlock(&drrs->mutex);
3350 return;
3351 }
3352 seq_printf(m, "\t\tVrefresh: %d", vrefresh);
3353
3354 seq_puts(m, "\n\t\t");
3355 mutex_unlock(&drrs->mutex);
3356 } else {
3357 /* DRRS not supported. Print the VBT parameter*/
3358 seq_puts(m, "\tDRRS Supported : No");
3359 }
3360 seq_puts(m, "\n");
3361}
3362
3363static int i915_drrs_status(struct seq_file *m, void *unused)
3364{
3365 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3366 struct drm_device *dev = &dev_priv->drm;
3367 struct intel_crtc *intel_crtc;
3368 int active_crtc_cnt = 0;
3369
3370 drm_modeset_lock_all(dev);
3371 for_each_intel_crtc(dev, intel_crtc) {
3372 if (intel_crtc->base.state->active) {
3373 active_crtc_cnt++;
3374 seq_printf(m, "\nCRTC %d: ", active_crtc_cnt);
3375
3376 drrs_status_per_crtc(m, dev, intel_crtc);
3377 }
3378 }
3379 drm_modeset_unlock_all(dev);
3380
3381 if (!active_crtc_cnt)
3382 seq_puts(m, "No active crtc found\n");
3383
3384 return 0;
3385}
3386
3387struct pipe_crc_info {
3388 const char *name;
3389 struct drm_i915_private *dev_priv;
3390 enum pipe pipe;
3391};
3392
3393static int i915_dp_mst_info(struct seq_file *m, void *unused)
3394{
3395 struct drm_i915_private *dev_priv = node_to_i915(m->private);
3396 struct drm_device *dev = &dev_priv->drm;
3397 struct intel_encoder *intel_encoder;
3398 struct intel_digital_port *intel_dig_port;
3399 struct drm_connector *connector;
3400
3401 drm_modeset_lock_all(dev);
3402 drm_for_each_connector(connector, dev) {
3403 if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
3404 continue;
3405
3406 intel_encoder = intel_attached_encoder(connector);
3407 if (!intel_encoder || intel_encoder->type == INTEL_OUTPUT_DP_MST)
3408 continue;
3409
3410 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
3411 if (!intel_dig_port->dp.can_mst)
3412 continue;
3413
3414 seq_printf(m, "MST Source Port %c\n",
3415 port_name(intel_dig_port->port));
3416 drm_dp_mst_dump_topology(m, &intel_dig_port->dp.mst_mgr);
3417 }
3418 drm_modeset_unlock_all(dev);
3419 return 0;
3420}
3421
3422static int i915_pipe_crc_open(struct inode *inode, struct file *filep)
3423{
3424 struct pipe_crc_info *info = inode->i_private;
3425 struct drm_i915_private *dev_priv = info->dev_priv;
3426 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
3427
3428 if (info->pipe >= INTEL_INFO(dev_priv)->num_pipes)
3429 return -ENODEV;
3430
3431 spin_lock_irq(&pipe_crc->lock);
3432
3433 if (pipe_crc->opened) {
3434 spin_unlock_irq(&pipe_crc->lock);
3435 return -EBUSY; /* already open */
3436 }
3437
3438 pipe_crc->opened = true;
3439 filep->private_data = inode->i_private;
3440
3441 spin_unlock_irq(&pipe_crc->lock);
3442
3443 return 0;
3444}
3445
3446static int i915_pipe_crc_release(struct inode *inode, struct file *filep)
3447{
3448 struct pipe_crc_info *info = inode->i_private;
3449 struct drm_i915_private *dev_priv = info->dev_priv;
3450 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
3451
3452 spin_lock_irq(&pipe_crc->lock);
3453 pipe_crc->opened = false;
3454 spin_unlock_irq(&pipe_crc->lock);
3455
3456 return 0;
3457}
3458
3459/* (6 fields, 8 chars each, space separated (5) + '\n') */
3460#define PIPE_CRC_LINE_LEN (6 * 8 + 5 + 1)
3461/* account for \'0' */
3462#define PIPE_CRC_BUFFER_LEN (PIPE_CRC_LINE_LEN + 1)
3463
3464static int pipe_crc_data_count(struct intel_pipe_crc *pipe_crc)
3465{
3466 assert_spin_locked(&pipe_crc->lock);
3467 return CIRC_CNT(pipe_crc->head, pipe_crc->tail,
3468 INTEL_PIPE_CRC_ENTRIES_NR);
3469}
3470
3471static ssize_t
3472i915_pipe_crc_read(struct file *filep, char __user *user_buf, size_t count,
3473 loff_t *pos)
3474{
3475 struct pipe_crc_info *info = filep->private_data;
3476 struct drm_i915_private *dev_priv = info->dev_priv;
3477 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
3478 char buf[PIPE_CRC_BUFFER_LEN];
3479 int n_entries;
3480 ssize_t bytes_read;
3481
3482 /*
3483 * Don't allow user space to provide buffers not big enough to hold
3484 * a line of data.
3485 */
3486 if (count < PIPE_CRC_LINE_LEN)
3487 return -EINVAL;
3488
3489 if (pipe_crc->source == INTEL_PIPE_CRC_SOURCE_NONE)
3490 return 0;
3491
3492 /* nothing to read */
3493 spin_lock_irq(&pipe_crc->lock);
3494 while (pipe_crc_data_count(pipe_crc) == 0) {
3495 int ret;
3496
3497 if (filep->f_flags & O_NONBLOCK) {
3498 spin_unlock_irq(&pipe_crc->lock);
3499 return -EAGAIN;
3500 }
3501
3502 ret = wait_event_interruptible_lock_irq(pipe_crc->wq,
3503 pipe_crc_data_count(pipe_crc), pipe_crc->lock);
3504 if (ret) {
3505 spin_unlock_irq(&pipe_crc->lock);
3506 return ret;
3507 }
3508 }
3509
3510 /* We now have one or more entries to read */
3511 n_entries = count / PIPE_CRC_LINE_LEN;
3512
3513 bytes_read = 0;
3514 while (n_entries > 0) {
3515 struct intel_pipe_crc_entry *entry =
3516 &pipe_crc->entries[pipe_crc->tail];
3517
3518 if (CIRC_CNT(pipe_crc->head, pipe_crc->tail,
3519 INTEL_PIPE_CRC_ENTRIES_NR) < 1)
3520 break;
3521
3522 BUILD_BUG_ON_NOT_POWER_OF_2(INTEL_PIPE_CRC_ENTRIES_NR);
3523 pipe_crc->tail = (pipe_crc->tail + 1) & (INTEL_PIPE_CRC_ENTRIES_NR - 1);
3524
3525 bytes_read += snprintf(buf, PIPE_CRC_BUFFER_LEN,
3526 "%8u %8x %8x %8x %8x %8x\n",
3527 entry->frame, entry->crc[0],
3528 entry->crc[1], entry->crc[2],
3529 entry->crc[3], entry->crc[4]);
3530
3531 spin_unlock_irq(&pipe_crc->lock);
3532
3533 if (copy_to_user(user_buf, buf, PIPE_CRC_LINE_LEN))
3534 return -EFAULT;
3535
3536 user_buf += PIPE_CRC_LINE_LEN;
3537 n_entries--;
3538
3539 spin_lock_irq(&pipe_crc->lock);
3540 }
3541
3542 spin_unlock_irq(&pipe_crc->lock);
3543
3544 return bytes_read;
3545}
3546
3547static const struct file_operations i915_pipe_crc_fops = {
3548 .owner = THIS_MODULE,
3549 .open = i915_pipe_crc_open,
3550 .read = i915_pipe_crc_read,
3551 .release = i915_pipe_crc_release,
3552};
3553
3554static struct pipe_crc_info i915_pipe_crc_data[I915_MAX_PIPES] = {
3555 {
3556 .name = "i915_pipe_A_crc",
3557 .pipe = PIPE_A,
3558 },
3559 {
3560 .name = "i915_pipe_B_crc",
3561 .pipe = PIPE_B,
3562 },
3563 {
3564 .name = "i915_pipe_C_crc",
3565 .pipe = PIPE_C,
3566 },
3567};
3568
3569static int i915_pipe_crc_create(struct dentry *root, struct drm_minor *minor,
3570 enum pipe pipe)
3571{
3572 struct drm_i915_private *dev_priv = to_i915(minor->dev);
3573 struct dentry *ent;
3574 struct pipe_crc_info *info = &i915_pipe_crc_data[pipe];
3575
3576 info->dev_priv = dev_priv;
3577 ent = debugfs_create_file(info->name, S_IRUGO, root, info,
3578 &i915_pipe_crc_fops);
3579 if (!ent)
3580 return -ENOMEM;
3581
3582 return drm_add_fake_info_node(minor, ent, info);
3583}
3584
3585static const char * const pipe_crc_sources[] = {
3586 "none",
3587 "plane1",
3588 "plane2",
3589 "pf",
3590 "pipe",
3591 "TV",
3592 "DP-B",
3593 "DP-C",
3594 "DP-D",
3595 "auto",
3596};
3597
3598static const char *pipe_crc_source_name(enum intel_pipe_crc_source source)
3599{
3600 BUILD_BUG_ON(ARRAY_SIZE(pipe_crc_sources) != INTEL_PIPE_CRC_SOURCE_MAX);
3601 return pipe_crc_sources[source];
3602}
3603
3604static int display_crc_ctl_show(struct seq_file *m, void *data)
3605{
3606 struct drm_i915_private *dev_priv = m->private;
3607 int i;
3608
3609 for (i = 0; i < I915_MAX_PIPES; i++)
3610 seq_printf(m, "%c %s\n", pipe_name(i),
3611 pipe_crc_source_name(dev_priv->pipe_crc[i].source));
3612
3613 return 0;
3614}
3615
3616static int display_crc_ctl_open(struct inode *inode, struct file *file)
3617{
3618 return single_open(file, display_crc_ctl_show, inode->i_private);
3619}
3620
3621static int i8xx_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
3622 uint32_t *val)
3623{
3624 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
3625 *source = INTEL_PIPE_CRC_SOURCE_PIPE;
3626
3627 switch (*source) {
3628 case INTEL_PIPE_CRC_SOURCE_PIPE:
3629 *val = PIPE_CRC_ENABLE | PIPE_CRC_INCLUDE_BORDER_I8XX;
3630 break;
3631 case INTEL_PIPE_CRC_SOURCE_NONE:
3632 *val = 0;
3633 break;
3634 default:
3635 return -EINVAL;
3636 }
3637
3638 return 0;
3639}
3640
3641static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
3642 enum pipe pipe,
3643 enum intel_pipe_crc_source *source)
3644{
3645 struct drm_device *dev = &dev_priv->drm;
3646 struct intel_encoder *encoder;
3647 struct intel_crtc *crtc;
