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drm/i915: Add struct_mutex locking for debugs/i915_gem_framebuffer
[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_debugfs.c
1 /*
2 * Copyright © 2008 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 * Keith Packard <keithp@keithp.com>
26 *
27 */
28
29 #include <linux/seq_file.h>
30 #include <linux/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
43 enum {
44 ACTIVE_LIST,
45 INACTIVE_LIST,
46 PINNED_LIST,
47 };
48
49 /* As the drm_debugfs_init() routines are called before dev->dev_private is
50 * allocated we need to hook into the minor for release. */
51 static int
52 drm_add_fake_info_node(struct drm_minor *minor,
53 struct dentry *ent,
54 const void *key)
55 {
56 struct drm_info_node *node;
57
58 node = kmalloc(sizeof(*node), GFP_KERNEL);
59 if (node == NULL) {
60 debugfs_remove(ent);
61 return -ENOMEM;
62 }
63
64 node->minor = minor;
65 node->dent = ent;
66 node->info_ent = (void *) key;
67
68 mutex_lock(&minor->debugfs_lock);
69 list_add(&node->list, &minor->debugfs_list);
70 mutex_unlock(&minor->debugfs_lock);
71
72 return 0;
73 }
74
75 static int i915_capabilities(struct seq_file *m, void *data)
76 {
77 struct drm_info_node *node = m->private;
78 struct drm_device *dev = node->minor->dev;
79 const struct intel_device_info *info = INTEL_INFO(dev);
80
81 seq_printf(m, "gen: %d\n", info->gen);
82 seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
83 #define PRINT_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
84 #define SEP_SEMICOLON ;
85 DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_SEMICOLON);
86 #undef PRINT_FLAG
87 #undef SEP_SEMICOLON
88
89 return 0;
90 }
91
92 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
93 {
94 if (obj->pin_display)
95 return "p";
96 else
97 return " ";
98 }
99
100 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
101 {
102 switch (obj->tiling_mode) {
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
110 static inline const char *get_global_flag(struct drm_i915_gem_object *obj)
111 {
112 return i915_gem_obj_to_ggtt(obj) ? "g" : " ";
113 }
114
115 static u64 i915_gem_obj_total_ggtt_size(struct drm_i915_gem_object *obj)
116 {
117 u64 size = 0;
118 struct i915_vma *vma;
119
120 list_for_each_entry(vma, &obj->vma_list, obj_link) {
121 if (vma->is_ggtt && drm_mm_node_allocated(&vma->node))
122 size += vma->node.size;
123 }
124
125 return size;
126 }
127
128 static void
129 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
130 {
131 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
132 struct intel_engine_cs *engine;
133 struct i915_vma *vma;
134 int pin_count = 0;
135 enum intel_engine_id id;
136
137 lockdep_assert_held(&obj->base.dev->struct_mutex);
138
139 seq_printf(m, "%pK: %s%s%s%s %8zdKiB %02x %02x [ ",
140 &obj->base,
141 obj->active ? "*" : " ",
142 get_pin_flag(obj),
143 get_tiling_flag(obj),
144 get_global_flag(obj),
145 obj->base.size / 1024,
146 obj->base.read_domains,
147 obj->base.write_domain);
148 for_each_engine_id(engine, dev_priv, id)
149 seq_printf(m, "%x ",
150 i915_gem_request_get_seqno(obj->last_read_req[id]));
151 seq_printf(m, "] %x %x%s%s%s",
152 i915_gem_request_get_seqno(obj->last_write_req),
153 i915_gem_request_get_seqno(obj->last_fenced_req),
154 i915_cache_level_str(to_i915(obj->base.dev), obj->cache_level),
155 obj->dirty ? " dirty" : "",
156 obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
157 if (obj->base.name)
158 seq_printf(m, " (name: %d)", obj->base.name);
159 list_for_each_entry(vma, &obj->vma_list, obj_link) {
160 if (vma->pin_count > 0)
161 pin_count++;
162 }
163 seq_printf(m, " (pinned x %d)", pin_count);
164 if (obj->pin_display)
165 seq_printf(m, " (display)");
166 if (obj->fence_reg != I915_FENCE_REG_NONE)
167 seq_printf(m, " (fence: %d)", obj->fence_reg);
168 list_for_each_entry(vma, &obj->vma_list, obj_link) {
169 seq_printf(m, " (%sgtt offset: %08llx, size: %08llx",
170 vma->is_ggtt ? "g" : "pp",
171 vma->node.start, vma->node.size);
172 if (vma->is_ggtt)
173 seq_printf(m, ", type: %u", vma->ggtt_view.type);
174 seq_puts(m, ")");
175 }
176 if (obj->stolen)
177 seq_printf(m, " (stolen: %08llx)", obj->stolen->start);
178 if (obj->pin_display || obj->fault_mappable) {
179 char s[3], *t = s;
180 if (obj->pin_display)
181 *t++ = 'p';
182 if (obj->fault_mappable)
183 *t++ = 'f';
184 *t = '\0';
185 seq_printf(m, " (%s mappable)", s);
186 }
187 if (obj->last_write_req != NULL)
188 seq_printf(m, " (%s)",
189 i915_gem_request_get_engine(obj->last_write_req)->name);
190 if (obj->frontbuffer_bits)
191 seq_printf(m, " (frontbuffer: 0x%03x)", obj->frontbuffer_bits);
192 }
193
194 static void describe_ctx(struct seq_file *m, struct intel_context *ctx)
195 {
196 seq_putc(m, ctx->legacy_hw_ctx.initialized ? 'I' : 'i');
197 seq_putc(m, ctx->remap_slice ? 'R' : 'r');
198 seq_putc(m, ' ');
199 }
200
201 static int i915_gem_object_list_info(struct seq_file *m, void *data)
202 {
203 struct drm_info_node *node = m->private;
204 uintptr_t list = (uintptr_t) node->info_ent->data;
205 struct list_head *head;
206 struct drm_device *dev = node->minor->dev;
207 struct drm_i915_private *dev_priv = to_i915(dev);
208 struct i915_ggtt *ggtt = &dev_priv->ggtt;
209 struct i915_vma *vma;
210 u64 total_obj_size, total_gtt_size;
211 int count, ret;
212
213 ret = mutex_lock_interruptible(&dev->struct_mutex);
214 if (ret)
215 return ret;
216
217 /* FIXME: the user of this interface might want more than just GGTT */
218 switch (list) {
219 case ACTIVE_LIST:
220 seq_puts(m, "Active:\n");
221 head = &ggtt->base.active_list;
222 break;
223 case INACTIVE_LIST:
224 seq_puts(m, "Inactive:\n");
225 head = &ggtt->base.inactive_list;
226 break;
227 default:
228 mutex_unlock(&dev->struct_mutex);
229 return -EINVAL;
230 }
231
232 total_obj_size = total_gtt_size = count = 0;
233 list_for_each_entry(vma, head, vm_link) {
234 seq_printf(m, " ");
235 describe_obj(m, vma->obj);
236 seq_printf(m, "\n");
237 total_obj_size += vma->obj->base.size;
238 total_gtt_size += vma->node.size;
239 count++;
240 }
241 mutex_unlock(&dev->struct_mutex);
242
243 seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n",
244 count, total_obj_size, total_gtt_size);
245 return 0;
246 }
247
248 static int obj_rank_by_stolen(void *priv,
249 struct list_head *A, struct list_head *B)
250 {
251 struct drm_i915_gem_object *a =
252 container_of(A, struct drm_i915_gem_object, obj_exec_link);
253 struct drm_i915_gem_object *b =
254 container_of(B, struct drm_i915_gem_object, obj_exec_link);
255
256 if (a->stolen->start < b->stolen->start)
257 return -1;
258 if (a->stolen->start > b->stolen->start)
259 return 1;
260 return 0;
261 }
262
263 static int i915_gem_stolen_list_info(struct seq_file *m, void *data)
264 {
265 struct drm_info_node *node = m->private;
266 struct drm_device *dev = node->minor->dev;
267 struct drm_i915_private *dev_priv = dev->dev_private;
268 struct drm_i915_gem_object *obj;
269 u64 total_obj_size, total_gtt_size;
270 LIST_HEAD(stolen);
271 int count, ret;
272
273 ret = mutex_lock_interruptible(&dev->struct_mutex);
274 if (ret)
275 return ret;
276
277 total_obj_size = total_gtt_size = count = 0;
278 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
279 if (obj->stolen == NULL)
280 continue;
281
282 list_add(&obj->obj_exec_link, &stolen);
283
284 total_obj_size += obj->base.size;
285 total_gtt_size += i915_gem_obj_total_ggtt_size(obj);
286 count++;
287 }
288 list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
289 if (obj->stolen == NULL)
290 continue;
291
292 list_add(&obj->obj_exec_link, &stolen);
293
294 total_obj_size += obj->base.size;
295 count++;
296 }
297 list_sort(NULL, &stolen, obj_rank_by_stolen);
298 seq_puts(m, "Stolen:\n");
299 while (!list_empty(&stolen)) {
300 obj = list_first_entry(&stolen, typeof(*obj), obj_exec_link);
301 seq_puts(m, " ");
302 describe_obj(m, obj);
303 seq_putc(m, '\n');
304 list_del_init(&obj->obj_exec_link);
305 }
306 mutex_unlock(&dev->struct_mutex);
307
308 seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n",
309 count, total_obj_size, total_gtt_size);
310 return 0;
311 }
312
313 #define count_objects(list, member) do { \
314 list_for_each_entry(obj, list, member) { \
315 size += i915_gem_obj_total_ggtt_size(obj); \
316 ++count; \
317 if (obj->map_and_fenceable) { \
318 mappable_size += i915_gem_obj_ggtt_size(obj); \
319 ++mappable_count; \
320 } \
321 } \
322 } while (0)
323
324 struct file_stats {
325 struct drm_i915_file_private *file_priv;
326 unsigned long count;
327 u64 total, unbound;
328 u64 global, shared;
329 u64 active, inactive;
330 };
331
332 static int per_file_stats(int id, void *ptr, void *data)
333 {
334 struct drm_i915_gem_object *obj = ptr;
335 struct file_stats *stats = data;
336 struct i915_vma *vma;
337
338 stats->count++;
339 stats->total += obj->base.size;
340
341 if (obj->base.name || obj->base.dma_buf)
342 stats->shared += obj->base.size;
343
344 if (USES_FULL_PPGTT(obj->base.dev)) {
345 list_for_each_entry(vma, &obj->vma_list, obj_link) {
346 struct i915_hw_ppgtt *ppgtt;
347
348 if (!drm_mm_node_allocated(&vma->node))
349 continue;
350
351 if (vma->is_ggtt) {
352 stats->global += obj->base.size;
353 continue;
354 }
355
356 ppgtt = container_of(vma->vm, struct i915_hw_ppgtt, base);
357 if (ppgtt->file_priv != stats->file_priv)
358 continue;
359
360 if (obj->active) /* XXX per-vma statistic */
361 stats->active += obj->base.size;
362 else
363 stats->inactive += obj->base.size;
364
365 return 0;
366 }
367 } else {
368 if (i915_gem_obj_ggtt_bound(obj)) {
369 stats->global += obj->base.size;
370 if (obj->active)
371 stats->active += obj->base.size;
372 else
373 stats->inactive += obj->base.size;
374 return 0;
375 }
376 }
377
378 if (!list_empty(&obj->global_list))
379 stats->unbound += obj->base.size;
380
381 return 0;
382 }
383
384 #define print_file_stats(m, name, stats) do { \
385 if (stats.count) \
386 seq_printf(m, "%s: %lu objects, %llu bytes (%llu active, %llu inactive, %llu global, %llu shared, %llu unbound)\n", \
387 name, \
388 stats.count, \
389 stats.total, \
390 stats.active, \
391 stats.inactive, \
392 stats.global, \
393 stats.shared, \
394 stats.unbound); \
395 } while (0)
396
397 static void print_batch_pool_stats(struct seq_file *m,
398 struct drm_i915_private *dev_priv)
399 {
400 struct drm_i915_gem_object *obj;
401 struct file_stats stats;
402 struct intel_engine_cs *engine;
403 int j;
404
405 memset(&stats, 0, sizeof(stats));
406
407 for_each_engine(engine, dev_priv) {
408 for (j = 0; j < ARRAY_SIZE(engine->batch_pool.cache_list); j++) {
409 list_for_each_entry(obj,
410 &engine->batch_pool.cache_list[j],
411 batch_pool_link)
412 per_file_stats(0, obj, &stats);
413 }
414 }
415
416 print_file_stats(m, "[k]batch pool", stats);
417 }
418
419 #define count_vmas(list, member) do { \
420 list_for_each_entry(vma, list, member) { \
421 size += i915_gem_obj_total_ggtt_size(vma->obj); \
422 ++count; \
423 if (vma->obj->map_and_fenceable) { \
424 mappable_size += i915_gem_obj_ggtt_size(vma->obj); \
425 ++mappable_count; \
426 } \
427 } \
428 } while (0)
429
430 static int i915_gem_object_info(struct seq_file *m, void* data)
431 {
432 struct drm_info_node *node = m->private;
433 struct drm_device *dev = node->minor->dev;
434 struct drm_i915_private *dev_priv = to_i915(dev);
435 struct i915_ggtt *ggtt = &dev_priv->ggtt;
436 u32 count, mappable_count, purgeable_count;
437 u64 size, mappable_size, purgeable_size;
438 struct drm_i915_gem_object *obj;
439 struct drm_file *file;
440 struct i915_vma *vma;
441 int ret;
442
443 ret = mutex_lock_interruptible(&dev->struct_mutex);
444 if (ret)
445 return ret;
446
447 seq_printf(m, "%u objects, %zu bytes\n",
448 dev_priv->mm.object_count,
449 dev_priv->mm.object_memory);
450
451 size = count = mappable_size = mappable_count = 0;
452 count_objects(&dev_priv->mm.bound_list, global_list);
453 seq_printf(m, "%u [%u] objects, %llu [%llu] bytes in gtt\n",
454 count, mappable_count, size, mappable_size);
455
456 size = count = mappable_size = mappable_count = 0;
457 count_vmas(&ggtt->base.active_list, vm_link);
458 seq_printf(m, " %u [%u] active objects, %llu [%llu] bytes\n",
459 count, mappable_count, size, mappable_size);
460
461 size = count = mappable_size = mappable_count = 0;
462 count_vmas(&ggtt->base.inactive_list, vm_link);
463 seq_printf(m, " %u [%u] inactive objects, %llu [%llu] bytes\n",
464 count, mappable_count, size, mappable_size);
465
466 size = count = purgeable_size = purgeable_count = 0;
467 list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
468 size += obj->base.size, ++count;
469 if (obj->madv == I915_MADV_DONTNEED)
470 purgeable_size += obj->base.size, ++purgeable_count;
471 }
472 seq_printf(m, "%u unbound objects, %llu bytes\n", count, size);
473
474 size = count = mappable_size = mappable_count = 0;
475 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
476 if (obj->fault_mappable) {
477 size += i915_gem_obj_ggtt_size(obj);
478 ++count;
479 }
480 if (obj->pin_display) {
481 mappable_size += i915_gem_obj_ggtt_size(obj);
482 ++mappable_count;
483 }
484 if (obj->madv == I915_MADV_DONTNEED) {
485 purgeable_size += obj->base.size;
486 ++purgeable_count;
487 }
488 }
489 seq_printf(m, "%u purgeable objects, %llu bytes\n",
490 purgeable_count, purgeable_size);
491 seq_printf(m, "%u pinned mappable objects, %llu bytes\n",
492 mappable_count, mappable_size);
493 seq_printf(m, "%u fault mappable objects, %llu bytes\n",
494 count, size);
495
496 seq_printf(m, "%llu [%llu] gtt total\n",
497 ggtt->base.total, ggtt->mappable_end - ggtt->base.start);
498
499 seq_putc(m, '\n');
500 print_batch_pool_stats(m, dev_priv);
501 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
502 struct file_stats stats;
503 struct task_struct *task;
504
505 memset(&stats, 0, sizeof(stats));
506 stats.file_priv = file->driver_priv;
507 spin_lock(&file->table_lock);
508 idr_for_each(&file->object_idr, per_file_stats, &stats);
509 spin_unlock(&file->table_lock);
510 /*
511 * Although we have a valid reference on file->pid, that does
512 * not guarantee that the task_struct who called get_pid() is
513 * still alive (e.g. get_pid(current) => fork() => exit()).