3648 struct intel_digital_port *dig_port;
3649 int ret = 0;
3650
3651 *source = INTEL_PIPE_CRC_SOURCE_PIPE;
3652
3653 drm_modeset_lock_all(dev);
3654 for_each_intel_encoder(dev, encoder) {
3655 if (!encoder->base.crtc)
3656 continue;
3657
3658 crtc = to_intel_crtc(encoder->base.crtc);
3659
3660 if (crtc->pipe != pipe)
3661 continue;
3662
3663 switch (encoder->type) {
3664 case INTEL_OUTPUT_TVOUT:
3665 *source = INTEL_PIPE_CRC_SOURCE_TV;
3666 break;
3667 case INTEL_OUTPUT_DP:
3668 case INTEL_OUTPUT_EDP:
3669 dig_port = enc_to_dig_port(&encoder->base);
3670 switch (dig_port->port) {
3671 case PORT_B:
3672 *source = INTEL_PIPE_CRC_SOURCE_DP_B;
3673 break;
3674 case PORT_C:
3675 *source = INTEL_PIPE_CRC_SOURCE_DP_C;
3676 break;
3677 case PORT_D:
3678 *source = INTEL_PIPE_CRC_SOURCE_DP_D;
3679 break;
3680 default:
3681 WARN(1, "nonexisting DP port %c\n",
3682 port_name(dig_port->port));
3683 break;
3684 }
3685 break;
3686 default:
3687 break;
3688 }
3689 }
3690 drm_modeset_unlock_all(dev);
3691
3692 return ret;
3693}
3694
3695static int vlv_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
3696 enum pipe pipe,
3697 enum intel_pipe_crc_source *source,
3698 uint32_t *val)
3699{
3700 bool need_stable_symbols = false;
3701
3702 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
3703 int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
3704 if (ret)
3705 return ret;
3706 }
3707
3708 switch (*source) {
3709 case INTEL_PIPE_CRC_SOURCE_PIPE:
3710 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_VLV;
3711 break;
3712 case INTEL_PIPE_CRC_SOURCE_DP_B:
3713 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_VLV;
3714 need_stable_symbols = true;
3715 break;
3716 case INTEL_PIPE_CRC_SOURCE_DP_C:
3717 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_VLV;
3718 need_stable_symbols = true;
3719 break;
3720 case INTEL_PIPE_CRC_SOURCE_DP_D:
3721 if (!IS_CHERRYVIEW(dev_priv))
3722 return -EINVAL;
3723 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_VLV;
3724 need_stable_symbols = true;
3725 break;
3726 case INTEL_PIPE_CRC_SOURCE_NONE:
3727 *val = 0;
3728 break;
3729 default:
3730 return -EINVAL;
3731 }
3732
3733 /*
3734 * When the pipe CRC tap point is after the transcoders we need
3735 * to tweak symbol-level features to produce a deterministic series of
3736 * symbols for a given frame. We need to reset those features only once
3737 * a frame (instead of every nth symbol):
3738 * - DC-balance: used to ensure a better clock recovery from the data
3739 * link (SDVO)
3740 * - DisplayPort scrambling: used for EMI reduction
3741 */
3742 if (need_stable_symbols) {
3743 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3744
3745 tmp |= DC_BALANCE_RESET_VLV;
3746 switch (pipe) {
3747 case PIPE_A:
3748 tmp |= PIPE_A_SCRAMBLE_RESET;
3749 break;
3750 case PIPE_B:
3751 tmp |= PIPE_B_SCRAMBLE_RESET;
3752 break;
3753 case PIPE_C:
3754 tmp |= PIPE_C_SCRAMBLE_RESET;
3755 break;
3756 default:
3757 return -EINVAL;
3758 }
3759 I915_WRITE(PORT_DFT2_G4X, tmp);
3760 }
3761
3762 return 0;
3763}
3764
3765static int i9xx_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
3766 enum pipe pipe,
3767 enum intel_pipe_crc_source *source,
3768 uint32_t *val)
3769{
3770 bool need_stable_symbols = false;
3771
3772 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
3773 int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
3774 if (ret)
3775 return ret;
3776 }
3777
3778 switch (*source) {
3779 case INTEL_PIPE_CRC_SOURCE_PIPE:
3780 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_I9XX;
3781 break;
3782 case INTEL_PIPE_CRC_SOURCE_TV:
3783 if (!SUPPORTS_TV(dev_priv))
3784 return -EINVAL;
3785 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_TV_PRE;
3786 break;
3787 case INTEL_PIPE_CRC_SOURCE_DP_B:
3788 if (!IS_G4X(dev_priv))
3789 return -EINVAL;
3790 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_G4X;
3791 need_stable_symbols = true;
3792 break;
3793 case INTEL_PIPE_CRC_SOURCE_DP_C:
3794 if (!IS_G4X(dev_priv))
3795 return -EINVAL;
3796 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_G4X;
3797 need_stable_symbols = true;
3798 break;
3799 case INTEL_PIPE_CRC_SOURCE_DP_D:
3800 if (!IS_G4X(dev_priv))
3801 return -EINVAL;
3802 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_G4X;
3803 need_stable_symbols = true;
3804 break;
3805 case INTEL_PIPE_CRC_SOURCE_NONE:
3806 *val = 0;
3807 break;
3808 default:
3809 return -EINVAL;
3810 }
3811
3812 /*
3813 * When the pipe CRC tap point is after the transcoders we need
3814 * to tweak symbol-level features to produce a deterministic series of
3815 * symbols for a given frame. We need to reset those features only once
3816 * a frame (instead of every nth symbol):
3817 * - DC-balance: used to ensure a better clock recovery from the data
3818 * link (SDVO)
3819 * - DisplayPort scrambling: used for EMI reduction
3820 */
3821 if (need_stable_symbols) {
3822 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3823
3824 WARN_ON(!IS_G4X(dev_priv));
3825
3826 I915_WRITE(PORT_DFT_I9XX,
3827 I915_READ(PORT_DFT_I9XX) | DC_BALANCE_RESET);
3828
3829 if (pipe == PIPE_A)
3830 tmp |= PIPE_A_SCRAMBLE_RESET;
3831 else
3832 tmp |= PIPE_B_SCRAMBLE_RESET;
3833
3834 I915_WRITE(PORT_DFT2_G4X, tmp);
3835 }
3836
3837 return 0;
3838}
3839
3840static void vlv_undo_pipe_scramble_reset(struct drm_i915_private *dev_priv,
3841 enum pipe pipe)
3842{
3843 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3844
3845 switch (pipe) {
3846 case PIPE_A:
3847 tmp &= ~PIPE_A_SCRAMBLE_RESET;
3848 break;
3849 case PIPE_B:
3850 tmp &= ~PIPE_B_SCRAMBLE_RESET;
3851 break;
3852 case PIPE_C:
3853 tmp &= ~PIPE_C_SCRAMBLE_RESET;
3854 break;
3855 default:
3856 return;
3857 }
3858 if (!(tmp & PIPE_SCRAMBLE_RESET_MASK))
3859 tmp &= ~DC_BALANCE_RESET_VLV;
3860 I915_WRITE(PORT_DFT2_G4X, tmp);
3861
3862}
3863
3864static void g4x_undo_pipe_scramble_reset(struct drm_i915_private *dev_priv,
3865 enum pipe pipe)
3866{
3867 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3868
3869 if (pipe == PIPE_A)
3870 tmp &= ~PIPE_A_SCRAMBLE_RESET;
3871 else
3872 tmp &= ~PIPE_B_SCRAMBLE_RESET;
3873 I915_WRITE(PORT_DFT2_G4X, tmp);
3874
3875 if (!(tmp & PIPE_SCRAMBLE_RESET_MASK)) {
3876 I915_WRITE(PORT_DFT_I9XX,
3877 I915_READ(PORT_DFT_I9XX) & ~DC_BALANCE_RESET);
3878 }
3879}
3880
3881static int ilk_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
3882 uint32_t *val)
3883{
3884 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
3885 *source = INTEL_PIPE_CRC_SOURCE_PIPE;
3886
3887 switch (*source) {
3888 case INTEL_PIPE_CRC_SOURCE_PLANE1:
3889 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_ILK;
3890 break;
3891 case INTEL_PIPE_CRC_SOURCE_PLANE2:
3892 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_ILK;
3893 break;
3894 case INTEL_PIPE_CRC_SOURCE_PIPE:
3895 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_ILK;
3896 break;
3897 case INTEL_PIPE_CRC_SOURCE_NONE:
3898 *val = 0;
3899 break;
3900 default:
3901 return -EINVAL;
3902 }
3903
3904 return 0;
3905}
3906
3907static void hsw_trans_edp_pipe_A_crc_wa(struct drm_i915_private *dev_priv,
3908 bool enable)
3909{
3910 struct drm_device *dev = &dev_priv->drm;
3911 struct intel_crtc *crtc =
3912 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[PIPE_A]);
3913 struct intel_crtc_state *pipe_config;
3914 struct drm_atomic_state *state;
3915 int ret = 0;
3916
3917 drm_modeset_lock_all(dev);
3918 state = drm_atomic_state_alloc(dev);
3919 if (!state) {
3920 ret = -ENOMEM;
3921 goto out;
3922 }
3923
3924 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(&crtc->base);
3925 pipe_config = intel_atomic_get_crtc_state(state, crtc);
3926 if (IS_ERR(pipe_config)) {
3927 ret = PTR_ERR(pipe_config);
3928 goto out;
3929 }
3930
3931 pipe_config->pch_pfit.force_thru = enable;
3932 if (pipe_config->cpu_transcoder == TRANSCODER_EDP &&
3933 pipe_config->pch_pfit.enabled != enable)
3934 pipe_config->base.connectors_changed = true;
3935
3936 ret = drm_atomic_commit(state);
3937out:
3938 drm_modeset_unlock_all(dev);
3939 WARN(ret, "Toggling workaround to %i returns %i\n", enable, ret);
3940 if (ret)
3941 drm_atomic_state_free(state);
3942}
3943
3944static int ivb_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
3945 enum pipe pipe,
3946 enum intel_pipe_crc_source *source,
3947 uint32_t *val)
3948{
3949 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
3950 *source = INTEL_PIPE_CRC_SOURCE_PF;
3951
3952 switch (*source) {
3953 case INTEL_PIPE_CRC_SOURCE_PLANE1:
3954 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_IVB;
3955 break;
3956 case INTEL_PIPE_CRC_SOURCE_PLANE2:
3957 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_IVB;
3958 break;
3959 case INTEL_PIPE_CRC_SOURCE_PF:
3960 if (IS_HASWELL(dev_priv) && pipe == PIPE_A)
3961 hsw_trans_edp_pipe_A_crc_wa(dev_priv, true);
3962
3963 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PF_IVB;
3964 break;
3965 case INTEL_PIPE_CRC_SOURCE_NONE:
3966 *val = 0;
3967 break;
3968 default:
3969 return -EINVAL;
3970 }
3971
3972 return 0;
3973}
3974
3975static int pipe_crc_set_source(struct drm_i915_private *dev_priv,
3976 enum pipe pipe,
3977 enum intel_pipe_crc_source source)
3978{
3979 struct drm_device *dev = &dev_priv->drm;
3980 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
3981 struct intel_crtc *crtc =
3982 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
3983 enum intel_display_power_domain power_domain;
3984 u32 val = 0; /* shut up gcc */
3985 int ret;
3986
3987 if (pipe_crc->source == source)
3988 return 0;
3989
3990 /* forbid changing the source without going back to 'none' */
3991 if (pipe_crc->source && source)
3992 return -EINVAL;
3993
3994 power_domain = POWER_DOMAIN_PIPE(pipe);
3995 if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) {
3996 DRM_DEBUG_KMS("Trying to capture CRC while pipe is off\n");
3997 return -EIO;
3998 }
3999
4000 if (IS_GEN2(dev_priv))
4001 ret = i8xx_pipe_crc_ctl_reg(&source, &val);
4002 else if (INTEL_GEN(dev_priv) < 5)
4003 ret = i9xx_pipe_crc_ctl_reg(dev_priv, pipe, &source, &val);
4004 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
4005 ret = vlv_pipe_crc_ctl_reg(dev_priv, pipe, &source, &val);
4006 else if (IS_GEN5(dev_priv) || IS_GEN6(dev_priv))
4007 ret = ilk_pipe_crc_ctl_reg(&source, &val);
4008 else
4009 ret = ivb_pipe_crc_ctl_reg(dev_priv, pipe, &source, &val);
4010
4011 if (ret != 0)
4012 goto out;
4013
4014 /* none -> real source transition */
4015 if (source) {
4016 struct intel_pipe_crc_entry *entries;
4017
4018 DRM_DEBUG_DRIVER("collecting CRCs for pipe %c, %s\n",
4019 pipe_name(pipe), pipe_crc_source_name(source));
4020
4021 entries = kcalloc(INTEL_PIPE_CRC_ENTRIES_NR,
4022 sizeof(pipe_crc->entries[0]),
4023 GFP_KERNEL);
4024 if (!entries) {
4025 ret = -ENOMEM;
4026 goto out;
4027 }
4028
4029 /*
4030 * When IPS gets enabled, the pipe CRC changes. Since IPS gets
4031 * enabled and disabled dynamically based on package C states,
4032 * user space can't make reliable use of the CRCs, so let's just
4033 * completely disable it.
4034 */
4035 hsw_disable_ips(crtc);
4036
4037 spin_lock_irq(&pipe_crc->lock);
4038 kfree(pipe_crc->entries);
4039 pipe_crc->entries = entries;
4040 pipe_crc->head = 0;
4041 pipe_crc->tail = 0;
4042 spin_unlock_irq(&pipe_crc->lock);
4043 }
4044
4045 pipe_crc->source = source;
4046
4047 I915_WRITE(PIPE_CRC_CTL(pipe), val);
4048 POSTING_READ(PIPE_CRC_CTL(pipe));
4049
4050 /* real source -> none transition */
4051 if (source == INTEL_PIPE_CRC_SOURCE_NONE) {
4052 struct intel_pipe_crc_entry *entries;
4053 struct intel_crtc *crtc =
4054 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
4055
4056 DRM_DEBUG_DRIVER("stopping CRCs for pipe %c\n",
4057 pipe_name(pipe));
4058
4059 drm_modeset_lock(&crtc->base.mutex, NULL);
4060 if (crtc->base.state->active)
4061 intel_wait_for_vblank(dev, pipe);
4062 drm_modeset_unlock(&crtc->base.mutex);
4063
4064 spin_lock_irq(&pipe_crc->lock);
4065 entries = pipe_crc->entries;
4066 pipe_crc->entries = NULL;
4067 pipe_crc->head = 0;
4068 pipe_crc->tail = 0;
4069 spin_unlock_irq(&pipe_crc->lock);
4070
4071 kfree(entries);
4072
4073 if (IS_G4X(dev_priv))
4074 g4x_undo_pipe_scramble_reset(dev_priv, pipe);
4075 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
4076 vlv_undo_pipe_scramble_reset(dev_priv, pipe);
4077 else if (IS_HASWELL(dev_priv) && pipe == PIPE_A)
4078 hsw_trans_edp_pipe_A_crc_wa(dev_priv, false);
4079
4080 hsw_enable_ips(crtc);
4081 }
4082
4083 ret = 0;
4084
4085out:
4086 intel_display_power_put(dev_priv, power_domain);
4087
4088 return ret;
4089}
4090
4091/*
4092 * Parse pipe CRC command strings:
4093 * command: wsp* object wsp+ name wsp+ source wsp*
4094 * object: 'pipe'
4095 * name: (A | B | C)
4096 * source: (none | plane1 | plane2 | pf)
4097 * wsp: (#0x20 | #0x9 | #0xA)+
4098 *
4099 * eg.:
4100 * "pipe A plane1" -> Start CRC computations on plane1 of pipe A
4101 * "pipe A none" -> Stop CRC
4102 */
4103static int display_crc_ctl_tokenize(char *buf, char *words[], int max_words)
4104{
4105 int n_words = 0;
4106
4107 while (*buf) {
4108 char *end;
4109
4110 /* skip leading white space */
4111 buf = skip_spaces(buf);
4112 if (!*buf)
4113 break; /* end of buffer */
4114
4115 /* find end of word */
4116 for (end = buf; *end && !isspace(*end); end++)
4117 ;
4118
4119 if (n_words == max_words) {
4120 DRM_DEBUG_DRIVER("too many words, allowed <= %d\n",
4121 max_words);
4122 return -EINVAL; /* ran out of words[] before bytes */
4123 }
4124
4125 if (*end)
4126 *end++ = '\0';
4127 words[n_words++] = buf;
4128 buf = end;
4129 }
4130
4131 return n_words;
4132}
4133
4134enum intel_pipe_crc_object {
4135 PIPE_CRC_OBJECT_PIPE,
4136};
4137
4138static const char * const pipe_crc_objects[] = {
4139 "pipe",
4140};
4141
4142static int
4143display_crc_ctl_parse_object(const char *buf, enum intel_pipe_crc_object *o)
4144{
4145 int i;
4146
4147 for (i = 0; i < ARRAY_SIZE(pipe_crc_objects); i++)
4148 if (!strcmp(buf, pipe_crc_objects[i])) {
4149 *o = i;
4150 return 0;
4151 }
4152
4153 return -EINVAL;
4154}
4155
4156static int display_crc_ctl_parse_pipe(const char *buf, enum pipe *pipe)
4157{
4158 const char name = buf[0];
4159
4160 if (name < 'A' || name >= pipe_name(I915_MAX_PIPES))
4161 return -EINVAL;
4162
4163 *pipe = name - 'A';
4164
4165 return 0;
4166}
4167
4168static int
4169display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s)
4170{
4171 int i;
4172
4173 for (i = 0; i < ARRAY_SIZE(pipe_crc_sources); i++)
4174 if (!strcmp(buf, pipe_crc_sources[i])) {
4175 *s = i;
4176 return 0;
4177 }
4178
4179 return -EINVAL;
4180}
4181
4182static int display_crc_ctl_parse(struct drm_i915_private *dev_priv,
4183 char *buf, size_t len)
4184{
4185#define N_WORDS 3
4186 int n_words;
4187 char *words[N_WORDS];
4188 enum pipe pipe;
4189 enum intel_pipe_crc_object object;
4190 enum intel_pipe_crc_source source;
4191
4192 n_words = display_crc_ctl_tokenize(buf, words, N_WORDS);
4193 if (n_words != N_WORDS) {
4194 DRM_DEBUG_DRIVER("tokenize failed, a command is %d words\n",
4195 N_WORDS);
4196 return -EINVAL;
4197 }
4198
4199 if (display_crc_ctl_parse_object(words[0], &object) < 0) {
4200 DRM_DEBUG_DRIVER("unknown object %s\n", words[0]);
4201 return -EINVAL;
4202 }
4203
4204 if (display_crc_ctl_parse_pipe(words[1], &pipe) < 0) {
4205 DRM_DEBUG_DRIVER("unknown pipe %s\n", words[1]);
4206 return -EINVAL;
4207 }
4208
4209 if (display_crc_ctl_parse_source(words[2], &source) < 0) {
4210 DRM_DEBUG_DRIVER("unknown source %s\n", words[2]);
4211 return -EINVAL;
4212 }
4213
4214 return pipe_crc_set_source(dev_priv, pipe, source);
4215}
4216
4217static ssize_t display_crc_ctl_write(struct file *file, const char __user *ubuf,
4218 size_t len, loff_t *offp)
4219{
4220 struct seq_file *m = file->private_data;
4221 struct drm_i915_private *dev_priv = m->private;
4222 char *tmpbuf;
4223 int ret;
4224
4225 if (len == 0)
4226 return 0;
4227
4228 if (len > PAGE_SIZE - 1) {
4229 DRM_DEBUG_DRIVER("expected <%lu bytes into pipe crc control\n",
4230 PAGE_SIZE);
4231 return -E2BIG;
4232 }
4233
4234 tmpbuf = kmalloc(len + 1, GFP_KERNEL);
4235 if (!tmpbuf)
4236 return -ENOMEM;
4237
4238 if (copy_from_user(tmpbuf, ubuf, len)) {
4239 ret = -EFAULT;
4240 goto out;
4241 }
4242 tmpbuf[len] = '\0';
4243
4244 ret = display_crc_ctl_parse(dev_priv, tmpbuf, len);
4245
4246out:
4247 kfree(tmpbuf);
4248 if (ret < 0)
4249 return ret;
4250
4251 *offp += len;
4252 return len;
4253}
4254