514 * Therefore, we need to protect this ->comm access using RCU.
515 */
516 rcu_read_lock();
517 task = pid_task(file->pid, PIDTYPE_PID);
518 print_file_stats(m, task ? task->comm : "<unknown>", stats);
519 rcu_read_unlock();
520 }
521
522 mutex_unlock(&dev->struct_mutex);
523
524 return 0;
525 }
526
527 static int i915_gem_gtt_info(struct seq_file *m, void *data)
528 {
529 struct drm_info_node *node = m->private;
530 struct drm_device *dev = node->minor->dev;
531 uintptr_t list = (uintptr_t) node->info_ent->data;
532 struct drm_i915_private *dev_priv = dev->dev_private;
533 struct drm_i915_gem_object *obj;
534 u64 total_obj_size, total_gtt_size;
535 int count, ret;
536
537 ret = mutex_lock_interruptible(&dev->struct_mutex);
538 if (ret)
539 return ret;
540
541 total_obj_size = total_gtt_size = count = 0;
542 list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
543 if (list == PINNED_LIST && !i915_gem_obj_is_pinned(obj))
544 continue;
545
546 seq_puts(m, " ");
547 describe_obj(m, obj);
548 seq_putc(m, '\n');
549 total_obj_size += obj->base.size;
550 total_gtt_size += i915_gem_obj_total_ggtt_size(obj);
551 count++;
552 }
553
554 mutex_unlock(&dev->struct_mutex);
555
556 seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n",
557 count, total_obj_size, total_gtt_size);
558
559 return 0;
560 }
561
562 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
563 {
564 struct drm_info_node *node = m->private;
565 struct drm_device *dev = node->minor->dev;
566 struct drm_i915_private *dev_priv = dev->dev_private;
567 struct intel_crtc *crtc;
568 int ret;
569
570 ret = mutex_lock_interruptible(&dev->struct_mutex);
571 if (ret)
572 return ret;
573
574 for_each_intel_crtc(dev, crtc) {
575 const char pipe = pipe_name(crtc->pipe);
576 const char plane = plane_name(crtc->plane);
577 struct intel_unpin_work *work;
578
579 spin_lock_irq(&dev->event_lock);
580 work = crtc->unpin_work;
581 if (work == NULL) {
582 seq_printf(m, "No flip due on pipe %c (plane %c)\n",
583 pipe, plane);
584 } else {
585 u32 addr;
586
587 if (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
588 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
589 pipe, plane);
590 } else {
591 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
592 pipe, plane);
593 }
594 if (work->flip_queued_req) {
595 struct intel_engine_cs *engine = i915_gem_request_get_engine(work->flip_queued_req);
596
597 seq_printf(m, "Flip queued on %s at seqno %x, next seqno %x [current breadcrumb %x], completed? %d\n",
598 engine->name,
599 i915_gem_request_get_seqno(work->flip_queued_req),
600 dev_priv->next_seqno,
601 engine->get_seqno(engine, true),
602 i915_gem_request_completed(work->flip_queued_req, true));
603 } else
604 seq_printf(m, "Flip not associated with any ring\n");
605 seq_printf(m, "Flip queued on frame %d, (was ready on frame %d), now %d\n",
606 work->flip_queued_vblank,
607 work->flip_ready_vblank,
608 drm_crtc_vblank_count(&crtc->base));
609 if (work->enable_stall_check)
610 seq_puts(m, "Stall check enabled, ");
611 else
612 seq_puts(m, "Stall check waiting for page flip ioctl, ");
613 seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
614
615 if (INTEL_INFO(dev)->gen >= 4)
616 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(crtc->plane)));
617 else
618 addr = I915_READ(DSPADDR(crtc->plane));
619 seq_printf(m, "Current scanout address 0x%08x\n", addr);
620
621 if (work->pending_flip_obj) {
622 seq_printf(m, "New framebuffer address 0x%08lx\n", (long)work->gtt_offset);
623 seq_printf(m, "MMIO update completed? %d\n", addr == work->gtt_offset);
624 }
625 }
626 spin_unlock_irq(&dev->event_lock);
627 }
628
629 mutex_unlock(&dev->struct_mutex);
630
631 return 0;
632 }
633
634 static int i915_gem_batch_pool_info(struct seq_file *m, void *data)
635 {
636 struct drm_info_node *node = m->private;
637 struct drm_device *dev = node->minor->dev;
638 struct drm_i915_private *dev_priv = dev->dev_private;
639 struct drm_i915_gem_object *obj;
640 struct intel_engine_cs *engine;
641 int total = 0;
642 int ret, j;
643
644 ret = mutex_lock_interruptible(&dev->struct_mutex);
645 if (ret)
646 return ret;
647
648 for_each_engine(engine, dev_priv) {
649 for (j = 0; j < ARRAY_SIZE(engine->batch_pool.cache_list); j++) {
650 int count;
651
652 count = 0;
653 list_for_each_entry(obj,
654 &engine->batch_pool.cache_list[j],
655 batch_pool_link)
656 count++;
657 seq_printf(m, "%s cache[%d]: %d objects\n",
658 engine->name, j, count);
659
660 list_for_each_entry(obj,
661 &engine->batch_pool.cache_list[j],
662 batch_pool_link) {
663 seq_puts(m, " ");
664 describe_obj(m, obj);
665 seq_putc(m, '\n');
666 }
667
668 total += count;
669 }
670 }
671
672 seq_printf(m, "total: %d\n", total);
673
674 mutex_unlock(&dev->struct_mutex);
675
676 return 0;
677 }
678
679 static int i915_gem_request_info(struct seq_file *m, void *data)
680 {
681 struct drm_info_node *node = m->private;
682 struct drm_device *dev = node->minor->dev;
683 struct drm_i915_private *dev_priv = dev->dev_private;
684 struct intel_engine_cs *engine;
685 struct drm_i915_gem_request *req;
686 int ret, any;
687
688 ret = mutex_lock_interruptible(&dev->struct_mutex);
689 if (ret)
690 return ret;
691
692 any = 0;
693 for_each_engine(engine, dev_priv) {
694 int count;
695
696 count = 0;
697 list_for_each_entry(req, &engine->request_list, list)
698 count++;
699 if (count == 0)
700 continue;
701
702 seq_printf(m, "%s requests: %d\n", engine->name, count);
703 list_for_each_entry(req, &engine->request_list, list) {
704 struct task_struct *task;
705
706 rcu_read_lock();
707 task = NULL;
708 if (req->pid)
709 task = pid_task(req->pid, PIDTYPE_PID);
710 seq_printf(m, " %x @ %d: %s [%d]\n",
711 req->seqno,
712 (int) (jiffies - req->emitted_jiffies),
713 task ? task->comm : "<unknown>",
714 task ? task->pid : -1);
715 rcu_read_unlock();
716 }
717
718 any++;
719 }
720 mutex_unlock(&dev->struct_mutex);
721
722 if (any == 0)
723 seq_puts(m, "No requests\n");
724
725 return 0;
726 }
727
728 static void i915_ring_seqno_info(struct seq_file *m,
729 struct intel_engine_cs *engine)
730 {
731 if (engine->get_seqno) {
732 seq_printf(m, "Current sequence (%s): %x\n",
733 engine->name, engine->get_seqno(engine, false));
734 }
735 }
736
737 static int i915_gem_seqno_info(struct seq_file *m, void *data)
738 {
739 struct drm_info_node *node = m->private;
740 struct drm_device *dev = node->minor->dev;
741 struct drm_i915_private *dev_priv = dev->dev_private;
742 struct intel_engine_cs *engine;
743 int ret;
744
745 ret = mutex_lock_interruptible(&dev->struct_mutex);
746 if (ret)
747 return ret;
748 intel_runtime_pm_get(dev_priv);
749
750 for_each_engine(engine, dev_priv)
751 i915_ring_seqno_info(m, engine);
752
753 intel_runtime_pm_put(dev_priv);
754 mutex_unlock(&dev->struct_mutex);
755
756 return 0;
757 }
758
759
760 static int i915_interrupt_info(struct seq_file *m, void *data)
761 {
762 struct drm_info_node *node = m->private;
763 struct drm_device *dev = node->minor->dev;
764 struct drm_i915_private *dev_priv = dev->dev_private;
765 struct intel_engine_cs *engine;
766 int ret, i, pipe;
767
768 ret = mutex_lock_interruptible(&dev->struct_mutex);
769 if (ret)
770 return ret;
771 intel_runtime_pm_get(dev_priv);
772
773 if (IS_CHERRYVIEW(dev)) {
774 seq_printf(m, "Master Interrupt Control:\t%08x\n",
775 I915_READ(GEN8_MASTER_IRQ));
776
777 seq_printf(m, "Display IER:\t%08x\n",
778 I915_READ(VLV_IER));
779 seq_printf(m, "Display IIR:\t%08x\n",
780 I915_READ(VLV_IIR));
781 seq_printf(m, "Display IIR_RW:\t%08x\n",
782 I915_READ(VLV_IIR_RW));
783 seq_printf(m, "Display IMR:\t%08x\n",
784 I915_READ(VLV_IMR));
785 for_each_pipe(dev_priv, pipe)
786 seq_printf(m, "Pipe %c stat:\t%08x\n",
787 pipe_name(pipe),
788 I915_READ(PIPESTAT(pipe)));
789
790 seq_printf(m, "Port hotplug:\t%08x\n",
791 I915_READ(PORT_HOTPLUG_EN));
792 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
793 I915_READ(VLV_DPFLIPSTAT));
794 seq_printf(m, "DPINVGTT:\t%08x\n",
795 I915_READ(DPINVGTT));
796
797 for (i = 0; i < 4; i++) {
798 seq_printf(m, "GT Interrupt IMR %d:\t%08x\n",
799 i, I915_READ(GEN8_GT_IMR(i)));
800 seq_printf(m, "GT Interrupt IIR %d:\t%08x\n",
801 i, I915_READ(GEN8_GT_IIR(i)));
802 seq_printf(m, "GT Interrupt IER %d:\t%08x\n",
803 i, I915_READ(GEN8_GT_IER(i)));
804 }
805
806 seq_printf(m, "PCU interrupt mask:\t%08x\n",
807 I915_READ(GEN8_PCU_IMR));
808 seq_printf(m, "PCU interrupt identity:\t%08x\n",
809 I915_READ(GEN8_PCU_IIR));
810 seq_printf(m, "PCU interrupt enable:\t%08x\n",
811 I915_READ(GEN8_PCU_IER));
812 } else if (INTEL_INFO(dev)->gen >= 8) {
813 seq_printf(m, "Master Interrupt Control:\t%08x\n",
814 I915_READ(GEN8_MASTER_IRQ));
815
816 for (i = 0; i < 4; i++) {
817 seq_printf(m, "GT Interrupt IMR %d:\t%08x\n",
818 i, I915_READ(GEN8_GT_IMR(i)));
819 seq_printf(m, "GT Interrupt IIR %d:\t%08x\n",
820 i, I915_READ(GEN8_GT_IIR(i)));
821 seq_printf(m, "GT Interrupt IER %d:\t%08x\n",
822 i, I915_READ(GEN8_GT_IER(i)));
823 }
824
825 for_each_pipe(dev_priv, pipe) {
826 enum intel_display_power_domain power_domain;
827
828 power_domain = POWER_DOMAIN_PIPE(pipe);
829 if (!intel_display_power_get_if_enabled(dev_priv,
830 power_domain)) {
831 seq_printf(m, "Pipe %c power disabled\n",
832 pipe_name(pipe));
833 continue;
834 }
835 seq_printf(m, "Pipe %c IMR:\t%08x\n",
836 pipe_name(pipe),
837 I915_READ(GEN8_DE_PIPE_IMR(pipe)));
838 seq_printf(m, "Pipe %c IIR:\t%08x\n",
839 pipe_name(pipe),
840 I915_READ(GEN8_DE_PIPE_IIR(pipe)));
841 seq_printf(m, "Pipe %c IER:\t%08x\n",
842 pipe_name(pipe),
843 I915_READ(GEN8_DE_PIPE_IER(pipe)));
844
845 intel_display_power_put(dev_priv, power_domain);
846 }
847
848 seq_printf(m, "Display Engine port interrupt mask:\t%08x\n",
849 I915_READ(GEN8_DE_PORT_IMR));
850 seq_printf(m, "Display Engine port interrupt identity:\t%08x\n",
851 I915_READ(GEN8_DE_PORT_IIR));
852 seq_printf(m, "Display Engine port interrupt enable:\t%08x\n",
853 I915_READ(GEN8_DE_PORT_IER));
854
855 seq_printf(m, "Display Engine misc interrupt mask:\t%08x\n",
856 I915_READ(GEN8_DE_MISC_IMR));
857 seq_printf(m, "Display Engine misc interrupt identity:\t%08x\n",
858 I915_READ(GEN8_DE_MISC_IIR));
859 seq_printf(m, "Display Engine misc interrupt enable:\t%08x\n",
860 I915_READ(GEN8_DE_MISC_IER));
861
862 seq_printf(m, "PCU interrupt mask:\t%08x\n",
863 I915_READ(GEN8_PCU_IMR));
864 seq_printf(m, "PCU interrupt identity:\t%08x\n",
865 I915_READ(GEN8_PCU_IIR));
866 seq_printf(m, "PCU interrupt enable:\t%08x\n",
867 I915_READ(GEN8_PCU_IER));
868 } else if (IS_VALLEYVIEW(dev)) {
869 seq_printf(m, "Display IER:\t%08x\n",
870 I915_READ(VLV_IER));
871 seq_printf(m, "Display IIR:\t%08x\n",
872 I915_READ(VLV_IIR));
873 seq_printf(m, "Display IIR_RW:\t%08x\n",
874 I915_READ(VLV_IIR_RW));
875 seq_printf(m, "Display IMR:\t%08x\n",
876 I915_READ(VLV_IMR));
877 for_each_pipe(dev_priv, pipe)
878 seq_printf(m, "Pipe %c stat:\t%08x\n",
879 pipe_name(pipe),
880 I915_READ(PIPESTAT(pipe)));
881
882 seq_printf(m, "Master IER:\t%08x\n",
883 I915_READ(VLV_MASTER_IER));
884
885 seq_printf(m, "Render IER:\t%08x\n",
886 I915_READ(GTIER));
887 seq_printf(m, "Render IIR:\t%08x\n",
888 I915_READ(GTIIR));
889 seq_printf(m, "Render IMR:\t%08x\n",
890 I915_READ(GTIMR));
891
892 seq_printf(m, "PM IER:\t\t%08x\n",
893 I915_READ(GEN6_PMIER));
894 seq_printf(m, "PM IIR:\t\t%08x\n",
895 I915_READ(GEN6_PMIIR));
896 seq_printf(m, "PM IMR:\t\t%08x\n",
897 I915_READ(GEN6_PMIMR));
898
899 seq_printf(m, "Port hotplug:\t%08x\n",
900 I915_READ(PORT_HOTPLUG_EN));
901 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
902 I915_READ(VLV_DPFLIPSTAT));
903 seq_printf(m, "DPINVGTT:\t%08x\n",
904 I915_READ(DPINVGTT));
905
906 } else if (!HAS_PCH_SPLIT(dev)) {
907 seq_printf(m, "Interrupt enable: %08x\n",
908 I915_READ(IER));
909 seq_printf(m, "Interrupt identity: %08x\n",
910 I915_READ(IIR));
911 seq_printf(m, "Interrupt mask: %08x\n",
912 I915_READ(IMR));
913 for_each_pipe(dev_priv, pipe)