4255static const struct file_operations i915_display_crc_ctl_fops = {
4256 .owner = THIS_MODULE,
4257 .open = display_crc_ctl_open,
4258 .read = seq_read,
4259 .llseek = seq_lseek,
4260 .release = single_release,
4261 .write = display_crc_ctl_write
4262};
4263
4264static ssize_t i915_displayport_test_active_write(struct file *file,
4265 const char __user *ubuf,
4266 size_t len, loff_t *offp)
4267{
4268 char *input_buffer;
4269 int status = 0;
4270 struct drm_device *dev;
4271 struct drm_connector *connector;
4272 struct list_head *connector_list;
4273 struct intel_dp *intel_dp;
4274 int val = 0;
4275
4276 dev = ((struct seq_file *)file->private_data)->private;
4277
4278 connector_list = &dev->mode_config.connector_list;
4279
4280 if (len == 0)
4281 return 0;
4282
4283 input_buffer = kmalloc(len + 1, GFP_KERNEL);
4284 if (!input_buffer)
4285 return -ENOMEM;
4286
4287 if (copy_from_user(input_buffer, ubuf, len)) {
4288 status = -EFAULT;
4289 goto out;
4290 }
4291
4292 input_buffer[len] = '\0';
4293 DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len);
4294
4295 list_for_each_entry(connector, connector_list, head) {
4296 if (connector->connector_type !=
4297 DRM_MODE_CONNECTOR_DisplayPort)
4298 continue;
4299
4300 if (connector->status == connector_status_connected &&
4301 connector->encoder != NULL) {
4302 intel_dp = enc_to_intel_dp(connector->encoder);
4303 status = kstrtoint(input_buffer, 10, &val);
4304 if (status < 0)
4305 goto out;
4306 DRM_DEBUG_DRIVER("Got %d for test active\n", val);
4307 /* To prevent erroneous activation of the compliance
4308 * testing code, only accept an actual value of 1 here
4309 */
4310 if (val == 1)
4311 intel_dp->compliance_test_active = 1;
4312 else
4313 intel_dp->compliance_test_active = 0;
4314 }
4315 }
4316out:
4317 kfree(input_buffer);
4318 if (status < 0)
4319 return status;
4320
4321 *offp += len;
4322 return len;
4323}
4324
4325static int i915_displayport_test_active_show(struct seq_file *m, void *data)
4326{
4327 struct drm_device *dev = m->private;
4328 struct drm_connector *connector;
4329 struct list_head *connector_list = &dev->mode_config.connector_list;
4330 struct intel_dp *intel_dp;
4331
4332 list_for_each_entry(connector, connector_list, head) {
4333 if (connector->connector_type !=
4334 DRM_MODE_CONNECTOR_DisplayPort)
4335 continue;
4336
4337 if (connector->status == connector_status_connected &&
4338 connector->encoder != NULL) {
4339 intel_dp = enc_to_intel_dp(connector->encoder);
4340 if (intel_dp->compliance_test_active)
4341 seq_puts(m, "1");
4342 else
4343 seq_puts(m, "0");
4344 } else
4345 seq_puts(m, "0");
4346 }
4347
4348 return 0;
4349}
4350
4351static int i915_displayport_test_active_open(struct inode *inode,
4352 struct file *file)
4353{
4354 struct drm_i915_private *dev_priv = inode->i_private;
4355
4356 return single_open(file, i915_displayport_test_active_show,
4357 &dev_priv->drm);
4358}
4359
4360static const struct file_operations i915_displayport_test_active_fops = {
4361 .owner = THIS_MODULE,
4362 .open = i915_displayport_test_active_open,
4363 .read = seq_read,
4364 .llseek = seq_lseek,
4365 .release = single_release,
4366 .write = i915_displayport_test_active_write
4367};
4368
4369static int i915_displayport_test_data_show(struct seq_file *m, void *data)
4370{
4371 struct drm_device *dev = m->private;
4372 struct drm_connector *connector;
4373 struct list_head *connector_list = &dev->mode_config.connector_list;
4374 struct intel_dp *intel_dp;
4375
4376 list_for_each_entry(connector, connector_list, head) {
4377 if (connector->connector_type !=
4378 DRM_MODE_CONNECTOR_DisplayPort)
4379 continue;
4380
4381 if (connector->status == connector_status_connected &&
4382 connector->encoder != NULL) {
4383 intel_dp = enc_to_intel_dp(connector->encoder);
4384 seq_printf(m, "%lx", intel_dp->compliance_test_data);
4385 } else
4386 seq_puts(m, "0");
4387 }
4388
4389 return 0;
4390}
4391static int i915_displayport_test_data_open(struct inode *inode,
4392 struct file *file)
4393{
4394 struct drm_i915_private *dev_priv = inode->i_private;
4395
4396 return single_open(file, i915_displayport_test_data_show,
4397 &dev_priv->drm);
4398}
4399
4400static const struct file_operations i915_displayport_test_data_fops = {
4401 .owner = THIS_MODULE,
4402 .open = i915_displayport_test_data_open,
4403 .read = seq_read,
4404 .llseek = seq_lseek,
4405 .release = single_release
4406};
4407
4408static int i915_displayport_test_type_show(struct seq_file *m, void *data)
4409{
4410 struct drm_device *dev = m->private;
4411 struct drm_connector *connector;
4412 struct list_head *connector_list = &dev->mode_config.connector_list;
4413 struct intel_dp *intel_dp;
4414
4415 list_for_each_entry(connector, connector_list, head) {
4416 if (connector->connector_type !=
4417 DRM_MODE_CONNECTOR_DisplayPort)
4418 continue;
4419
4420 if (connector->status == connector_status_connected &&
4421 connector->encoder != NULL) {
4422 intel_dp = enc_to_intel_dp(connector->encoder);
4423 seq_printf(m, "%02lx", intel_dp->compliance_test_type);
4424 } else
4425 seq_puts(m, "0");
4426 }
4427
4428 return 0;
4429}
4430
4431static int i915_displayport_test_type_open(struct inode *inode,
4432 struct file *file)
4433{
4434 struct drm_i915_private *dev_priv = inode->i_private;
4435
4436 return single_open(file, i915_displayport_test_type_show,
4437 &dev_priv->drm);
4438}
4439
4440static const struct file_operations i915_displayport_test_type_fops = {
4441 .owner = THIS_MODULE,
4442 .open = i915_displayport_test_type_open,
4443 .read = seq_read,
4444 .llseek = seq_lseek,
4445 .release = single_release
4446};
4447
4448static void wm_latency_show(struct seq_file *m, const uint16_t wm[8])
4449{
4450 struct drm_i915_private *dev_priv = m->private;
4451 struct drm_device *dev = &dev_priv->drm;
4452 int level;
4453 int num_levels;
4454
4455 if (IS_CHERRYVIEW(dev_priv))
4456 num_levels = 3;
4457 else if (IS_VALLEYVIEW(dev_priv))
4458 num_levels = 1;
4459 else
4460 num_levels = ilk_wm_max_level(dev) + 1;
4461
4462 drm_modeset_lock_all(dev);
4463
4464 for (level = 0; level < num_levels; level++) {
4465 unsigned int latency = wm[level];
4466
4467 /*
4468 * - WM1+ latency values in 0.5us units
4469 * - latencies are in us on gen9/vlv/chv
4470 */
4471 if (INTEL_GEN(dev_priv) >= 9 || IS_VALLEYVIEW(dev_priv) ||
4472 IS_CHERRYVIEW(dev_priv))
4473 latency *= 10;
4474 else if (level > 0)
4475 latency *= 5;
4476
4477 seq_printf(m, "WM%d %u (%u.%u usec)\n",
4478 level, wm[level], latency / 10, latency % 10);
4479 }
4480
4481 drm_modeset_unlock_all(dev);
4482}
4483
4484static int pri_wm_latency_show(struct seq_file *m, void *data)
4485{
4486 struct drm_i915_private *dev_priv = m->private;
4487 const uint16_t *latencies;
4488
4489 if (INTEL_GEN(dev_priv) >= 9)
4490 latencies = dev_priv->wm.skl_latency;
4491 else
4492 latencies = dev_priv->wm.pri_latency;
4493
4494 wm_latency_show(m, latencies);
4495
4496 return 0;
4497}
4498
4499static int spr_wm_latency_show(struct seq_file *m, void *data)
4500{
4501 struct drm_i915_private *dev_priv = m->private;
4502 const uint16_t *latencies;
4503
4504 if (INTEL_GEN(dev_priv) >= 9)
4505 latencies = dev_priv->wm.skl_latency;
4506 else
4507 latencies = dev_priv->wm.spr_latency;
4508
4509 wm_latency_show(m, latencies);
4510
4511 return 0;
4512}
4513
4514static int cur_wm_latency_show(struct seq_file *m, void *data)
4515{
4516 struct drm_i915_private *dev_priv = m->private;
4517 const uint16_t *latencies;
4518
4519 if (INTEL_GEN(dev_priv) >= 9)
4520 latencies = dev_priv->wm.skl_latency;
4521 else
4522 latencies = dev_priv->wm.cur_latency;
4523
4524 wm_latency_show(m, latencies);
4525
4526 return 0;
4527}
4528
4529static int pri_wm_latency_open(struct inode *inode, struct file *file)
4530{
4531 struct drm_i915_private *dev_priv = inode->i_private;
4532
4533 if (INTEL_GEN(dev_priv) < 5)
4534 return -ENODEV;
4535
4536 return single_open(file, pri_wm_latency_show, dev_priv);
4537}
4538
4539static int spr_wm_latency_open(struct inode *inode, struct file *file)
4540{
4541 struct drm_i915_private *dev_priv = inode->i_private;
4542
4543 if (HAS_GMCH_DISPLAY(dev_priv))
4544 return -ENODEV;
4545
4546 return single_open(file, spr_wm_latency_show, dev_priv);
4547}
4548
4549static int cur_wm_latency_open(struct inode *inode, struct file *file)
4550{
4551 struct drm_i915_private *dev_priv = inode->i_private;
4552
4553 if (HAS_GMCH_DISPLAY(dev_priv))
4554 return -ENODEV;
4555
4556 return single_open(file, cur_wm_latency_show, dev_priv);
4557}
4558
4559static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,
4560 size_t len, loff_t *offp, uint16_t wm[8])
4561{
4562 struct seq_file *m = file->private_data;
4563 struct drm_i915_private *dev_priv = m->private;
4564 struct drm_device *dev = &dev_priv->drm;
4565 uint16_t new[8] = { 0 };
4566 int num_levels;
4567 int level;
4568 int ret;
4569 char tmp[32];
4570
4571 if (IS_CHERRYVIEW(dev_priv))
4572 num_levels = 3;
4573 else if (IS_VALLEYVIEW(dev_priv))
4574 num_levels = 1;
4575 else
4576 num_levels = ilk_wm_max_level(dev) + 1;
4577
4578 if (len >= sizeof(tmp))
4579 return -EINVAL;
4580
4581 if (copy_from_user(tmp, ubuf, len))
4582 return -EFAULT;
4583
4584 tmp[len] = '\0';
4585
4586 ret = sscanf(tmp, "%hu %hu %hu %hu %hu %hu %hu %hu",
4587 &new[0], &new[1], &new[2], &new[3],
4588 &new[4], &new[5], &new[6], &new[7]);
4589 if (ret != num_levels)
4590 return -EINVAL;
4591
4592 drm_modeset_lock_all(dev);
4593
4594 for (level = 0; level < num_levels; level++)
4595 wm[level] = new[level];
4596
4597 drm_modeset_unlock_all(dev);
4598
4599 return len;
4600}
4601
4602
4603static ssize_t pri_wm_latency_write(struct file *file, const char __user *ubuf,
4604 size_t len, loff_t *offp)
4605{
4606 struct seq_file *m = file->private_data;
4607 struct drm_i915_private *dev_priv = m->private;
4608 uint16_t *latencies;
4609
4610 if (INTEL_GEN(dev_priv) >= 9)
4611 latencies = dev_priv->wm.skl_latency;
4612 else
4613 latencies = dev_priv->wm.pri_latency;
4614
4615 return wm_latency_write(file, ubuf, len, offp, latencies);
4616}
4617
4618static ssize_t spr_wm_latency_write(struct file *file, const char __user *ubuf,
4619 size_t len, loff_t *offp)
4620{
4621 struct seq_file *m = file->private_data;
4622 struct drm_i915_private *dev_priv = m->private;
4623 uint16_t *latencies;
4624
4625 if (INTEL_GEN(dev_priv) >= 9)
4626 latencies = dev_priv->wm.skl_latency;
4627 else
4628 latencies = dev_priv->wm.spr_latency;
4629
4630 return wm_latency_write(file, ubuf, len, offp, latencies);
4631}
4632
4633static ssize_t cur_wm_latency_write(struct file *file, const char __user *ubuf,
4634 size_t len, loff_t *offp)
4635{
4636 struct seq_file *m = file->private_data;
4637 struct drm_i915_private *dev_priv = m->private;
4638 uint16_t *latencies;
4639
4640 if (INTEL_GEN(dev_priv) >= 9)
4641 latencies = dev_priv->wm.skl_latency;
4642 else
4643 latencies = dev_priv->wm.cur_latency;
4644
4645 return wm_latency_write(file, ubuf, len, offp, latencies);
4646}
4647
4648static const struct file_operations i915_pri_wm_latency_fops = {
4649 .owner = THIS_MODULE,
4650 .open = pri_wm_latency_open,
4651 .read = seq_read,
4652 .llseek = seq_lseek,
4653 .release = single_release,
4654 .write = pri_wm_latency_write
4655};
4656
4657static const struct file_operations i915_spr_wm_latency_fops = {
4658 .owner = THIS_MODULE,
4659 .open = spr_wm_latency_open,
4660 .read = seq_read,
4661 .llseek = seq_lseek,
4662 .release = single_release,
4663 .write = spr_wm_latency_write
4664};
4665
4666static const struct file_operations i915_cur_wm_latency_fops = {
4667 .owner = THIS_MODULE,
4668 .open = cur_wm_latency_open,
4669 .read = seq_read,
4670 .llseek = seq_lseek,
4671 .release = single_release,
4672 .write = cur_wm_latency_write
4673};
4674
4675static int
4676i915_wedged_get(void *data, u64 *val)
4677{
4678 struct drm_i915_private *dev_priv = data;
4679
4680 *val = i915_terminally_wedged(&dev_priv->gpu_error);
4681
4682 return 0;
4683}
4684
4685static int
4686i915_wedged_set(void *data, u64 val)
4687{
4688 struct drm_i915_private *dev_priv = data;
4689
4690 /*
4691 * There is no safeguard against this debugfs entry colliding
4692 * with the hangcheck calling same i915_handle_error() in
4693 * parallel, causing an explosion. For now we assume that the
4694 * test harness is responsible enough not to inject gpu hangs
4695 * while it is writing to 'i915_wedged'
4696 */
4697
4698 if (i915_reset_in_progress(&dev_priv->gpu_error))
4699 return -EAGAIN;
4700
4701 intel_runtime_pm_get(dev_priv);
4702
4703 i915_handle_error(dev_priv, val,
4704 "Manually setting wedged to %llu", val);
4705
4706 intel_runtime_pm_put(dev_priv);
4707
4708 return 0;
4709}
4710
4711DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops,
4712 i915_wedged_get, i915_wedged_set,
4713 "%llu\n");
4714
4715static int
4716i915_ring_missed_irq_get(void *data, u64 *val)
4717{
4718 struct drm_i915_private *dev_priv = data;
4719
4720 *val = dev_priv->gpu_error.missed_irq_rings;
4721 return 0;
4722}
4723
4724static int
4725i915_ring_missed_irq_set(void *data, u64 val)
4726{
4727 struct drm_i915_private *dev_priv = data;
4728 struct drm_device *dev = &dev_priv->drm;
4729 int ret;
4730
4731 /* Lock against concurrent debugfs callers */
4732 ret = mutex_lock_interruptible(&dev->struct_mutex);
4733 if (ret)
4734 return ret;
4735 dev_priv->gpu_error.missed_irq_rings = val;
4736 mutex_unlock(&dev->struct_mutex);
4737
4738 return 0;
4739}
4740
4741DEFINE_SIMPLE_ATTRIBUTE(i915_ring_missed_irq_fops,
4742 i915_ring_missed_irq_get, i915_ring_missed_irq_set,
4743 "0x%08llx\n");
4744
4745static int
4746i915_ring_test_irq_get(void *data, u64 *val)
4747{
4748 struct drm_i915_private *dev_priv = data;
4749
4750 *val = dev_priv->gpu_error.test_irq_rings;
4751
4752 return 0;
4753}
4754
4755static int
4756i915_ring_test_irq_set(void *data, u64 val)
4757{
4758 struct drm_i915_private *dev_priv = data;
4759
4760 val &= INTEL_INFO(dev_priv)->ring_mask;
4761 DRM_DEBUG_DRIVER("Masking interrupts on rings 0x%08llx\n", val);
4762 dev_priv->gpu_error.test_irq_rings = val;
4763
4764 return 0;
4765}
4766
4767DEFINE_SIMPLE_ATTRIBUTE(i915_ring_test_irq_fops,
4768 i915_ring_test_irq_get, i915_ring_test_irq_set,
4769 "0x%08llx\n");
4770
4771#define DROP_UNBOUND 0x1
4772#define DROP_BOUND 0x2
4773#define DROP_RETIRE 0x4
4774#define DROP_ACTIVE 0x8
4775#define DROP_ALL (DROP_UNBOUND | \
4776 DROP_BOUND | \
4777 DROP_RETIRE | \
4778 DROP_ACTIVE)
4779static int
4780i915_drop_caches_get(void *data, u64 *val)
4781{
4782 *val = DROP_ALL;
4783
4784 return 0;
4785}
4786
4787static int
4788i915_drop_caches_set(void *data, u64 val)
4789{
4790 struct drm_i915_private *dev_priv = data;
4791 struct drm_device *dev = &dev_priv->drm;
4792 int ret;
4793
4794 DRM_DEBUG("Dropping caches: 0x%08llx\n", val);
4795
4796 /* No need to check and wait for gpu resets, only libdrm auto-restarts
4797 * on ioctls on -EAGAIN. */
4798 ret = mutex_lock_interruptible(&dev->struct_mutex);
4799 if (ret)
4800 return ret;
4801
4802 if (val & DROP_ACTIVE) {
4803 ret = i915_gem_wait_for_idle(dev_priv, true);
4804 if (ret)
4805 goto unlock;
4806 }
4807
4808 if (val & (DROP_RETIRE | DROP_ACTIVE))
4809 i915_gem_retire_requests(dev_priv);
4810
4811 if (val & DROP_BOUND)
4812 i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_BOUND);
4813
4814 if (val & DROP_UNBOUND)
4815 i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_UNBOUND);
4816
4817unlock:
4818 mutex_unlock(&dev->struct_mutex);
4819
4820 return ret;
4821}
4822
4823DEFINE_SIMPLE_ATTRIBUTE(i915_drop_caches_fops,
4824 i915_drop_caches_get, i915_drop_caches_set,
4825 "0x%08llx\n");
4826
4827static int
4828i915_max_freq_get(void *data, u64 *val)
4829{
4830 struct drm_i915_private *dev_priv = data;
4831
4832 if (INTEL_GEN(dev_priv) < 6)
4833 return -ENODEV;
4834
4835 *val = intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit);
4836 return 0;
4837}
4838
4839static int
4840i915_max_freq_set(void *data, u64 val)
4841{
4842 struct drm_i915_private *dev_priv = data;
4843 u32 hw_max, hw_min;
4844 int ret;
4845
4846 if (INTEL_GEN(dev_priv) < 6)
4847 return -ENODEV;
4848
4849 DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
4850
4851 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
4852 if (ret)
4853 return ret;
4854
4855 /*
4856 * Turbo will still be enabled, but won't go above the set value.