914 seq_printf(m, "Pipe %c stat: %08x\n",
915 pipe_name(pipe),
916 I915_READ(PIPESTAT(pipe)));
917 } else {
918 seq_printf(m, "North Display Interrupt enable: %08x\n",
919 I915_READ(DEIER));
920 seq_printf(m, "North Display Interrupt identity: %08x\n",
921 I915_READ(DEIIR));
922 seq_printf(m, "North Display Interrupt mask: %08x\n",
923 I915_READ(DEIMR));
924 seq_printf(m, "South Display Interrupt enable: %08x\n",
925 I915_READ(SDEIER));
926 seq_printf(m, "South Display Interrupt identity: %08x\n",
927 I915_READ(SDEIIR));
928 seq_printf(m, "South Display Interrupt mask: %08x\n",
929 I915_READ(SDEIMR));
930 seq_printf(m, "Graphics Interrupt enable: %08x\n",
931 I915_READ(GTIER));
932 seq_printf(m, "Graphics Interrupt identity: %08x\n",
933 I915_READ(GTIIR));
934 seq_printf(m, "Graphics Interrupt mask: %08x\n",
935 I915_READ(GTIMR));
936 }
937 for_each_engine(engine, dev_priv) {
938 if (INTEL_INFO(dev)->gen >= 6) {
939 seq_printf(m,
940 "Graphics Interrupt mask (%s): %08x\n",
941 engine->name, I915_READ_IMR(engine));
942 }
943 i915_ring_seqno_info(m, engine);
944 }
945 intel_runtime_pm_put(dev_priv);
946 mutex_unlock(&dev->struct_mutex);
947
948 return 0;
949 }
950
951 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
952 {
953 struct drm_info_node *node = m->private;
954 struct drm_device *dev = node->minor->dev;
955 struct drm_i915_private *dev_priv = dev->dev_private;
956 int i, ret;
957
958 ret = mutex_lock_interruptible(&dev->struct_mutex);
959 if (ret)
960 return ret;
961
962 seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
963 for (i = 0; i < dev_priv->num_fence_regs; i++) {
964 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
965
966 seq_printf(m, "Fence %d, pin count = %d, object = ",
967 i, dev_priv->fence_regs[i].pin_count);
968 if (obj == NULL)
969 seq_puts(m, "unused");
970 else
971 describe_obj(m, obj);
972 seq_putc(m, '\n');
973 }
974
975 mutex_unlock(&dev->struct_mutex);
976 return 0;
977 }
978
979 static int i915_hws_info(struct seq_file *m, void *data)
980 {
981 struct drm_info_node *node = m->private;
982 struct drm_device *dev = node->minor->dev;
983 struct drm_i915_private *dev_priv = dev->dev_private;
984 struct intel_engine_cs *engine;
985 const u32 *hws;
986 int i;
987
988 engine = &dev_priv->engine[(uintptr_t)node->info_ent->data];
989 hws = engine->status_page.page_addr;
990 if (hws == NULL)
991 return 0;
992
993 for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
994 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
995 i * 4,
996 hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
997 }
998 return 0;
999 }
1000
1001 static ssize_t
1002 i915_error_state_write(struct file *filp,
1003 const char __user *ubuf,
1004 size_t cnt,
1005 loff_t *ppos)
1006 {
1007 struct i915_error_state_file_priv *error_priv = filp->private_data;
1008 struct drm_device *dev = error_priv->dev;
1009 int ret;
1010
1011 DRM_DEBUG_DRIVER("Resetting error state\n");
1012
1013 ret = mutex_lock_interruptible(&dev->struct_mutex);
1014 if (ret)
1015 return ret;
1016
1017 i915_destroy_error_state(dev);
1018 mutex_unlock(&dev->struct_mutex);
1019
1020 return cnt;
1021 }
1022
1023 static int i915_error_state_open(struct inode *inode, struct file *file)
1024 {
1025 struct drm_device *dev = inode->i_private;
1026 struct i915_error_state_file_priv *error_priv;
1027
1028 error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
1029 if (!error_priv)
1030 return -ENOMEM;
1031
1032 error_priv->dev = dev;
1033
1034 i915_error_state_get(dev, error_priv);
1035
1036 file->private_data = error_priv;
1037
1038 return 0;
1039 }
1040
1041 static int i915_error_state_release(struct inode *inode, struct file *file)
1042 {
1043 struct i915_error_state_file_priv *error_priv = file->private_data;
1044
1045 i915_error_state_put(error_priv);
1046 kfree(error_priv);
1047
1048 return 0;
1049 }
1050
1051 static ssize_t i915_error_state_read(struct file *file, char __user *userbuf,
1052 size_t count, loff_t *pos)
1053 {
1054 struct i915_error_state_file_priv *error_priv = file->private_data;
1055 struct drm_i915_error_state_buf error_str;
1056 loff_t tmp_pos = 0;
1057 ssize_t ret_count = 0;
1058 int ret;
1059
1060 ret = i915_error_state_buf_init(&error_str, to_i915(error_priv->dev), count, *pos);
1061 if (ret)
1062 return ret;
1063
1064 ret = i915_error_state_to_str(&error_str, error_priv);
1065 if (ret)
1066 goto out;
1067
1068 ret_count = simple_read_from_buffer(userbuf, count, &tmp_pos,
1069 error_str.buf,
1070 error_str.bytes);
1071
1072 if (ret_count < 0)
1073 ret = ret_count;
1074 else
1075 *pos = error_str.start + ret_count;
1076 out:
1077 i915_error_state_buf_release(&error_str);
1078 return ret ?: ret_count;
1079 }
1080
1081 static const struct file_operations i915_error_state_fops = {
1082 .owner = THIS_MODULE,
1083 .open = i915_error_state_open,
1084 .read = i915_error_state_read,
1085 .write = i915_error_state_write,
1086 .llseek = default_llseek,
1087 .release = i915_error_state_release,
1088 };
1089
1090 static int
1091 i915_next_seqno_get(void *data, u64 *val)
1092 {
1093 struct drm_device *dev = data;
1094 struct drm_i915_private *dev_priv = dev->dev_private;
1095 int ret;
1096
1097 ret = mutex_lock_interruptible(&dev->struct_mutex);
1098 if (ret)
1099 return ret;
1100
1101 *val = dev_priv->next_seqno;
1102 mutex_unlock(&dev->struct_mutex);
1103
1104 return 0;
1105 }
1106
1107 static int
1108 i915_next_seqno_set(void *data, u64 val)
1109 {
1110 struct drm_device *dev = data;
1111 int ret;
1112
1113 ret = mutex_lock_interruptible(&dev->struct_mutex);
1114 if (ret)
1115 return ret;
1116
1117 ret = i915_gem_set_seqno(dev, val);
1118 mutex_unlock(&dev->struct_mutex);
1119
1120 return ret;
1121 }
1122
1123 DEFINE_SIMPLE_ATTRIBUTE(i915_next_seqno_fops,
1124 i915_next_seqno_get, i915_next_seqno_set,
1125 "0x%llx\n");
1126
1127 static int i915_frequency_info(struct seq_file *m, void *unused)
1128 {
1129 struct drm_info_node *node = m->private;
1130 struct drm_device *dev = node->minor->dev;
1131 struct drm_i915_private *dev_priv = dev->dev_private;
1132 int ret = 0;
1133
1134 intel_runtime_pm_get(dev_priv);
1135
1136 flush_delayed_work(&dev_priv->rps.delayed_resume_work);
1137
1138 if (IS_GEN5(dev)) {
1139 u16 rgvswctl = I915_READ16(MEMSWCTL);
1140 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
1141
1142 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
1143 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
1144 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
1145 MEMSTAT_VID_SHIFT);
1146 seq_printf(m, "Current P-state: %d\n",
1147 (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
1148 } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
1149 u32 freq_sts;
1150
1151 mutex_lock(&dev_priv->rps.hw_lock);
1152 freq_sts = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
1153 seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
1154 seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
1155
1156 seq_printf(m, "actual GPU freq: %d MHz\n",
1157 intel_gpu_freq(dev_priv, (freq_sts >> 8) & 0xff));
1158
1159 seq_printf(m, "current GPU freq: %d MHz\n",
1160 intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq));
1161
1162 seq_printf(m, "max GPU freq: %d MHz\n",
1163 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
1164
1165 seq_printf(m, "min GPU freq: %d MHz\n",
1166 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq));
1167
1168 seq_printf(m, "idle GPU freq: %d MHz\n",
1169 intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq));
1170
1171 seq_printf(m,
1172 "efficient (RPe) frequency: %d MHz\n",
1173 intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq));
1174 mutex_unlock(&dev_priv->rps.hw_lock);
1175 } else if (INTEL_INFO(dev)->gen >= 6) {
1176 u32 rp_state_limits;
1177 u32 gt_perf_status;
1178 u32 rp_state_cap;
1179 u32 rpmodectl, rpinclimit, rpdeclimit;
1180 u32 rpstat, cagf, reqf;
1181 u32 rpupei, rpcurup, rpprevup;
1182 u32 rpdownei, rpcurdown, rpprevdown;
1183 u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
1184 int max_freq;
1185
1186 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
1187 if (IS_BROXTON(dev)) {
1188 rp_state_cap = I915_READ(BXT_RP_STATE_CAP);
1189 gt_perf_status = I915_READ(BXT_GT_PERF_STATUS);
1190 } else {
1191 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
1192 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
1193 }
1194
1195 /* RPSTAT1 is in the GT power well */
1196 ret = mutex_lock_interruptible(&dev->struct_mutex);
1197 if (ret)
1198 goto out;
1199
1200 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
1201
1202 reqf = I915_READ(GEN6_RPNSWREQ);
1203 if (IS_GEN9(dev))
1204 reqf >>= 23;
1205 else {
1206 reqf &= ~GEN6_TURBO_DISABLE;
1207 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
1208 reqf >>= 24;
1209 else
1210 reqf >>= 25;
1211 }
1212 reqf = intel_gpu_freq(dev_priv, reqf);
1213
1214 rpmodectl = I915_READ(GEN6_RP_CONTROL);
1215 rpinclimit = I915_READ(GEN6_RP_UP_THRESHOLD);
1216 rpdeclimit = I915_READ(GEN6_RP_DOWN_THRESHOLD);
1217
1218 rpstat = I915_READ(GEN6_RPSTAT1);
1219 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
1220 rpcurup = I915_READ(GEN6_RP_CUR_UP);
1221 rpprevup = I915_READ(GEN6_RP_PREV_UP);
1222 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
1223 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
1224 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
1225 if (IS_GEN9(dev))
1226 cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
1227 else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
1228 cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
1229 else
1230 cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
1231 cagf = intel_gpu_freq(dev_priv, cagf);
1232
1233 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
1234 mutex_unlock(&dev->struct_mutex);
1235
1236 if (IS_GEN6(dev) || IS_GEN7(dev)) {
1237 pm_ier = I915_READ(GEN6_PMIER);
1238 pm_imr = I915_READ(GEN6_PMIMR);
1239 pm_isr = I915_READ(GEN6_PMISR);
1240 pm_iir = I915_READ(GEN6_PMIIR);
1241 pm_mask = I915_READ(GEN6_PMINTRMSK);
1242 } else {
1243 pm_ier = I915_READ(GEN8_GT_IER(2));
1244 pm_imr = I915_READ(GEN8_GT_IMR(2));
1245 pm_isr = I915_READ(GEN8_GT_ISR(2));
1246 pm_iir = I915_READ(GEN8_GT_IIR(2));
1247 pm_mask = I915_READ(GEN6_PMINTRMSK);
1248 }
1249 seq_printf(m, "PM IER=0x%08x IMR=0x%08x ISR=0x%08x IIR=0x%08x, MASK=0x%08x\n",
1250 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask);
1251 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
1252 seq_printf(m, "Render p-state ratio: %d\n",
1253 (gt_perf_status & (IS_GEN9(dev) ? 0x1ff00 : 0xff00)) >> 8);
1254 seq_printf(m, "Render p-state VID: %d\n",
1255 gt_perf_status & 0xff);
1256 seq_printf(m, "Render p-state limit: %d\n",
1257 rp_state_limits & 0xff);
1258 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
1259 seq_printf(m, "RPMODECTL: 0x%08x\n", rpmodectl);
1260 seq_printf(m, "RPINCLIMIT: 0x%08x\n", rpinclimit);
1261 seq_printf(m, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
1262 seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
1263 seq_printf(m, "CAGF: %dMHz\n", cagf);
1264 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
1265 GEN6_CURICONT_MASK);
1266 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
1267 GEN6_CURBSYTAVG_MASK);
1268 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
1269 GEN6_CURBSYTAVG_MASK);
1270 seq_printf(m, "Up threshold: %d%%\n",
1271 dev_priv->rps.up_threshold);
1272
1273 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
1274 GEN6_CURIAVG_MASK);
1275 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
1276 GEN6_CURBSYTAVG_MASK);
1277 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
1278 GEN6_CURBSYTAVG_MASK);
1279 seq_printf(m, "Down threshold: %d%%\n",
1280 dev_priv->rps.down_threshold);
1281
1282 max_freq = (IS_BROXTON(dev) ? rp_state_cap >> 0 :
1283 rp_state_cap >> 16) & 0xff;
1284 max_freq *= (IS_SKYLAKE(dev) || IS_KABYLAKE(dev) ?