4857 */
4858 val = intel_freq_opcode(dev_priv, val);
4859
4860 hw_max = dev_priv->rps.max_freq;
4861 hw_min = dev_priv->rps.min_freq;
4862
4863 if (val < hw_min || val > hw_max || val < dev_priv->rps.min_freq_softlimit) {
4864 mutex_unlock(&dev_priv->rps.hw_lock);
4865 return -EINVAL;
4866 }
4867
4868 dev_priv->rps.max_freq_softlimit = val;
4869
4870 intel_set_rps(dev_priv, val);
4871
4872 mutex_unlock(&dev_priv->rps.hw_lock);
4873
4874 return 0;
4875}
4876
4877DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
4878 i915_max_freq_get, i915_max_freq_set,
4879 "%llu\n");
4880
4881static int
4882i915_min_freq_get(void *data, u64 *val)
4883{
4884 struct drm_i915_private *dev_priv = data;
4885
4886 if (INTEL_GEN(dev_priv) < 6)
4887 return -ENODEV;
4888
4889 *val = intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit);
4890 return 0;
4891}
4892
4893static int
4894i915_min_freq_set(void *data, u64 val)
4895{
4896 struct drm_i915_private *dev_priv = data;
4897 u32 hw_max, hw_min;
4898 int ret;
4899
4900 if (INTEL_GEN(dev_priv) < 6)
4901 return -ENODEV;
4902
4903 DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
4904
4905 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
4906 if (ret)
4907 return ret;
4908
4909 /*
4910 * Turbo will still be enabled, but won't go below the set value.
4911 */
4912 val = intel_freq_opcode(dev_priv, val);
4913
4914 hw_max = dev_priv->rps.max_freq;
4915 hw_min = dev_priv->rps.min_freq;
4916
4917 if (val < hw_min ||
4918 val > hw_max || val > dev_priv->rps.max_freq_softlimit) {
4919 mutex_unlock(&dev_priv->rps.hw_lock);
4920 return -EINVAL;
4921 }
4922
4923 dev_priv->rps.min_freq_softlimit = val;
4924
4925 intel_set_rps(dev_priv, val);
4926
4927 mutex_unlock(&dev_priv->rps.hw_lock);
4928
4929 return 0;
4930}
4931
4932DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
4933 i915_min_freq_get, i915_min_freq_set,
4934 "%llu\n");
4935
4936static int
4937i915_cache_sharing_get(void *data, u64 *val)
4938{
4939 struct drm_i915_private *dev_priv = data;
4940 struct drm_device *dev = &dev_priv->drm;
4941 u32 snpcr;
4942 int ret;
4943
4944 if (!(IS_GEN6(dev_priv) || IS_GEN7(dev_priv)))
4945 return -ENODEV;
4946
4947 ret = mutex_lock_interruptible(&dev->struct_mutex);
4948 if (ret)
4949 return ret;
4950 intel_runtime_pm_get(dev_priv);
4951
4952 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
4953
4954 intel_runtime_pm_put(dev_priv);
4955 mutex_unlock(&dev->struct_mutex);
4956
4957 *val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT;
4958
4959 return 0;
4960}
4961
4962static int
4963i915_cache_sharing_set(void *data, u64 val)
4964{
4965 struct drm_i915_private *dev_priv = data;
4966 u32 snpcr;
4967
4968 if (!(IS_GEN6(dev_priv) || IS_GEN7(dev_priv)))
4969 return -ENODEV;
4970
4971 if (val > 3)
4972 return -EINVAL;
4973
4974 intel_runtime_pm_get(dev_priv);
4975 DRM_DEBUG_DRIVER("Manually setting uncore sharing to %llu\n", val);
4976
4977 /* Update the cache sharing policy here as well */
4978 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
4979 snpcr &= ~GEN6_MBC_SNPCR_MASK;
4980 snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
4981 I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
4982
4983 intel_runtime_pm_put(dev_priv);
4984 return 0;
4985}
4986
4987DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
4988 i915_cache_sharing_get, i915_cache_sharing_set,
4989 "%llu\n");
4990
4991static void cherryview_sseu_device_status(struct drm_i915_private *dev_priv,
4992 struct sseu_dev_info *sseu)
4993{
4994 int ss_max = 2;
4995 int ss;
4996 u32 sig1[ss_max], sig2[ss_max];
4997
4998 sig1[0] = I915_READ(CHV_POWER_SS0_SIG1);
4999 sig1[1] = I915_READ(CHV_POWER_SS1_SIG1);
5000 sig2[0] = I915_READ(CHV_POWER_SS0_SIG2);
5001 sig2[1] = I915_READ(CHV_POWER_SS1_SIG2);
5002
5003 for (ss = 0; ss < ss_max; ss++) {
5004 unsigned int eu_cnt;
5005
5006 if (sig1[ss] & CHV_SS_PG_ENABLE)
5007 /* skip disabled subslice */
5008 continue;
5009
5010 sseu->slice_total = 1;
5011 sseu->subslice_per_slice++;
5012 eu_cnt = ((sig1[ss] & CHV_EU08_PG_ENABLE) ? 0 : 2) +
5013 ((sig1[ss] & CHV_EU19_PG_ENABLE) ? 0 : 2) +
5014 ((sig1[ss] & CHV_EU210_PG_ENABLE) ? 0 : 2) +
5015 ((sig2[ss] & CHV_EU311_PG_ENABLE) ? 0 : 2);
5016 sseu->eu_total += eu_cnt;
5017 sseu->eu_per_subslice = max_t(unsigned int,
5018 sseu->eu_per_subslice, eu_cnt);
5019 }
5020 sseu->subslice_total = sseu->subslice_per_slice;
5021}
5022
5023static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
5024 struct sseu_dev_info *sseu)
5025{
5026 int s_max = 3, ss_max = 4;
5027 int s, ss;
5028 u32 s_reg[s_max], eu_reg[2*s_max], eu_mask[2];
5029
5030 /* BXT has a single slice and at most 3 subslices. */
5031 if (IS_BROXTON(dev_priv)) {
5032 s_max = 1;
5033 ss_max = 3;
5034 }
5035
5036 for (s = 0; s < s_max; s++) {
5037 s_reg[s] = I915_READ(GEN9_SLICE_PGCTL_ACK(s));
5038 eu_reg[2*s] = I915_READ(GEN9_SS01_EU_PGCTL_ACK(s));
5039 eu_reg[2*s + 1] = I915_READ(GEN9_SS23_EU_PGCTL_ACK(s));
5040 }
5041
5042 eu_mask[0] = GEN9_PGCTL_SSA_EU08_ACK |
5043 GEN9_PGCTL_SSA_EU19_ACK |
5044 GEN9_PGCTL_SSA_EU210_ACK |
5045 GEN9_PGCTL_SSA_EU311_ACK;
5046 eu_mask[1] = GEN9_PGCTL_SSB_EU08_ACK |
5047 GEN9_PGCTL_SSB_EU19_ACK |
5048 GEN9_PGCTL_SSB_EU210_ACK |
5049 GEN9_PGCTL_SSB_EU311_ACK;
5050
5051 for (s = 0; s < s_max; s++) {
5052 unsigned int ss_cnt = 0;
5053
5054 if ((s_reg[s] & GEN9_PGCTL_SLICE_ACK) == 0)
5055 /* skip disabled slice */
5056 continue;
5057
5058 sseu->slice_total++;
5059
5060 if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
5061 ss_cnt = INTEL_INFO(dev_priv)->subslice_per_slice;
5062
5063 for (ss = 0; ss < ss_max; ss++) {
5064 unsigned int eu_cnt;
5065
5066 if (IS_BROXTON(dev_priv) &&
5067 !(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
5068 /* skip disabled subslice */
5069 continue;
5070
5071 if (IS_BROXTON(dev_priv))
5072 ss_cnt++;
5073
5074 eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
5075 eu_mask[ss%2]);
5076 sseu->eu_total += eu_cnt;
5077 sseu->eu_per_subslice = max_t(unsigned int,
5078 sseu->eu_per_subslice,
5079 eu_cnt);
5080 }
5081
5082 sseu->subslice_total += ss_cnt;
5083 sseu->subslice_per_slice = max_t(unsigned int,
5084 sseu->subslice_per_slice,
5085 ss_cnt);
5086 }
5087}
5088
5089static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
5090 struct sseu_dev_info *sseu)
5091{
5092 u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
5093 int s;
5094
5095 sseu->slice_total = hweight32(slice_info & GEN8_LSLICESTAT_MASK);
5096
5097 if (sseu->slice_total) {
5098 sseu->subslice_per_slice = INTEL_INFO(dev_priv)->subslice_per_slice;
5099 sseu->subslice_total = sseu->slice_total *
5100 sseu->subslice_per_slice;
5101 sseu->eu_per_subslice = INTEL_INFO(dev_priv)->eu_per_subslice;
5102 sseu->eu_total = sseu->eu_per_subslice * sseu->subslice_total;
5103
5104 /* subtract fused off EU(s) from enabled slice(s) */
5105 for (s = 0; s < sseu->slice_total; s++) {
5106 u8 subslice_7eu = INTEL_INFO(dev_priv)->subslice_7eu[s];
5107
5108 sseu->eu_total -= hweight8(subslice_7eu);
5109 }
5110 }
5111}
5112
5113static int i915_sseu_status(struct seq_file *m, void *unused)
5114{
5115 struct drm_i915_private *dev_priv = node_to_i915(m->private);
5116 struct sseu_dev_info sseu;
5117
5118 if (INTEL_GEN(dev_priv) < 8)
5119 return -ENODEV;
5120
5121 seq_puts(m, "SSEU Device Info\n");
5122 seq_printf(m, " Available Slice Total: %u\n",
5123 INTEL_INFO(dev_priv)->slice_total);
5124 seq_printf(m, " Available Subslice Total: %u\n",
5125 INTEL_INFO(dev_priv)->subslice_total);
5126 seq_printf(m, " Available Subslice Per Slice: %u\n",
5127 INTEL_INFO(dev_priv)->subslice_per_slice);
5128 seq_printf(m, " Available EU Total: %u\n",
5129 INTEL_INFO(dev_priv)->eu_total);
5130 seq_printf(m, " Available EU Per Subslice: %u\n",
5131 INTEL_INFO(dev_priv)->eu_per_subslice);
5132 seq_printf(m, " Has Pooled EU: %s\n", yesno(HAS_POOLED_EU(dev_priv)));
5133 if (HAS_POOLED_EU(dev_priv))
5134 seq_printf(m, " Min EU in pool: %u\n",
5135 INTEL_INFO(dev_priv)->min_eu_in_pool);
5136 seq_printf(m, " Has Slice Power Gating: %s\n",
5137 yesno(INTEL_INFO(dev_priv)->has_slice_pg));
5138 seq_printf(m, " Has Subslice Power Gating: %s\n",
5139 yesno(INTEL_INFO(dev_priv)->has_subslice_pg));
5140 seq_printf(m, " Has EU Power Gating: %s\n",
5141 yesno(INTEL_INFO(dev_priv)->has_eu_pg));
5142
5143 seq_puts(m, "SSEU Device Status\n");
5144 memset(&sseu, 0, sizeof(sseu));
5145
5146 intel_runtime_pm_get(dev_priv);
5147
5148 if (IS_CHERRYVIEW(dev_priv)) {
5149 cherryview_sseu_device_status(dev_priv, &sseu);
5150 } else if (IS_BROADWELL(dev_priv)) {
5151 broadwell_sseu_device_status(dev_priv, &sseu);
5152 } else if (INTEL_GEN(dev_priv) >= 9) {
5153 gen9_sseu_device_status(dev_priv, &sseu);
5154 }
5155
5156 intel_runtime_pm_put(dev_priv);
5157
5158 seq_printf(m, " Enabled Slice Total: %u\n",
5159 sseu.slice_total);
5160 seq_printf(m, " Enabled Subslice Total: %u\n",
5161 sseu.subslice_total);
5162 seq_printf(m, " Enabled Subslice Per Slice: %u\n",
5163 sseu.subslice_per_slice);
5164 seq_printf(m, " Enabled EU Total: %u\n",
5165 sseu.eu_total);
5166 seq_printf(m, " Enabled EU Per Subslice: %u\n",
5167 sseu.eu_per_subslice);
5168
5169 return 0;
5170}
5171
5172static int i915_forcewake_open(struct inode *inode, struct file *file)
5173{
5174 struct drm_i915_private *dev_priv = inode->i_private;
5175
5176 if (INTEL_GEN(dev_priv) < 6)
5177 return 0;
5178
5179 intel_runtime_pm_get(dev_priv);
5180 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
5181
5182 return 0;
5183}
5184
5185static int i915_forcewake_release(struct inode *inode, struct file *file)
5186{
5187 struct drm_i915_private *dev_priv = inode->i_private;
5188
5189 if (INTEL_GEN(dev_priv) < 6)
5190 return 0;
5191
5192 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
5193 intel_runtime_pm_put(dev_priv);
5194
5195 return 0;
5196}
5197
5198static const struct file_operations i915_forcewake_fops = {
5199 .owner = THIS_MODULE,
5200 .open = i915_forcewake_open,
5201 .release = i915_forcewake_release,
5202};
5203
5204static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
5205{
5206 struct dentry *ent;
5207
5208 ent = debugfs_create_file("i915_forcewake_user",
5209 S_IRUSR,
5210 root, to_i915(minor->dev),
5211 &i915_forcewake_fops);
5212 if (!ent)
5213 return -ENOMEM;
5214
5215 return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
5216}
5217
5218static int i915_debugfs_create(struct dentry *root,
5219 struct drm_minor *minor,
5220 const char *name,
5221 const struct file_operations *fops)
5222{
5223 struct dentry *ent;
5224
5225 ent = debugfs_create_file(name,
5226 S_IRUGO | S_IWUSR,
5227 root, to_i915(minor->dev),
5228 fops);
5229 if (!ent)
5230 return -ENOMEM;
5231
5232 return drm_add_fake_info_node(minor, ent, fops);
5233}
5234
5235static const struct drm_info_list i915_debugfs_list[] = {
5236 {"i915_capabilities", i915_capabilities, 0},
5237 {"i915_gem_objects", i915_gem_object_info, 0},
5238 {"i915_gem_gtt", i915_gem_gtt_info, 0},
5239 {"i915_gem_pin_display", i915_gem_gtt_info, 0, (void *)1},
5240 {"i915_gem_stolen", i915_gem_stolen_list_info },
5241 {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
5242 {"i915_gem_request", i915_gem_request_info, 0},
5243 {"i915_gem_seqno", i915_gem_seqno_info, 0},
5244 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
5245 {"i915_gem_interrupt", i915_interrupt_info, 0},
5246 {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
5247 {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
5248 {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
5249 {"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
5250 {"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},
5251 {"i915_guc_info", i915_guc_info, 0},
5252 {"i915_guc_load_status", i915_guc_load_status_info, 0},
5253 {"i915_guc_log_dump", i915_guc_log_dump, 0},
5254 {"i915_frequency_info", i915_frequency_info, 0},
5255 {"i915_hangcheck_info", i915_hangcheck_info, 0},
5256 {"i915_drpc_info", i915_drpc_info, 0},
5257 {"i915_emon_status", i915_emon_status, 0},
5258 {"i915_ring_freq_table", i915_ring_freq_table, 0},
5259 {"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0},
5260 {"i915_fbc_status", i915_fbc_status, 0},
5261 {"i915_ips_status", i915_ips_status, 0},
5262 {"i915_sr_status", i915_sr_status, 0},
5263 {"i915_opregion", i915_opregion, 0},
5264 {"i915_vbt", i915_vbt, 0},
5265 {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
5266 {"i915_context_status", i915_context_status, 0},
5267 {"i915_dump_lrc", i915_dump_lrc, 0},
5268 {"i915_execlists", i915_execlists, 0},
5269 {"i915_forcewake_domains", i915_forcewake_domains, 0},
5270 {"i915_swizzle_info", i915_swizzle_info, 0},
5271 {"i915_ppgtt_info", i915_ppgtt_info, 0},
5272 {"i915_llc", i915_llc, 0},
5273 {"i915_edp_psr_status", i915_edp_psr_status, 0},
5274 {"i915_sink_crc_eDP1", i915_sink_crc, 0},
5275 {"i915_energy_uJ", i915_energy_uJ, 0},
5276 {"i915_runtime_pm_status", i915_runtime_pm_status, 0},
5277 {"i915_power_domain_info", i915_power_domain_info, 0},
5278 {"i915_dmc_info", i915_dmc_info, 0},
5279 {"i915_display_info", i915_display_info, 0},
5280 {"i915_semaphore_status", i915_semaphore_status, 0},
5281 {"i915_shared_dplls_info", i915_shared_dplls_info, 0},
5282 {"i915_dp_mst_info", i915_dp_mst_info, 0},
5283 {"i915_wa_registers", i915_wa_registers, 0},
5284 {"i915_ddb_info", i915_ddb_info, 0},
5285 {"i915_sseu_status", i915_sseu_status, 0},
5286 {"i915_drrs_status", i915_drrs_status, 0},
5287 {"i915_rps_boost_info", i915_rps_boost_info, 0},
5288};
5289#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
5290
5291static const struct i915_debugfs_files {
5292 const char *name;
5293 const struct file_operations *fops;
5294} i915_debugfs_files[] = {
5295 {"i915_wedged", &i915_wedged_fops},
5296 {"i915_max_freq", &i915_max_freq_fops},
5297 {"i915_min_freq", &i915_min_freq_fops},
5298 {"i915_cache_sharing", &i915_cache_sharing_fops},
5299 {"i915_ring_missed_irq", &i915_ring_missed_irq_fops},
5300 {"i915_ring_test_irq", &i915_ring_test_irq_fops},
5301 {"i915_gem_drop_caches", &i915_drop_caches_fops},