1285 GEN9_FREQ_SCALER : 1);
1286 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
1287 intel_gpu_freq(dev_priv, max_freq));
1288
1289 max_freq = (rp_state_cap & 0xff00) >> 8;
1290 max_freq *= (IS_SKYLAKE(dev) || IS_KABYLAKE(dev) ?
1291 GEN9_FREQ_SCALER : 1);
1292 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
1293 intel_gpu_freq(dev_priv, max_freq));
1294
1295 max_freq = (IS_BROXTON(dev) ? rp_state_cap >> 16 :
1296 rp_state_cap >> 0) & 0xff;
1297 max_freq *= (IS_SKYLAKE(dev) || IS_KABYLAKE(dev) ?
1298 GEN9_FREQ_SCALER : 1);
1299 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
1300 intel_gpu_freq(dev_priv, max_freq));
1301 seq_printf(m, "Max overclocked frequency: %dMHz\n",
1302 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
1303
1304 seq_printf(m, "Current freq: %d MHz\n",
1305 intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq));
1306 seq_printf(m, "Actual freq: %d MHz\n", cagf);
1307 seq_printf(m, "Idle freq: %d MHz\n",
1308 intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq));
1309 seq_printf(m, "Min freq: %d MHz\n",
1310 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq));
1311 seq_printf(m, "Max freq: %d MHz\n",
1312 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
1313 seq_printf(m,
1314 "efficient (RPe) frequency: %d MHz\n",
1315 intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq));
1316 } else {
1317 seq_puts(m, "no P-state info available\n");
1318 }
1319
1320 seq_printf(m, "Current CD clock frequency: %d kHz\n", dev_priv->cdclk_freq);
1321 seq_printf(m, "Max CD clock frequency: %d kHz\n", dev_priv->max_cdclk_freq);
1322 seq_printf(m, "Max pixel clock frequency: %d kHz\n", dev_priv->max_dotclk_freq);
1323
1324 out:
1325 intel_runtime_pm_put(dev_priv);
1326 return ret;
1327 }
1328
1329 static int i915_hangcheck_info(struct seq_file *m, void *unused)
1330 {
1331 struct drm_info_node *node = m->private;
1332 struct drm_device *dev = node->minor->dev;
1333 struct drm_i915_private *dev_priv = dev->dev_private;
1334 struct intel_engine_cs *engine;
1335 u64 acthd[I915_NUM_ENGINES];
1336 u32 seqno[I915_NUM_ENGINES];
1337 u32 instdone[I915_NUM_INSTDONE_REG];
1338 enum intel_engine_id id;
1339 int j;
1340
1341 if (!i915.enable_hangcheck) {
1342 seq_printf(m, "Hangcheck disabled\n");
1343 return 0;
1344 }
1345
1346 intel_runtime_pm_get(dev_priv);
1347
1348 for_each_engine_id(engine, dev_priv, id) {
1349 seqno[id] = engine->get_seqno(engine, false);
1350 acthd[id] = intel_ring_get_active_head(engine);
1351 }
1352
1353 i915_get_extra_instdone(dev, instdone);
1354
1355 intel_runtime_pm_put(dev_priv);
1356
1357 if (delayed_work_pending(&dev_priv->gpu_error.hangcheck_work)) {
1358 seq_printf(m, "Hangcheck active, fires in %dms\n",
1359 jiffies_to_msecs(dev_priv->gpu_error.hangcheck_work.timer.expires -
1360 jiffies));
1361 } else
1362 seq_printf(m, "Hangcheck inactive\n");
1363
1364 for_each_engine_id(engine, dev_priv, id) {
1365 seq_printf(m, "%s:\n", engine->name);
1366 seq_printf(m, "\tseqno = %x [current %x]\n",
1367 engine->hangcheck.seqno, seqno[id]);
1368 seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n",
1369 (long long)engine->hangcheck.acthd,
1370 (long long)acthd[id]);
1371 seq_printf(m, "\tscore = %d\n", engine->hangcheck.score);
1372 seq_printf(m, "\taction = %d\n", engine->hangcheck.action);
1373
1374 if (engine->id == RCS) {
1375 seq_puts(m, "\tinstdone read =");
1376
1377 for (j = 0; j < I915_NUM_INSTDONE_REG; j++)
1378 seq_printf(m, " 0x%08x", instdone[j]);
1379
1380 seq_puts(m, "\n\tinstdone accu =");
1381
1382 for (j = 0; j < I915_NUM_INSTDONE_REG; j++)
1383 seq_printf(m, " 0x%08x",
1384 engine->hangcheck.instdone[j]);
1385
1386 seq_puts(m, "\n");
1387 }
1388 }
1389
1390 return 0;
1391 }
1392
1393 static int ironlake_drpc_info(struct seq_file *m)
1394 {
1395 struct drm_info_node *node = m->private;
1396 struct drm_device *dev = node->minor->dev;
1397 struct drm_i915_private *dev_priv = dev->dev_private;
1398 u32 rgvmodectl, rstdbyctl;
1399 u16 crstandvid;
1400 int ret;
1401
1402 ret = mutex_lock_interruptible(&dev->struct_mutex);
1403 if (ret)
1404 return ret;
1405 intel_runtime_pm_get(dev_priv);
1406
1407 rgvmodectl = I915_READ(MEMMODECTL);
1408 rstdbyctl = I915_READ(RSTDBYCTL);
1409 crstandvid = I915_READ16(CRSTANDVID);
1410
1411 intel_runtime_pm_put(dev_priv);
1412 mutex_unlock(&dev->struct_mutex);
1413
1414 seq_printf(m, "HD boost: %s\n", yesno(rgvmodectl & MEMMODE_BOOST_EN));
1415 seq_printf(m, "Boost freq: %d\n",
1416 (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1417 MEMMODE_BOOST_FREQ_SHIFT);
1418 seq_printf(m, "HW control enabled: %s\n",
1419 yesno(rgvmodectl & MEMMODE_HWIDLE_EN));
1420 seq_printf(m, "SW control enabled: %s\n",
1421 yesno(rgvmodectl & MEMMODE_SWMODE_EN));
1422 seq_printf(m, "Gated voltage change: %s\n",
1423 yesno(rgvmodectl & MEMMODE_RCLK_GATE));
1424 seq_printf(m, "Starting frequency: P%d\n",
1425 (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1426 seq_printf(m, "Max P-state: P%d\n",
1427 (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1428 seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1429 seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1430 seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1431 seq_printf(m, "Render standby enabled: %s\n",
1432 yesno(!(rstdbyctl & RCX_SW_EXIT)));
1433 seq_puts(m, "Current RS state: ");
1434 switch (rstdbyctl & RSX_STATUS_MASK) {
1435 case RSX_STATUS_ON:
1436 seq_puts(m, "on\n");
1437 break;
1438 case RSX_STATUS_RC1:
1439 seq_puts(m, "RC1\n");
1440 break;
1441 case RSX_STATUS_RC1E:
1442 seq_puts(m, "RC1E\n");
1443 break;
1444 case RSX_STATUS_RS1:
1445 seq_puts(m, "RS1\n");
1446 break;
1447 case RSX_STATUS_RS2:
1448 seq_puts(m, "RS2 (RC6)\n");
1449 break;
1450 case RSX_STATUS_RS3:
1451 seq_puts(m, "RC3 (RC6+)\n");
1452 break;
1453 default:
1454 seq_puts(m, "unknown\n");
1455 break;
1456 }
1457
1458 return 0;
1459 }
1460
1461 static int i915_forcewake_domains(struct seq_file *m, void *data)
1462 {
1463 struct drm_info_node *node = m->private;
1464 struct drm_device *dev = node->minor->dev;
1465 struct drm_i915_private *dev_priv = dev->dev_private;
1466 struct intel_uncore_forcewake_domain *fw_domain;
1467 int i;
1468
1469 spin_lock_irq(&dev_priv->uncore.lock);
1470 for_each_fw_domain(fw_domain, dev_priv, i) {
1471 seq_printf(m, "%s.wake_count = %u\n",
1472 intel_uncore_forcewake_domain_to_str(i),
1473 fw_domain->wake_count);
1474 }
1475 spin_unlock_irq(&dev_priv->uncore.lock);
1476
1477 return 0;
1478 }
1479
1480 static int vlv_drpc_info(struct seq_file *m)
1481 {
1482 struct drm_info_node *node = m->private;
1483 struct drm_device *dev = node->minor->dev;
1484 struct drm_i915_private *dev_priv = dev->dev_private;
1485 u32 rpmodectl1, rcctl1, pw_status;
1486
1487 intel_runtime_pm_get(dev_priv);
1488
1489 pw_status = I915_READ(VLV_GTLC_PW_STATUS);
1490 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1491 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1492
1493 intel_runtime_pm_put(dev_priv);
1494
1495 seq_printf(m, "Video Turbo Mode: %s\n",
1496 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1497 seq_printf(m, "Turbo enabled: %s\n",
1498 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1499 seq_printf(m, "HW control enabled: %s\n",
1500 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1501 seq_printf(m, "SW control enabled: %s\n",
1502 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1503 GEN6_RP_MEDIA_SW_MODE));
1504 seq_printf(m, "RC6 Enabled: %s\n",
1505 yesno(rcctl1 & (GEN7_RC_CTL_TO_MODE |
1506 GEN6_RC_CTL_EI_MODE(1))));
1507 seq_printf(m, "Render Power Well: %s\n",
1508 (pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
1509 seq_printf(m, "Media Power Well: %s\n",
1510 (pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");
1511
1512 seq_printf(m, "Render RC6 residency since boot: %u\n",
1513 I915_READ(VLV_GT_RENDER_RC6));
1514 seq_printf(m, "Media RC6 residency since boot: %u\n",
1515 I915_READ(VLV_GT_MEDIA_RC6));
1516
1517 return i915_forcewake_domains(m, NULL);
1518 }
1519
1520 static int gen6_drpc_info(struct seq_file *m)
1521 {
1522 struct drm_info_node *node = m->private;
1523 struct drm_device *dev = node->minor->dev;
1524 struct drm_i915_private *dev_priv = dev->dev_private;
1525 u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1526 unsigned forcewake_count;
1527 int count = 0, ret;
1528
1529 ret = mutex_lock_interruptible(&dev->struct_mutex);
1530 if (ret)
1531 return ret;
1532 intel_runtime_pm_get(dev_priv);
1533
1534 spin_lock_irq(&dev_priv->uncore.lock);
1535 forcewake_count = dev_priv->uncore.fw_domain[FW_DOMAIN_ID_RENDER].wake_count;
1536 spin_unlock_irq(&dev_priv->uncore.lock);
1537
1538 if (forcewake_count) {
1539 seq_puts(m, "RC information inaccurate because somebody "
1540 "holds a forcewake reference \n");
1541 } else {
1542 /* NB: we cannot use forcewake, else we read the wrong values */
1543 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1544 udelay(10);
1545 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1546 }
1547
1548 gt_core_status = I915_READ_FW(GEN6_GT_CORE_STATUS);
1549 trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4, true);
1550
1551 rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1552 rcctl1 = I915_READ(GEN6_RC_CONTROL);
1553 mutex_unlock(&dev->struct_mutex);
1554 mutex_lock(&dev_priv->rps.hw_lock);
1555 sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1556 mutex_unlock(&dev_priv->rps.hw_lock);
1557
1558 intel_runtime_pm_put(dev_priv);
1559
1560 seq_printf(m, "Video Turbo Mode: %s\n",
1561 yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1562 seq_printf(m, "HW control enabled: %s\n",
1563 yesno(rpmodectl1 & GEN6_RP_ENABLE));
1564 seq_printf(m, "SW control enabled: %s\n",
1565 yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1566 GEN6_RP_MEDIA_SW_MODE));
1567 seq_printf(m, "RC1e Enabled: %s\n",
1568 yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1569 seq_printf(m, "RC6 Enabled: %s\n",
1570 yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1571 seq_printf(m, "Deep RC6 Enabled: %s\n",
1572 yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1573 seq_printf(m, "Deepest RC6 Enabled: %s\n",
1574 yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1575 seq_puts(m, "Current RC state: ");
1576 switch (gt_core_status & GEN6_RCn_MASK) {
1577 case GEN6_RC0:
1578 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1579 seq_puts(m, "Core Power Down\n");
1580 else
1581 seq_puts(m, "on\n");
1582 break;
1583 case GEN6_RC3:
1584 seq_puts(m, "RC3\n");
1585 break;
1586 case GEN6_RC6:
1587 seq_puts(m, "RC6\n");
1588 break;
1589 case GEN6_RC7:
1590 seq_puts(m, "RC7\n");
1591 break;
1592 default:
1593 seq_puts(m, "Unknown\n");
1594 break;
1595 }
1596
1597 seq_printf(m, "Core Power Down: %s\n",
1598 yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1599
1600 /* Not exactly sure what this is */
1601 seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1602 I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1603 seq_printf(m, "RC6 residency since boot: %u\n",
1604 I915_READ(GEN6_GT_GFX_RC6));
1605 seq_printf(m, "RC6+ residency since boot: %u\n",
1606 I915_READ(GEN6_GT_GFX_RC6p));
1607 seq_printf(m, "RC6++ residency since boot: %u\n",
1608 I915_READ(GEN6_GT_GFX_RC6pp));
1609
1610 seq_printf(m, "RC6 voltage: %dmV\n",
1611 GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1612 seq_printf(m, "RC6+ voltage: %dmV\n",
1613 GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1614 seq_printf(m, "RC6++ voltage: %dmV\n",
1615 GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1616 return 0;
1617 }
1618
1619 static int i915_drpc_info(struct seq_file *m, void *unused)
1620 {
1621 struct drm_info_node *node = m->private;
1622 struct drm_device *dev = node->minor->dev;
1623
1624 if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
1625 return vlv_drpc_info(m);
1626 else if (INTEL_INFO(dev)->gen >= 6)
1627 return gen6_drpc_info(m);
1628 else
1629 return ironlake_drpc_info(m);
1630 }
1631
1632 static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
1633 {
1634 struct drm_info_node *node = m->private;
1635 struct drm_device *dev = node->minor->dev;
1636 struct drm_i915_private *dev_priv = dev->dev_private;
1637
1638 seq_printf(m, "FB tracking busy bits: 0x%08x\n",
1639 dev_priv->fb_tracking.busy_bits);
1640
1641 seq_printf(m, "FB tracking flip bits: 0x%08x\n",
1642 dev_priv->fb_tracking.flip_bits);
1643
1644 return 0;
1645 }
1646
1647 static int i915_fbc_status(struct seq_file *m, void *unused)
1648 {
1649 struct drm_info_node *node = m->private;
1650 struct drm_device *dev = node->minor->dev;
1651 struct drm_i915_private *dev_priv = dev->dev_private;
1652
1653 if (!HAS_FBC(dev)) {
1654 seq_puts(m, "FBC unsupported on this chipset\n");
1655 return 0;
1656 }
1657
1658 intel_runtime_pm_get(dev_priv);
1659 mutex_lock(&dev_priv->fbc.lock);
1660
1661 if (intel_fbc_is_active(dev_priv))
1662 seq_puts(m, "FBC enabled\n");
1663 else
1664 seq_printf(m, "FBC disabled: %s\n",
1665 dev_priv->fbc.no_fbc_reason);
1666
1667 if (INTEL_INFO(dev_priv)->gen >= 7)
1668 seq_printf(m, "Compressing: %s\n",
1669 yesno(I915_READ(FBC_STATUS2) &
1670 FBC_COMPRESSION_MASK));
1671
1672 mutex_unlock(&dev_priv->fbc.lock);
1673 intel_runtime_pm_put(dev_priv);
1674
1675 return 0;
1676 }
1677
1678 static int i915_fbc_fc_get(void *data, u64 *val)
1679 {
1680 struct drm_device *dev = data;
1681 struct drm_i915_private *dev_priv = dev->dev_private;
1682
1683 if (INTEL_INFO(dev)->gen < 7 || !HAS_FBC(dev))
1684 return -ENODEV;
1685
1686 *val = dev_priv->fbc.false_color;
1687
1688 return 0;
1689 }
1690
1691 static int i915_fbc_fc_set(void *data, u64 val)
1692 {
1693 struct drm_device *dev = data;
1694 struct drm_i915_private *dev_priv = dev->dev_private;
1695 u32 reg;
1696
1697 if (INTEL_INFO(dev)->gen < 7 || !HAS_FBC(dev))
1698 return -ENODEV;
1699
1700 mutex_lock(&dev_priv->fbc.lock);
1701
1702 reg = I915_READ(ILK_DPFC_CONTROL);
1703 dev_priv->fbc.false_color = val;