5302 {"i915_error_state", &i915_error_state_fops},
5303 {"i915_next_seqno", &i915_next_seqno_fops},
5304 {"i915_display_crc_ctl", &i915_display_crc_ctl_fops},
5305 {"i915_pri_wm_latency", &i915_pri_wm_latency_fops},
5306 {"i915_spr_wm_latency", &i915_spr_wm_latency_fops},
5307 {"i915_cur_wm_latency", &i915_cur_wm_latency_fops},
5308 {"i915_fbc_false_color", &i915_fbc_fc_fops},
5309 {"i915_dp_test_data", &i915_displayport_test_data_fops},
5310 {"i915_dp_test_type", &i915_displayport_test_type_fops},
5311 {"i915_dp_test_active", &i915_displayport_test_active_fops}
5312};
5313
5314void intel_display_crc_init(struct drm_i915_private *dev_priv)
5315{
5316 enum pipe pipe;
5317
5318 for_each_pipe(dev_priv, pipe) {
5319 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
5320
5321 pipe_crc->opened = false;
5322 spin_lock_init(&pipe_crc->lock);
5323 init_waitqueue_head(&pipe_crc->wq);
5324 }
5325}
5326
5327int i915_debugfs_register(struct drm_i915_private *dev_priv)
5328{
5329 struct drm_minor *minor = dev_priv->drm.primary;
5330 int ret, i;
5331
5332 ret = i915_forcewake_create(minor->debugfs_root, minor);
5333 if (ret)
5334 return ret;
5335
5336 for (i = 0; i < ARRAY_SIZE(i915_pipe_crc_data); i++) {
5337 ret = i915_pipe_crc_create(minor->debugfs_root, minor, i);
5338 if (ret)
5339 return ret;
5340 }
5341
5342 for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
5343 ret = i915_debugfs_create(minor->debugfs_root, minor,
5344 i915_debugfs_files[i].name,
5345 i915_debugfs_files[i].fops);
5346 if (ret)
5347 return ret;
5348 }
5349
5350 return drm_debugfs_create_files(i915_debugfs_list,
5351 I915_DEBUGFS_ENTRIES,
5352 minor->debugfs_root, minor);
5353}
5354
5355void i915_debugfs_unregister(struct drm_i915_private *dev_priv)
5356{
5357 struct drm_minor *minor = dev_priv->drm.primary;
5358 int i;
5359
5360 drm_debugfs_remove_files(i915_debugfs_list,
5361 I915_DEBUGFS_ENTRIES, minor);
5362
5363 drm_debugfs_remove_files((struct drm_info_list *)&i915_forcewake_fops,
5364 1, minor);
5365
5366 for (i = 0; i < ARRAY_SIZE(i915_pipe_crc_data); i++) {
5367 struct drm_info_list *info_list =
5368 (struct drm_info_list *)&i915_pipe_crc_data[i];
5369
5370 drm_debugfs_remove_files(info_list, 1, minor);
5371 }
5372
5373 for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
5374 struct drm_info_list *info_list =
5375 (struct drm_info_list *)i915_debugfs_files[i].fops;
5376
5377 drm_debugfs_remove_files(info_list, 1, minor);
5378 }
5379}
5380
5381struct dpcd_block {
5382 /* DPCD dump start address. */
5383 unsigned int offset;
5384 /* DPCD dump end address, inclusive. If unset, .size will be used. */
5385 unsigned int end;
5386 /* DPCD dump size. Used if .end is unset. If unset, defaults to 1. */
5387 size_t size;
5388 /* Only valid for eDP. */
5389 bool edp;
5390};
5391
5392static const struct dpcd_block i915_dpcd_debug[] = {
5393 { .offset = DP_DPCD_REV, .size = DP_RECEIVER_CAP_SIZE },
5394 { .offset = DP_PSR_SUPPORT, .end = DP_PSR_CAPS },
5395 { .offset = DP_DOWNSTREAM_PORT_0, .size = 16 },
5396 { .offset = DP_LINK_BW_SET, .end = DP_EDP_CONFIGURATION_SET },
5397 { .offset = DP_SINK_COUNT, .end = DP_ADJUST_REQUEST_LANE2_3 },
5398 { .offset = DP_SET_POWER },
5399 { .offset = DP_EDP_DPCD_REV },
5400 { .offset = DP_EDP_GENERAL_CAP_1, .end = DP_EDP_GENERAL_CAP_3 },
5401 { .offset = DP_EDP_DISPLAY_CONTROL_REGISTER, .end = DP_EDP_BACKLIGHT_FREQ_CAP_MAX_LSB },
5402 { .offset = DP_EDP_DBC_MINIMUM_BRIGHTNESS_SET, .end = DP_EDP_DBC_MAXIMUM_BRIGHTNESS_SET },
5403};
5404
5405static int i915_dpcd_show(struct seq_file *m, void *data)
5406{
5407 struct drm_connector *connector = m->private;
5408 struct intel_dp *intel_dp =
5409 enc_to_intel_dp(&intel_attached_encoder(connector)->base);
5410 uint8_t buf[16];
5411 ssize_t err;
5412 int i;
5413
5414 if (connector->status != connector_status_connected)
5415 return -ENODEV;
5416
5417 for (i = 0; i < ARRAY_SIZE(i915_dpcd_debug); i++) {
5418 const struct dpcd_block *b = &i915_dpcd_debug[i];
5419 size_t size = b->end ? b->end - b->offset + 1 : (b->size ?: 1);
5420
5421 if (b->edp &&
5422 connector->connector_type != DRM_MODE_CONNECTOR_eDP)
5423 continue;
5424
5425 /* low tech for now */
5426 if (WARN_ON(size > sizeof(buf)))
5427 continue;
5428
5429 err = drm_dp_dpcd_read(&intel_dp->aux, b->offset, buf, size);
5430 if (err <= 0) {
5431 DRM_ERROR("dpcd read (%zu bytes at %u) failed (%zd)\n",
5432 size, b->offset, err);
5433 continue;
5434 }
5435
5436 seq_printf(m, "%04x: %*ph\n", b->offset, (int) size, buf);
5437 }
5438
5439 return 0;
5440}
5441
5442static int i915_dpcd_open(struct inode *inode, struct file *file)
5443{
5444 return single_open(file, i915_dpcd_show, inode->i_private);
5445}
5446
5447static const struct file_operations i915_dpcd_fops = {
5448 .owner = THIS_MODULE,
5449 .open = i915_dpcd_open,
5450 .read = seq_read,
5451 .llseek = seq_lseek,
5452 .release = single_release,
5453};
5454
5455static int i915_panel_show(struct seq_file *m, void *data)
5456{
5457 struct drm_connector *connector = m->private;
5458 struct intel_dp *intel_dp =
5459 enc_to_intel_dp(&intel_attached_encoder(connector)->base);
5460
5461 if (connector->status != connector_status_connected)
5462 return -ENODEV;
5463
5464 seq_printf(m, "Panel power up delay: %d\n",
5465 intel_dp->panel_power_up_delay);
5466 seq_printf(m, "Panel power down delay: %d\n",
5467 intel_dp->panel_power_down_delay);
5468 seq_printf(m, "Backlight on delay: %d\n",
5469 intel_dp->backlight_on_delay);
5470 seq_printf(m, "Backlight off delay: %d\n",
5471 intel_dp->backlight_off_delay);
5472
5473 return 0;
5474}
5475
5476static int i915_panel_open(struct inode *inode, struct file *file)
5477{
5478 return single_open(file, i915_panel_show, inode->i_private);
5479}
5480
5481static const struct file_operations i915_panel_fops = {
5482 .owner = THIS_MODULE,
5483 .open = i915_panel_open,
5484 .read = seq_read,
5485 .llseek = seq_lseek,
5486 .release = single_release,
5487};
5488
5489/**
5490 * i915_debugfs_connector_add - add i915 specific connector debugfs files
5491 * @connector: pointer to a registered drm_connector
5492 *
5493 * Cleanup will be done by drm_connector_unregister() through a call to
5494 * drm_debugfs_connector_remove().
5495 *
5496 * Returns 0 on success, negative error codes on error.
5497 */
5498int i915_debugfs_connector_add(struct drm_connector *connector)
5499{
5500 struct dentry *root = connector->debugfs_entry;
5501
5502 /* The connector must have been registered beforehands. */
5503 if (!root)
5504 return -ENODEV;
5505
5506 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
5507 connector->connector_type == DRM_MODE_CONNECTOR_eDP)
5508 debugfs_create_file("i915_dpcd", S_IRUGO, root,
5509 connector, &i915_dpcd_fops);
5510
5511 if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
5512 debugfs_create_file("i915_panel_timings", S_IRUGO, root,
5513 connector, &i915_panel_fops);
5514
5515 return 0;
5516}
Linux kernel - Deliverables
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