1704
1705 I915_WRITE(ILK_DPFC_CONTROL, val ?
1706 (reg | FBC_CTL_FALSE_COLOR) :
1707 (reg & ~FBC_CTL_FALSE_COLOR));
1708
1709 mutex_unlock(&dev_priv->fbc.lock);
1710 return 0;
1711 }
1712
1713 DEFINE_SIMPLE_ATTRIBUTE(i915_fbc_fc_fops,
1714 i915_fbc_fc_get, i915_fbc_fc_set,
1715 "%llu\n");
1716
1717 static int i915_ips_status(struct seq_file *m, void *unused)
1718 {
1719 struct drm_info_node *node = m->private;
1720 struct drm_device *dev = node->minor->dev;
1721 struct drm_i915_private *dev_priv = dev->dev_private;
1722
1723 if (!HAS_IPS(dev)) {
1724 seq_puts(m, "not supported\n");
1725 return 0;
1726 }
1727
1728 intel_runtime_pm_get(dev_priv);
1729
1730 seq_printf(m, "Enabled by kernel parameter: %s\n",
1731 yesno(i915.enable_ips));
1732
1733 if (INTEL_INFO(dev)->gen >= 8) {
1734 seq_puts(m, "Currently: unknown\n");
1735 } else {
1736 if (I915_READ(IPS_CTL) & IPS_ENABLE)
1737 seq_puts(m, "Currently: enabled\n");
1738 else
1739 seq_puts(m, "Currently: disabled\n");
1740 }
1741
1742 intel_runtime_pm_put(dev_priv);
1743
1744 return 0;
1745 }
1746
1747 static int i915_sr_status(struct seq_file *m, void *unused)
1748 {
1749 struct drm_info_node *node = m->private;
1750 struct drm_device *dev = node->minor->dev;
1751 struct drm_i915_private *dev_priv = dev->dev_private;
1752 bool sr_enabled = false;
1753
1754 intel_runtime_pm_get(dev_priv);
1755
1756 if (HAS_PCH_SPLIT(dev))
1757 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1758 else if (IS_CRESTLINE(dev) || IS_G4X(dev) ||
1759 IS_I945G(dev) || IS_I945GM(dev))
1760 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1761 else if (IS_I915GM(dev))
1762 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1763 else if (IS_PINEVIEW(dev))
1764 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1765 else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
1766 sr_enabled = I915_READ(FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
1767
1768 intel_runtime_pm_put(dev_priv);
1769
1770 seq_printf(m, "self-refresh: %s\n",
1771 sr_enabled ? "enabled" : "disabled");
1772
1773 return 0;
1774 }
1775
1776 static int i915_emon_status(struct seq_file *m, void *unused)
1777 {
1778 struct drm_info_node *node = m->private;
1779 struct drm_device *dev = node->minor->dev;
1780 struct drm_i915_private *dev_priv = dev->dev_private;
1781 unsigned long temp, chipset, gfx;
1782 int ret;
1783
1784 if (!IS_GEN5(dev))
1785 return -ENODEV;
1786
1787 ret = mutex_lock_interruptible(&dev->struct_mutex);
1788 if (ret)
1789 return ret;
1790
1791 temp = i915_mch_val(dev_priv);
1792 chipset = i915_chipset_val(dev_priv);
1793 gfx = i915_gfx_val(dev_priv);
1794 mutex_unlock(&dev->struct_mutex);
1795
1796 seq_printf(m, "GMCH temp: %ld\n", temp);
1797 seq_printf(m, "Chipset power: %ld\n", chipset);
1798 seq_printf(m, "GFX power: %ld\n", gfx);
1799 seq_printf(m, "Total power: %ld\n", chipset + gfx);
1800
1801 return 0;
1802 }
1803
1804 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1805 {
1806 struct drm_info_node *node = m->private;
1807 struct drm_device *dev = node->minor->dev;
1808 struct drm_i915_private *dev_priv = dev->dev_private;
1809 int ret = 0;
1810 int gpu_freq, ia_freq;
1811 unsigned int max_gpu_freq, min_gpu_freq;
1812
1813 if (!HAS_CORE_RING_FREQ(dev)) {
1814 seq_puts(m, "unsupported on this chipset\n");
1815 return 0;
1816 }
1817
1818 intel_runtime_pm_get(dev_priv);
1819
1820 flush_delayed_work(&dev_priv->rps.delayed_resume_work);
1821
1822 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1823 if (ret)
1824 goto out;
1825
1826 if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
1827 /* Convert GT frequency to 50 HZ units */
1828 min_gpu_freq =
1829 dev_priv->rps.min_freq_softlimit / GEN9_FREQ_SCALER;
1830 max_gpu_freq =
1831 dev_priv->rps.max_freq_softlimit / GEN9_FREQ_SCALER;
1832 } else {
1833 min_gpu_freq = dev_priv->rps.min_freq_softlimit;
1834 max_gpu_freq = dev_priv->rps.max_freq_softlimit;
1835 }
1836
1837 seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
1838
1839 for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
1840 ia_freq = gpu_freq;
1841 sandybridge_pcode_read(dev_priv,
1842 GEN6_PCODE_READ_MIN_FREQ_TABLE,
1843 &ia_freq);
1844 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
1845 intel_gpu_freq(dev_priv, (gpu_freq *
1846 (IS_SKYLAKE(dev) || IS_KABYLAKE(dev) ?
1847 GEN9_FREQ_SCALER : 1))),
1848 ((ia_freq >> 0) & 0xff) * 100,
1849 ((ia_freq >> 8) & 0xff) * 100);
1850 }
1851
1852 mutex_unlock(&dev_priv->rps.hw_lock);
1853
1854 out:
1855 intel_runtime_pm_put(dev_priv);
1856 return ret;
1857 }
1858
1859 static int i915_opregion(struct seq_file *m, void *unused)
1860 {
1861 struct drm_info_node *node = m->private;
1862 struct drm_device *dev = node->minor->dev;
1863 struct drm_i915_private *dev_priv = dev->dev_private;
1864 struct intel_opregion *opregion = &dev_priv->opregion;
1865 int ret;
1866
1867 ret = mutex_lock_interruptible(&dev->struct_mutex);
1868 if (ret)
1869 goto out;
1870
1871 if (opregion->header)
1872 seq_write(m, opregion->header, OPREGION_SIZE);
1873
1874 mutex_unlock(&dev->struct_mutex);
1875
1876 out:
1877 return 0;
1878 }
1879
1880 static int i915_vbt(struct seq_file *m, void *unused)
1881 {
1882 struct drm_info_node *node = m->private;
1883 struct drm_device *dev = node->minor->dev;
1884 struct drm_i915_private *dev_priv = dev->dev_private;
1885 struct intel_opregion *opregion = &dev_priv->opregion;
1886
1887 if (opregion->vbt)
1888 seq_write(m, opregion->vbt, opregion->vbt_size);
1889
1890 return 0;
1891 }
1892
1893 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1894 {
1895 struct drm_info_node *node = m->private;
1896 struct drm_device *dev = node->minor->dev;
1897 struct intel_framebuffer *fbdev_fb = NULL;
1898 struct drm_framebuffer *drm_fb;
1899 int ret;
1900
1901 ret = mutex_lock_interruptible(&dev->struct_mutex);
1902 if (ret)
1903 return ret;
1904
1905 #ifdef CONFIG_DRM_FBDEV_EMULATION
1906 if (to_i915(dev)->fbdev) {
1907 fbdev_fb = to_intel_framebuffer(to_i915(dev)->fbdev->helper.fb);
1908
1909 seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
1910 fbdev_fb->base.width,
1911 fbdev_fb->base.height,
1912 fbdev_fb->base.depth,
1913 fbdev_fb->base.bits_per_pixel,
1914 fbdev_fb->base.modifier[0],
1915 atomic_read(&fbdev_fb->base.refcount.refcount));
1916 describe_obj(m, fbdev_fb->obj);
1917 seq_putc(m, '\n');
1918 }
1919 #endif
1920
1921 mutex_lock(&dev->mode_config.fb_lock);
1922 drm_for_each_fb(drm_fb, dev) {
1923 struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
1924 if (fb == fbdev_fb)
1925 continue;
1926
1927 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
1928 fb->base.width,
1929 fb->base.height,
1930 fb->base.depth,
1931 fb->base.bits_per_pixel,
1932 fb->base.modifier[0],
1933 atomic_read(&fb->base.refcount.refcount));
1934 describe_obj(m, fb->obj);
1935 seq_putc(m, '\n');
1936 }
1937 mutex_unlock(&dev->mode_config.fb_lock);
1938 mutex_unlock(&dev->struct_mutex);
1939
1940 return 0;
1941 }
1942
1943 static void describe_ctx_ringbuf(struct seq_file *m,
1944 struct intel_ringbuffer *ringbuf)
1945 {
1946 seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, last head: %d)",
1947 ringbuf->space, ringbuf->head, ringbuf->tail,
1948 ringbuf->last_retired_head);
1949 }
1950
1951 static int i915_context_status(struct seq_file *m, void *unused)
1952 {
1953 struct drm_info_node *node = m->private;
1954 struct drm_device *dev = node->minor->dev;
1955 struct drm_i915_private *dev_priv = dev->dev_private;
1956 struct intel_engine_cs *engine;
1957 struct intel_context *ctx;
1958 enum intel_engine_id id;
1959 int ret;
1960
1961 ret = mutex_lock_interruptible(&dev->struct_mutex);
1962 if (ret)
1963 return ret;
1964
1965 list_for_each_entry(ctx, &dev_priv->context_list, link) {
1966 if (!i915.enable_execlists &&
1967 ctx->legacy_hw_ctx.rcs_state == NULL)
1968 continue;
1969
1970 seq_puts(m, "HW context ");
1971 describe_ctx(m, ctx);
1972 if (ctx == dev_priv->kernel_context)
1973 seq_printf(m, "(kernel context) ");
1974
1975 if (i915.enable_execlists) {
1976 seq_putc(m, '\n');
1977 for_each_engine_id(engine, dev_priv, id) {
1978 struct drm_i915_gem_object *ctx_obj =
1979 ctx->engine[id].state;
1980 struct intel_ringbuffer *ringbuf =
1981 ctx->engine[id].ringbuf;
1982
1983 seq_printf(m, "%s: ", engine->name);
1984 if (ctx_obj)
1985 describe_obj(m, ctx_obj);
1986 if (ringbuf)
1987 describe_ctx_ringbuf(m, ringbuf);
1988 seq_putc(m, '\n');
1989 }
1990 } else {
1991 describe_obj(m, ctx->legacy_hw_ctx.rcs_state);
1992 }
1993
1994 seq_putc(m, '\n');
1995 }
1996
1997 mutex_unlock(&dev->struct_mutex);
1998
1999 return 0;
2000 }
2001
2002 static void i915_dump_lrc_obj(struct seq_file *m,
2003 struct intel_context *ctx,
2004 struct intel_engine_cs *engine)
2005 {
2006 struct page *page;
2007 uint32_t *reg_state;
2008 int j;
2009 struct drm_i915_gem_object *ctx_obj = ctx->engine[engine->id].state;
2010 unsigned long ggtt_offset = 0;
2011
2012 if (ctx_obj == NULL) {
2013 seq_printf(m, "Context on %s with no gem object\n",
2014 engine->name);
2015 return;
2016 }
2017
2018 seq_printf(m, "CONTEXT: %s %u\n", engine->name,
2019 intel_execlists_ctx_id(ctx, engine));
2020
2021 if (!i915_gem_obj_ggtt_bound(ctx_obj))
2022 seq_puts(m, "\tNot bound in GGTT\n");
2023 else
2024 ggtt_offset = i915_gem_obj_ggtt_offset(ctx_obj);
2025
2026 if (i915_gem_object_get_pages(ctx_obj)) {
2027 seq_puts(m, "\tFailed to get pages for context object\n");
2028 return;
2029 }
2030
2031 page = i915_gem_object_get_page(ctx_obj, LRC_STATE_PN);
2032 if (!WARN_ON(page == NULL)) {
2033 reg_state = kmap_atomic(page);
2034
2035 for (j = 0; j < 0x600 / sizeof(u32) / 4; j += 4) {
2036 seq_printf(m, "\t[0x%08lx] 0x%08x 0x%08x 0x%08x 0x%08x\n",
2037 ggtt_offset + 4096 + (j * 4),
2038 reg_state[j], reg_state[j + 1],
2039 reg_state[j + 2], reg_state[j + 3]);
2040 }
2041 kunmap_atomic(reg_state);
2042 }
2043
2044 seq_putc(m, '\n');
2045 }
2046
2047 static int i915_dump_lrc(struct seq_file *m, void *unused)
2048 {
2049 struct drm_info_node *node = (struct drm_info_node *) m->private;
2050 struct drm_device *dev = node->minor->dev;
2051 struct drm_i915_private *dev_priv = dev->dev_private;
2052 struct intel_engine_cs *engine;
2053 struct intel_context *ctx;
2054 int ret;
2055
2056 if (!i915.enable_execlists) {
2057 seq_printf(m, "Logical Ring Contexts are disabled\n");
2058 return 0;
2059 }
2060
2061 ret = mutex_lock_interruptible(&dev->struct_mutex);
2062 if (ret)
2063 return ret;
2064
2065 list_for_each_entry(ctx, &dev_priv->context_list, link)
2066 if (ctx != dev_priv->kernel_context)
2067 for_each_engine(engine, dev_priv)
2068 i915_dump_lrc_obj(m, ctx, engine);
2069
2070 mutex_unlock(&dev->struct_mutex);
2071
2072 return 0;
2073 }
2074
2075 static int i915_execlists(struct seq_file *m, void *data)
2076 {
2077 struct drm_info_node *node = (struct drm_info_node *)m->private;
2078 struct drm_device *dev = node->minor->dev;
2079 struct drm_i915_private *dev_priv = dev->dev_private;
2080 struct intel_engine_cs *engine;
2081 u32 status_pointer;
2082 u8 read_pointer;
2083 u8 write_pointer;
2084 u32 status;
2085 u32 ctx_id;
2086 struct list_head *cursor;
2087 int i, ret;
2088
2089 if (!i915.enable_execlists) {
2090 seq_puts(m, "Logical Ring Contexts are disabled\n");
2091 return 0;
2092 }
2093
2094 ret = mutex_lock_interruptible(&dev->struct_mutex);
2095 if (ret)
2096 return ret;
2097
2098 intel_runtime_pm_get(dev_priv);
2099
2100 for_each_engine(engine, dev_priv) {
2101 struct drm_i915_gem_request *head_req = NULL;
2102 int count = 0;
2103 unsigned long flags;
2104
2105 seq_printf(m, "%s\n", engine->name);
2106
2107 status = I915_READ(RING_EXECLIST_STATUS_LO(engine));
2108 ctx_id = I915_READ(RING_EXECLIST_STATUS_HI(engine));
2109 seq_printf(m, "\tExeclist status: 0x%08X, context: %u\n",
2110 status, ctx_id);
2111
2112 status_pointer = I915_READ(RING_CONTEXT_STATUS_PTR(engine));
2113 seq_printf(m, "\tStatus pointer: 0x%08X\n", status_pointer);
2114
2115 read_pointer = engine->next_context_status_buffer;
2116 write_pointer = GEN8_CSB_WRITE_PTR(status_pointer);
2117 if (read_pointer > write_pointer)
2118 write_pointer += GEN8_CSB_ENTRIES;
2119 seq_printf(m, "\tRead pointer: 0x%08X, write pointer 0x%08X\n",
2120 read_pointer, write_pointer);
2121
2122 for (i = 0; i < GEN8_CSB_ENTRIES; i++) {
2123 status = I915_READ(RING_CONTEXT_STATUS_BUF_LO(engine, i));
2124 ctx_id = I915_READ(RING_CONTEXT_STATUS_BUF_HI(engine, i));
2125
2126 seq_printf(m, "\tStatus buffer %d: 0x%08X, context: %u\n",
2127 i, status, ctx_id);
2128 }
2129
2130 spin_lock_irqsave(&engine->execlist_lock, flags);
2131 list_for_each(cursor, &engine->execlist_queue)
2132 count++;
2133 head_req = list_first_entry_or_null(&engine->execlist_queue,
2134 struct drm_i915_gem_request,
2135 execlist_link);
2136 spin_unlock_irqrestore(&engine->execlist_lock, flags);
2137
2138 seq_printf(m, "\t%d requests in queue\n", count);
2139 if (head_req) {
2140 seq_printf(m, "\tHead request id: %u\n",
2141 intel_execlists_ctx_id(head_req->ctx, engine));
2142 seq_printf(m, "\tHead request tail: %u\n",
2143 head_req->tail);
2144 }
2145
2146 seq_putc(m, '\n');
2147 }
2148
2149 intel_runtime_pm_put(dev_priv);
2150 mutex_unlock(&dev->struct_mutex);
2151
2152 return 0;
2153 }
2154
2155 static const char *swizzle_string(unsigned swizzle)
2156 {
2157 switch (swizzle) {
2158 case I915_BIT_6_SWIZZLE_NONE:
2159 return "none";
2160 case I915_BIT_6_SWIZZLE_9:
2161 return "bit9";
2162 case I915_BIT_6_SWIZZLE_9_10:
2163 return "bit9/bit10";
2164 case I915_BIT_6_SWIZZLE_9_11:
2165 return "bit9/bit11";
2166 case I915_BIT_6_SWIZZLE_9_10_11:
2167 return "bit9/bit10/bit11";
2168 case I915_BIT_6_SWIZZLE_9_17:
2169 return "bit9/bit17";
2170 case I915_BIT_6_SWIZZLE_9_10_17:
2171 return "bit9/bit10/bit17";
2172 case I915_BIT_6_SWIZZLE_UNKNOWN:
2173 return "unknown";
2174 }
2175
2176 return "bug";
2177 }
2178
2179 static int i915_swizzle_info(struct seq_file *m, void *data)
2180 {
2181 struct drm_info_node *node = m->private;
2182 struct drm_device *dev = node->minor->dev;
2183 struct drm_i915_private *dev_priv = dev->dev_private;
2184 int ret;
2185
2186 ret = mutex_lock_interruptible(&dev->struct_mutex);
2187 if (ret)
2188 return ret;
2189 intel_runtime_pm_get(dev_priv);
2190
2191 seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
2192 swizzle_string(dev_priv->mm.bit_6_swizzle_x));
2193 seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
2194 swizzle_string(dev_priv->mm.bit_6_swizzle_y));
2195
2196 if (IS_GEN3(dev) || IS_GEN4(dev)) {
2197 seq_printf(m, "DDC = 0x%08x\n",
2198 I915_READ(DCC));
2199 seq_printf(m, "DDC2 = 0x%08x\n",
2200 I915_READ(DCC2));
2201 seq_printf(m, "C0DRB3 = 0x%04x\n",
2202 I915_READ16(C0DRB3));
2203 seq_printf(m, "C1DRB3 = 0x%04x\n",
2204 I915_READ16(C1DRB3));
2205 } else if (INTEL_INFO(dev)->gen >= 6) {
2206 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
2207 I915_READ(MAD_DIMM_C0));
2208 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
2209 I915_READ(MAD_DIMM_C1));
2210 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
2211 I915_READ(MAD_DIMM_C2));
2212 seq_printf(m, "TILECTL = 0x%08x\n",
2213 I915_READ(TILECTL));
2214 if (INTEL_INFO(dev)->gen >= 8)
2215 seq_printf(m, "GAMTARBMODE = 0x%08x\n",
2216 I915_READ(GAMTARBMODE));
2217 else
2218 seq_printf(m, "ARB_MODE = 0x%08x\n",
2219 I915_READ(ARB_MODE));
2220 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
2221 I915_READ(DISP_ARB_CTL));
2222 }
2223
2224 if (dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES)
2225 seq_puts(m, "L-shaped memory detected\n");
2226
2227 intel_runtime_pm_put(dev_priv);
2228 mutex_unlock(&dev->struct_mutex);
2229
2230 return 0;
2231 }
2232
2233 static int per_file_ctx(int id, void *ptr, void *data)
2234 {
2235 struct intel_context *ctx = ptr;
2236 struct seq_file *m = data;
2237 struct i915_hw_ppgtt *ppgtt = ctx->ppgtt;
2238
2239 if (!ppgtt) {
2240 seq_printf(m, " no ppgtt for context %d\n",
2241 ctx->user_handle);
2242 return 0;
2243 }
2244
2245 if (i915_gem_context_is_default(ctx))
2246 seq_puts(m, " default context:\n");
2247 else
2248 seq_printf(m, " context %d:\n", ctx->user_handle);
2249 ppgtt->debug_dump(ppgtt, m);
2250
2251 return 0;
2252 }
2253
2254 static void gen8_ppgtt_info(struct seq_file *m, struct drm_device *dev)
2255 {
2256 struct drm_i915_private *dev_priv = dev->dev_private;
2257 struct intel_engine_cs *engine;
2258 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
2259 int i;
2260
2261 if (!ppgtt)
2262 return;
2263
2264 for_each_engine(engine, dev_priv) {
2265 seq_printf(m, "%s\n", engine->name);
2266 for (i = 0; i < 4; i++) {
2267 u64 pdp = I915_READ(GEN8_RING_PDP_UDW(engine, i));
2268 pdp <<= 32;
2269 pdp |= I915_READ(GEN8_RING_PDP_LDW(engine, i));
2270 seq_printf(m, "\tPDP%d 0x%016llx\n", i, pdp);
2271 }
2272 }
2273 }
2274
2275 static void gen6_ppgtt_info(struct seq_file *m, struct drm_device *dev)
2276 {
2277 struct drm_i915_private *dev_priv = dev->dev_private;
2278 struct intel_engine_cs *engine;
2279
2280 if (INTEL_INFO(dev)->gen == 6)
2281 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
2282
2283 for_each_engine(engine, dev_priv) {
2284 seq_printf(m, "%s\n", engine->name);
2285 if (INTEL_INFO(dev)->gen == 7)
2286 seq_printf(m, "GFX_MODE: 0x%08x\n",
2287 I915_READ(RING_MODE_GEN7(engine)));
2288 seq_printf(m, "PP_DIR_BASE: 0x%08x\n",
2289 I915_READ(RING_PP_DIR_BASE(engine)));
2290 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n",
2291 I915_READ(RING_PP_DIR_BASE_READ(engine)));
2292 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n",
2293 I915_READ(RING_PP_DIR_DCLV(engine)));
2294 }
2295 if (dev_priv->mm.aliasing_ppgtt) {
2296 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
2297
2298 seq_puts(m, "aliasing PPGTT:\n");
2299 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd.base.ggtt_offset);
2300
2301 ppgtt->debug_dump(ppgtt, m);
2302 }
2303
2304 seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
2305 }
2306
2307 static int i915_ppgtt_info(struct seq_file *m, void *data)
2308 {
2309 struct drm_info_node *node = m->private;
2310 struct drm_device *dev = node->minor->dev;
2311 struct drm_i915_private *dev_priv = dev->dev_private;
2312 struct drm_file *file;
2313
2314 int ret = mutex_lock_interruptible(&dev->struct_mutex);
2315 if (ret)
2316 return ret;
2317 intel_runtime_pm_get(dev_priv);
2318
2319 if (INTEL_INFO(dev)->gen >= 8)
2320 gen8_ppgtt_info(m, dev);
2321 else if (INTEL_INFO(dev)->gen >= 6)
2322 gen6_ppgtt_info(m, dev);
2323
2324 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
2325 struct drm_i915_file_private *file_priv = file->driver_priv;
2326 struct task_struct *task;
2327
2328 task = get_pid_task(file->pid, PIDTYPE_PID);
2329 if (!task) {
2330 ret = -ESRCH;
2331 goto out_put;
2332 }
2333 seq_printf(m, "\nproc: %s\n", task->comm);
2334 put_task_struct(task);
2335 idr_for_each(&file_priv->context_idr, per_file_ctx,
2336 (void *)(unsigned long)m);
2337 }
2338
2339 out_put:
2340 intel_runtime_pm_put(dev_priv);
2341 mutex_unlock(&dev->struct_mutex);
2342
2343 return ret;
2344 }
2345
2346 static int count_irq_waiters(struct drm_i915_private *i915)
2347 {
2348 struct intel_engine_cs *engine;
2349 int count = 0;
2350
2351 for_each_engine(engine, i915)
2352 count += engine->irq_refcount;
2353
2354 return count;
2355 }
2356
2357 static int i915_rps_boost_info(struct seq_file *m, void *data)
2358 {
2359 struct drm_info_node *node = m->private;
2360 struct drm_device *dev = node->minor->dev;
2361 struct drm_i915_private *dev_priv = dev->dev_private;
2362 struct drm_file *file;
2363
2364 seq_printf(m, "RPS enabled? %d\n", dev_priv->rps.enabled);
2365 seq_printf(m, "GPU busy? %d\n", dev_priv->mm.busy);
2366 seq_printf(m, "CPU waiting? %d\n", count_irq_waiters(dev_priv));
2367 seq_printf(m, "Frequency requested %d; min hard:%d, soft:%d; max soft:%d, hard:%d\n",
2368 intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq),
2369 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq),
2370 intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit),
2371 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit),
2372 intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
2373 spin_lock(&dev_priv->rps.client_lock);
2374 list_for_each_entry_reverse(file, &dev->filelist, lhead) {
2375 struct drm_i915_file_private *file_priv = file->driver_priv;
2376 struct task_struct *task;
2377
2378 rcu_read_lock();
2379 task = pid_task(file->pid, PIDTYPE_PID);
2380 seq_printf(m, "%s [%d]: %d boosts%s\n",
2381 task ? task->comm : "<unknown>",
2382 task ? task->pid : -1,
2383 file_priv->rps.boosts,
2384 list_empty(&file_priv->rps.link) ? "" : ", active");
2385 rcu_read_unlock();
2386 }
2387 seq_printf(m, "Semaphore boosts: %d%s\n",
2388 dev_priv->rps.semaphores.boosts,
2389 list_empty(&dev_priv->rps.semaphores.link) ? "" : ", active");
2390 seq_printf(m, "MMIO flip boosts: %d%s\n",
2391 dev_priv->rps.mmioflips.boosts,
2392 list_empty(&dev_priv->rps.mmioflips.link) ? "" : ", active");
2393 seq_printf(m, "Kernel boosts: %d\n", dev_priv->rps.boosts);
2394 spin_unlock(&dev_priv->rps.client_lock);
2395
2396 return 0;
2397 }
2398
2399 static int i915_llc(struct seq_file *m, void *data)
2400 {
2401 struct drm_info_node *node = m->private;
2402 struct drm_device *dev = node->minor->dev;
2403 struct drm_i915_private *dev_priv = dev->dev_private;
2404
2405 /* Size calculation for LLC is a bit of a pain. Ignore for now. */
2406 seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(dev)));
2407 seq_printf(m, "eLLC: %zuMB\n", dev_priv->ellc_size);
2408
2409 return 0;
2410 }
2411
2412 static int i915_guc_load_status_info(struct seq_file *m, void *data)
2413 {
2414 struct drm_info_node *node = m->private;
2415 struct drm_i915_private *dev_priv = node->minor->dev->dev_private;
2416 struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw;
2417 u32 tmp, i;
2418
2419 if (!HAS_GUC_UCODE(dev_priv->dev))
2420 return 0;
2421
2422 seq_printf(m, "GuC firmware status:\n");
2423 seq_printf(m, "\tpath: %s\n",
2424 guc_fw->guc_fw_path);
2425 seq_printf(m, "\tfetch: %s\n",
2426 intel_guc_fw_status_repr(guc_fw->guc_fw_fetch_status));
2427 seq_printf(m, "\tload: %s\n",
2428 intel_guc_fw_status_repr(guc_fw->guc_fw_load_status));
2429 seq_printf(m, "\tversion wanted: %d.%d\n",
2430 guc_fw->guc_fw_major_wanted, guc_fw->guc_fw_minor_wanted);
2431 seq_printf(m, "\tversion found: %d.%d\n",
2432 guc_fw->guc_fw_major_found, guc_fw->guc_fw_minor_found);
2433 seq_printf(m, "\theader: offset is %d; size = %d\n",
2434 guc_fw->header_offset, guc_fw->header_size);
2435 seq_printf(m, "\tuCode: offset is %d; size = %d\n",
2436 guc_fw->ucode_offset, guc_fw->ucode_size);
2437 seq_printf(m, "\tRSA: offset is %d; size = %d\n",
2438 guc_fw->rsa_offset, guc_fw->rsa_size);
2439
2440 tmp = I915_READ(GUC_STATUS);
2441
2442 seq_printf(m, "\nGuC status 0x%08x:\n", tmp);
2443 seq_printf(m, "\tBootrom status = 0x%x\n",
2444 (tmp & GS_BOOTROM_MASK) >> GS_BOOTROM_SHIFT);
2445 seq_printf(m, "\tuKernel status = 0x%x\n",
2446 (tmp & GS_UKERNEL_MASK) >> GS_UKERNEL_SHIFT);
2447 seq_printf(m, "\tMIA Core status = 0x%x\n",
2448 (tmp & GS_MIA_MASK) >> GS_MIA_SHIFT);
2449 seq_puts(m, "\nScratch registers:\n");
2450 for (i = 0; i < 16; i++)
2451 seq_printf(m, "\t%2d: \t0x%x\n", i, I915_READ(SOFT_SCRATCH(i)));
2452
2453 return 0;
2454 }
2455
2456 static void i915_guc_client_info(struct seq_file *m,
2457 struct drm_i915_private *dev_priv,
2458 struct i915_guc_client *client)
2459 {
2460 struct intel_engine_cs *engine;
2461 uint64_t tot = 0;
2462
2463 seq_printf(m, "\tPriority %d, GuC ctx index: %u, PD offset 0x%x\n",
2464 client->priority, client->ctx_index, client->proc_desc_offset);
2465 seq_printf(m, "\tDoorbell id %d, offset: 0x%x, cookie 0x%x\n",
2466 client->doorbell_id, client->doorbell_offset, client->cookie);
2467 seq_printf(m, "\tWQ size %d, offset: 0x%x, tail %d\n",
2468 client->wq_size, client->wq_offset, client->wq_tail);
2469
2470 seq_printf(m, "\tFailed to queue: %u\n", client->q_fail);
2471 seq_printf(m, "\tFailed doorbell: %u\n", client->b_fail);
2472 seq_printf(m, "\tLast submission result: %d\n", client->retcode);
2473
2474 for_each_engine(engine, dev_priv) {
2475 seq_printf(m, "\tSubmissions: %llu %s\n",
2476 client->submissions[engine->guc_id],
2477 engine->name);
2478 tot += client->submissions[engine->guc_id];
2479 }
2480 seq_printf(m, "\tTotal: %llu\n", tot);
2481 }
2482
2483 static int i915_guc_info(struct seq_file *m, void *data)
2484 {
2485 struct drm_info_node *node = m->private;
2486 struct drm_device *dev = node->minor->dev;
2487 struct drm_i915_private *dev_priv = dev->dev_private;
2488 struct intel_guc guc;
2489 struct i915_guc_client client = {};
2490 struct intel_engine_cs *engine;
2491 u64 total = 0;
2492
2493 if (!HAS_GUC_SCHED(dev_priv->dev))
2494 return 0;
2495
2496 if (mutex_lock_interruptible(&dev->struct_mutex))
2497 return 0;
2498
2499 /* Take a local copy of the GuC data, so we can dump it at leisure */
2500 guc = dev_priv->guc;
2501 if (guc.execbuf_client)
2502 client = *guc.execbuf_client;
2503
2504 mutex_unlock(&dev->struct_mutex);
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(engine, dev_priv) {
2514 seq_printf(m, "\t%-24s: %10llu, last seqno 0x%08x\n",
2515 engine->name, guc.submissions[engine->guc_id],
2516 guc.last_seqno[engine->guc_id]);
2517 total += guc.submissions[engine->guc_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
2529 static int i915_guc_log_dump(struct seq_file *m, void *data)
2530 {
2531 struct drm_info_node *node = m->private;
2532 struct drm_device *dev = node->minor->dev;
2533 struct drm_i915_private *dev_priv = dev->dev_private;
2534 struct drm_i915_gem_object *log_obj = dev_priv->guc.log_obj;
2535 u32 *log;
2536 int i = 0, pg;
2537
2538 if (!log_obj)
2539 return 0;
2540
2541 for (pg = 0; pg < log_obj->base.size / PAGE_SIZE; pg++) {
2542 log = kmap_atomic(i915_gem_object_get_page(log_obj, pg));
2543
2544 for (i = 0; i < PAGE_SIZE / sizeof(u32); i += 4)
2545 seq_printf(m, "0x%08x 0x%08x 0x%08x 0x%08x\n",
2546 *(log + i), *(log + i + 1),
2547 *(log + i + 2), *(log + i + 3));
2548
2549 kunmap_atomic(log);
2550 }
2551
2552 seq_putc(m, '\n');
2553
2554 return 0;
2555 }
2556
2557 static int i915_edp_psr_status(struct seq_file *m, void *data)
2558 {
2559 struct drm_info_node *node = m->private;
2560 struct drm_device *dev = node->minor->dev;
2561 struct drm_i915_private *dev_priv = dev->dev_private;
2562 u32 psrperf = 0;
2563 u32 stat[3];
2564 enum pipe pipe;
2565 bool enabled = false;
2566
2567 if (!HAS_PSR(dev)) {
2568 seq_puts(m, "PSR not supported\n");
2569 return 0;
2570 }
2571
2572 intel_runtime_pm_get(dev_priv);
2573
2574 mutex_lock(&dev_priv->psr.lock);
2575 seq_printf(m, "Sink_Support: %s\n", yesno(dev_priv->psr.sink_support));
2576 seq_printf(m, "Source_OK: %s\n", yesno(dev_priv->psr.source_ok));
2577 seq_printf(m, "Enabled: %s\n", yesno((bool)dev_priv->psr.enabled));
2578 seq_printf(m, "Active: %s\n", yesno(dev_priv->psr.active));
2579 seq_printf(m, "Busy frontbuffer bits: 0x%03x\n",
2580 dev_priv->psr.busy_frontbuffer_bits);
2581 seq_printf(m, "Re-enable work scheduled: %s\n",
2582 yesno(work_busy(&dev_priv->psr.work.work)));
2583
2584 if (HAS_DDI(dev))
2585 enabled = I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE;
2586 else {
2587 for_each_pipe(dev_priv, pipe) {
2588 stat[pipe] = I915_READ(VLV_PSRSTAT(pipe)) &
2589 VLV_EDP_PSR_CURR_STATE_MASK;
2590 if ((stat[pipe] == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
2591 (stat[pipe] == VLV_EDP_PSR_ACTIVE_SF_UPDATE))
2592 enabled = true;
2593 }
2594 }
2595
2596 seq_printf(m, "Main link in standby mode: %s\n",
2597 yesno(dev_priv->psr.link_standby));
2598
2599 seq_printf(m, "HW Enabled & Active bit: %s", yesno(enabled));
2600
2601 if (!HAS_DDI(dev))
2602 for_each_pipe(dev_priv, pipe) {
2603 if ((stat[pipe] == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
2604 (stat[pipe] == VLV_EDP_PSR_ACTIVE_SF_UPDATE))
2605 seq_printf(m, " pipe %c", pipe_name(pipe));
2606 }
2607 seq_puts(m, "\n");
2608
2609 /*
2610 * VLV/CHV PSR has no kind of performance counter
2611 * SKL+ Perf counter is reset to 0 everytime DC state is entered
2612 */
2613 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
2614 psrperf = I915_READ(EDP_PSR_PERF_CNT) &
2615 EDP_PSR_PERF_CNT_MASK;
2616
2617 seq_printf(m, "Performance_Counter: %u\n", psrperf);
2618 }
2619 mutex_unlock(&dev_priv->psr.lock);
2620
2621 intel_runtime_pm_put(dev_priv);
2622 return 0;
2623 }
2624
2625 static int i915_sink_crc(struct seq_file *m, void *data)
2626 {
2627 struct drm_info_node *node = m->private;
2628 struct drm_device *dev = node->minor->dev;
2629 struct intel_encoder *encoder;
2630 struct intel_connector *connector;
2631 struct intel_dp *intel_dp = NULL;
2632 int ret;
2633 u8 crc[6];
2634
2635 drm_modeset_lock_all(dev);
2636 for_each_intel_connector(dev, connector) {
2637
2638 if (connector->base.dpms != DRM_MODE_DPMS_ON)
2639 continue;
2640
2641 if (!connector->base.encoder)
2642 continue;
2643
2644 encoder = to_intel_encoder(connector->base.encoder);
2645 if (encoder->type != INTEL_OUTPUT_EDP)
2646 continue;
2647
2648 intel_dp = enc_to_intel_dp(&encoder->base);
2649
2650 ret = intel_dp_sink_crc(intel_dp, crc);
2651 if (ret)
2652 goto out;
2653
2654 seq_printf(m, "%02x%02x%02x%02x%02x%02x\n",
2655 crc[0], crc[1], crc[2],
2656 crc[3], crc[4], crc[5]);
2657 goto out;
2658 }
2659 ret = -ENODEV;
2660 out:
2661 drm_modeset_unlock_all(dev);
2662 return ret;
2663 }
2664
2665 static int i915_energy_uJ(struct seq_file *m, void *data)
2666 {
2667 struct drm_info_node *node = m->private;
2668 struct drm_device *dev = node->minor->dev;
2669 struct drm_i915_private *dev_priv = dev->dev_private;
2670 u64 power;
2671 u32 units;
2672
2673 if (INTEL_INFO(dev)->gen < 6)
2674 return -ENODEV;
2675
2676 intel_runtime_pm_get(dev_priv);
2677
2678 rdmsrl(MSR_RAPL_POWER_UNIT, power);
2679 power = (power & 0x1f00) >> 8;
2680 units = 1000000 / (1 << power); /* convert to uJ */
2681 power = I915_READ(MCH_SECP_NRG_STTS);
2682 power *= units;
2683
2684 intel_runtime_pm_put(dev_priv);
2685
2686 seq_printf(m, "%llu", (long long unsigned)power);
2687
2688 return 0;
2689 }
2690
2691 static int i915_runtime_pm_status(struct seq_file *m, void *unused)
2692 {
2693 struct drm_info_node *node = m->private;
2694 struct drm_device *dev = node->minor->dev;
2695 struct drm_i915_private *dev_priv = dev->dev_private;
2696
2697 if (!HAS_RUNTIME_PM(dev)) {
2698 seq_puts(m, "not supported\n");
2699 return 0;
2700 }
2701
2702 seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->mm.busy));
2703 seq_printf(m, "IRQs disabled: %s\n",
2704 yesno(!intel_irqs_enabled(dev_priv)));
2705 #ifdef CONFIG_PM
2706 seq_printf(m, "Usage count: %d\n",
2707 atomic_read(&dev->dev->power.usage_count));
2708 #else
2709 seq_printf(m, "Device Power Management (CONFIG_PM) disabled\n");
2710 #endif
2711
2712 return 0;
2713 }
2714
2715 static int i915_power_domain_info(struct seq_file *m, void *unused)
2716 {
2717 struct drm_info_node *node = m->private;
2718 struct drm_device *dev = node->minor->dev;
2719 struct drm_i915_private *dev_priv = dev->dev_private;
2720 struct i915_power_domains *power_domains = &dev_priv->power_domains;
2721 int i;
2722
2723 mutex_lock(&power_domains->lock);
2724
2725 seq_printf(m, "%-25s %s\n", "Power well/domain", "Use count");
2726 for (i = 0; i < power_domains->power_well_count; i++) {
2727 struct i915_power_well *power_well;
2728 enum intel_display_power_domain power_domain;
2729
2730 power_well = &power_domains->power_wells[i];
2731 seq_printf(m, "%-25s %d\n", power_well->name,
2732 power_well->count);
2733
2734 for (power_domain = 0; power_domain < POWER_DOMAIN_NUM;
2735 power_domain++) {
2736 if (!(BIT(power_domain) & power_well->domains))
2737 continue;
2738
2739 seq_printf(m, " %-23s %d\n",
2740 intel_display_power_domain_str(power_domain),
2741 power_domains->domain_use_count[power_domain]);
2742 }
2743 }
2744
2745 mutex_unlock(&power_domains->lock);
2746
2747 return 0;
2748 }
2749
2750 static int i915_dmc_info(struct seq_file *m, void *unused)
2751 {
2752 struct drm_info_node *node = m->private;
2753 struct drm_device *dev = node->minor->dev;
2754 struct drm_i915_private *dev_priv = dev->dev_private;
2755 struct intel_csr *csr;
2756
2757 if (!HAS_CSR(dev)) {
2758 seq_puts(m, "not supported\n");
2759 return 0;
2760 }
2761
2762 csr = &dev_priv->csr;
2763
2764 intel_runtime_pm_get(dev_priv);
2765
2766 seq_printf(m, "fw loaded: %s\n", yesno(csr->dmc_payload != NULL));
2767 seq_printf(m, "path: %s\n", csr->fw_path);
2768
2769 if (!csr->dmc_payload)
2770 goto out;
2771
2772 seq_printf(m, "version: %d.%d\n", CSR_VERSION_MAJOR(csr->version),
2773 CSR_VERSION_MINOR(csr->version));
2774
2775 if (IS_SKYLAKE(dev) && csr->version >= CSR_VERSION(1, 6)) {
2776 seq_printf(m, "DC3 -> DC5 count: %d\n",
2777 I915_READ(SKL_CSR_DC3_DC5_COUNT));
2778 seq_printf(m, "DC5 -> DC6 count: %d\n",
2779 I915_READ(SKL_CSR_DC5_DC6_COUNT));
2780 } else if (IS_BROXTON(dev) && csr->version >= CSR_VERSION(1, 4)) {
2781 seq_printf(m, "DC3 -> DC5 count: %d\n",
2782 I915_READ(BXT_CSR_DC3_DC5_COUNT));
2783 }
2784
2785 out:
2786 seq_printf(m, "program base: 0x%08x\n", I915_READ(CSR_PROGRAM(0)));
2787 seq_printf(m, "ssp base: 0x%08x\n", I915_READ(CSR_SSP_BASE));
2788 seq_printf(m, "htp: 0x%08x\n", I915_READ(CSR_HTP_SKL));
2789
2790 intel_runtime_pm_put(dev_priv);
2791
2792 return 0;
2793 }
2794
2795 static void intel_seq_print_mode(struct seq_file *m, int tabs,
2796 struct drm_display_mode *mode)
2797 {
2798 int i;
2799
2800 for (i = 0; i < tabs; i++)
2801 seq_putc(m, '\t');
2802
2803 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",
2804 mode->base.id, mode->name,
2805 mode->vrefresh, mode->clock,
2806 mode->hdisplay, mode->hsync_start,
2807 mode->hsync_end, mode->htotal,
2808 mode->vdisplay, mode->vsync_start,
2809 mode->vsync_end, mode->vtotal,
2810 mode->type, mode->flags);
2811 }
2812
2813 static void intel_encoder_info(struct seq_file *m,
2814 struct intel_crtc *intel_crtc,
2815 struct intel_encoder *intel_encoder)
2816 {
2817 struct drm_info_node *node = m->private;
2818 struct drm_device *dev = node->minor->dev;
2819 struct drm_crtc *crtc = &intel_crtc->base;
2820 struct intel_connector *intel_connector;
2821 struct drm_encoder *encoder;
2822
2823 encoder = &intel_encoder->base;
2824 seq_printf(m, "\tencoder %d: type: %s, connectors:\n",
2825 encoder->base.id, encoder->name);
2826 for_each_connector_on_encoder(dev, encoder, intel_connector) {
2827 struct drm_connector *connector = &intel_connector->base;
2828 seq_printf(m, "\t\tconnector %d: type: %s, status: %s",
2829 connector->base.id,
2830 connector->name,
2831 drm_get_connector_status_name(connector->status));
2832 if (connector->status == connector_status_connected) {
2833 struct drm_display_mode *mode = &crtc->mode;
2834 seq_printf(m, ", mode:\n");
2835 intel_seq_print_mode(m, 2, mode);
2836 } else {
2837 seq_putc(m, '\n');
2838 }
2839 }
2840 }
2841
2842 static void intel_crtc_info(struct seq_file *m, struct intel_crtc *intel_crtc)
2843 {
2844 struct drm_info_node *node = m->private;
2845 struct drm_device *dev = node->minor->dev;
2846 struct drm_crtc *crtc = &intel_crtc->base;
2847 struct intel_encoder *intel_encoder;
2848 struct drm_plane_state *plane_state = crtc->primary->state;
2849 struct drm_framebuffer *fb = plane_state->fb;
2850
2851 if (fb)
2852 seq_printf(m, "\tfb: %d, pos: %dx%d, size: %dx%d\n",
2853 fb->base.id, plane_state->src_x >> 16,
2854 plane_state->src_y >> 16, fb->width, fb->height);
2855 else
2856 seq_puts(m, "\tprimary plane disabled\n");
2857 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
2858 intel_encoder_info(m, intel_crtc, intel_encoder);
2859 }
2860
2861 static void intel_panel_info(struct seq_file *m, struct intel_panel *panel)
2862 {
2863 struct drm_display_mode *mode = panel->fixed_mode;
2864
2865 seq_printf(m, "\tfixed mode:\n");
2866 intel_seq_print_mode(m, 2, mode);
2867 }
2868
2869 static void intel_dp_info(struct seq_file *m,
2870 struct intel_connector *intel_connector)
2871 {
2872 struct intel_encoder *intel_encoder = intel_connector->encoder;
2873 struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
2874
2875 seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]);
2876 seq_printf(m, "\taudio support: %s\n", yesno(intel_dp->has_audio));
2877 if (intel_encoder->type == INTEL_OUTPUT_EDP)
2878 intel_panel_info(m, &intel_connector->panel);
2879 }
2880
2881 static void intel_dp_mst_info(struct seq_file *m,
2882 struct intel_connector *intel_connector)
2883 {
2884 struct intel_encoder *intel_encoder = intel_connector->encoder;
2885 struct intel_dp_mst_encoder *intel_mst =
2886 enc_to_mst(&intel_encoder->base);
2887 struct intel_digital_port *intel_dig_port = intel_mst->primary;
2888 struct intel_dp *intel_dp = &intel_dig_port->dp;
2889 bool has_audio = drm_dp_mst_port_has_audio(&intel_dp->mst_mgr,
2890 intel_connector->port);
2891
2892 seq_printf(m, "\taudio support: %s\n", yesno(has_audio));
2893 }
2894
2895 static void intel_hdmi_info(struct seq_file *m,
2896 struct intel_connector *intel_connector)
2897 {
2898 struct intel_encoder *intel_encoder = intel_connector->encoder;
2899 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&intel_encoder->base);
2900
2901 seq_printf(m, "\taudio support: %s\n", yesno(intel_hdmi->has_audio));
2902 }
2903
2904 static void intel_lvds_info(struct seq_file *m,
2905 struct intel_connector *intel_connector)
2906 {
2907 intel_panel_info(m, &intel_connector->panel);
2908 }
2909
2910 static void intel_connector_info(struct seq_file *m,
2911 struct drm_connector *connector)
2912 {
2913 struct intel_connector *intel_connector = to_intel_connector(connector);
2914 struct intel_encoder *intel_encoder = intel_connector->encoder;
2915 struct drm_display_mode *mode;
2916
2917 seq_printf(m, "connector %d: type %s, status: %s\n",
2918 connector->base.id, connector->name,
2919 drm_get_connector_status_name(connector->status));
2920 if (connector->status == connector_status_connected) {
2921 seq_printf(m, "\tname: %s\n", connector->display_info.name);
2922 seq_printf(m, "\tphysical dimensions: %dx%dmm\n",
2923 connector->display_info.width_mm,
2924 connector->display_info.height_mm);
2925 seq_printf(m, "\tsubpixel order: %s\n",
2926 drm_get_subpixel_order_name(connector->display_info.subpixel_order));
2927 seq_printf(m, "\tCEA rev: %d\n",
2928 connector->display_info.cea_rev);
2929 }
2930 if (intel_encoder) {
2931 if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
2932 intel_encoder->type == INTEL_OUTPUT_EDP)
2933 intel_dp_info(m, intel_connector);
2934 else if (intel_encoder->type == INTEL_OUTPUT_HDMI)
2935 intel_hdmi_info(m, intel_connector);
2936 else if (intel_encoder->type == INTEL_OUTPUT_LVDS)
2937 intel_lvds_info(m, intel_connector);
2938 else if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
2939 intel_dp_mst_info(m, intel_connector);
2940 }
2941
2942 seq_printf(m, "\tmodes:\n");
2943 list_for_each_entry(mode, &connector->modes, head)
2944 intel_seq_print_mode(m, 2, mode);
2945 }
2946
2947 static bool cursor_active(struct drm_device *dev, int pipe)
2948 {
2949 struct drm_i915_private *dev_priv = dev->dev_private;
2950 u32 state;
2951
2952 if (IS_845G(dev) || IS_I865G(dev))
2953 state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
2954 else
2955 state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
2956
2957 return state;
2958 }
2959
2960 static bool cursor_position(struct drm_device *dev, int pipe, int *x, int *y)
2961 {
2962 struct drm_i915_private *dev_priv = dev->dev_private;
2963 u32 pos;
2964
2965 pos = I915_READ(CURPOS(pipe));
2966
2967 *x = (pos >> CURSOR_X_SHIFT) & CURSOR_POS_MASK;
2968 if (pos & (CURSOR_POS_SIGN << CURSOR_X_SHIFT))
2969 *x = -*x;
2970
2971 *y = (pos >> CURSOR_Y_SHIFT) & CURSOR_POS_MASK;
2972 if (pos & (CURSOR_POS_SIGN << CURSOR_Y_SHIFT))
2973 *y = -*y;
2974
2975 return cursor_active(dev, pipe);
2976 }
2977
2978 static const char *plane_type(enum drm_plane_type type)
2979 {
2980 switch (type) {
2981 case DRM_PLANE_TYPE_OVERLAY:
2982 return "OVL";
2983 case DRM_PLANE_TYPE_PRIMARY:
2984 return "PRI";
2985 case DRM_PLANE_TYPE_CURSOR:
2986 return "CUR";
2987 /*
2988 * Deliberately omitting default: to generate compiler warnings
2989 * when a new drm_plane_type gets added.
2990 */
2991 }
2992
2993 return "unknown";
2994 }
2995
2996 static const char *plane_rotation(unsigned int rotation)
2997 {
2998 static char buf[48];
2999 /*
3000 * According to doc only one DRM_ROTATE_ is allowed but this
3001 * will print them all to visualize if the values are misused
3002 */
3003 snprintf(buf, sizeof(buf),
3004 "%s%s%s%s%s%s(0x%08x)",
3005 (rotation & BIT(DRM_ROTATE_0)) ? "0 " : "",
3006 (rotation & BIT(DRM_ROTATE_90)) ? "90 " : "",
3007 (rotation & BIT(DRM_ROTATE_180)) ? "180 " : "",
3008 (rotation & BIT(DRM_ROTATE_270)) ? "270 " : "",
3009 (rotation & BIT(DRM_REFLECT_X)) ? "FLIPX " : "",
3010 (rotation & BIT(DRM_REFLECT_Y)) ? "FLIPY " : "",
3011 rotation);
3012
3013 return buf;
3014 }
3015
3016 static void intel_plane_info(struct seq_file *m, struct intel_crtc *intel_crtc)
3017 {
3018 struct drm_info_node *node = m->private;
3019 struct drm_device *dev = node->minor->dev;
3020 struct intel_plane *intel_plane;
3021
3022 for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
3023 struct drm_plane_state *state;
3024 struct drm_plane *plane = &intel_plane->base;
3025
3026 if (!plane->state) {
3027 seq_puts(m, "plane->state is NULL!\n");
3028 continue;
3029 }
3030
3031 state = plane->state;
3032
3033 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",
3034 plane->base.id,
3035 plane_type(intel_plane->base.type),
3036 state->crtc_x, state->crtc_y,
3037 state->crtc_w, state->crtc_h,
3038 (state->src_x >> 16),
3039 ((state->src_x & 0xffff) * 15625) >> 10,
3040 (state->src_y >> 16),
3041 ((state->src_y & 0xffff) * 15625) >> 10,
3042 (state->src_w >> 16),
3043 ((state->src_w & 0xffff) * 15625) >> 10,
3044 (state->src_h >> 16),
3045 ((state->src_h & 0xffff) * 15625) >> 10,
3046 state->fb ? drm_get_format_name(state->fb->pixel_format) : "N/A",
3047 plane_rotation(state->rotation));
3048 }
3049 }
3050
3051 static void intel_scaler_info(struct seq_file *m, struct intel_crtc *intel_crtc)
3052 {
3053 struct intel_crtc_state *pipe_config;
3054 int num_scalers = intel_crtc->num_scalers;
3055 int i;
3056
3057 pipe_config = to_intel_crtc_state(intel_crtc->base.state);
3058
3059 /* Not all platformas have a scaler */
3060 if (num_scalers) {
3061 seq_printf(m, "\tnum_scalers=%d, scaler_users=%x scaler_id=%d",
3062 num_scalers,
3063 pipe_config->scaler_state.scaler_users,
3064 pipe_config->scaler_state.scaler_id);
3065
3066 for (i = 0; i < SKL_NUM_SCALERS; i++) {
3067 struct intel_scaler *sc =
3068 &pipe_config->scaler_state.scalers[i];
3069
3070 seq_printf(m, ", scalers[%d]: use=%s, mode=%x",
3071 i, yesno(sc->in_use), sc->mode);
3072 }
3073 seq_puts(m, "\n");
3074 } else {
3075 seq_puts(m, "\tNo scalers available on this platform\n");
3076 }
3077 }
3078
3079 static int i915_display_info(struct seq_file *m, void *unused)
3080 {
3081 struct drm_info_node *node = m->private;
3082 struct drm_device *dev = node->minor->dev;
3083 struct drm_i915_private *dev_priv = dev->dev_private;
3084 struct intel_crtc *crtc;
3085 struct drm_connector *connector;
3086
3087 intel_runtime_pm_get(dev_priv);
3088 drm_modeset_lock_all(dev);
3089 seq_printf(m, "CRTC info\n");
3090 seq_printf(m, "---------\n");
3091 for_each_intel_crtc(dev, crtc) {
3092 bool active;
3093 struct intel_crtc_state *pipe_config;
3094 int x, y;
3095
3096 pipe_config = to_intel_crtc_state(crtc->base.state);
3097
3098 seq_printf(m, "CRTC %d: pipe: %c, active=%s, (size=%dx%d), dither=%s, bpp=%d\n",
3099 crtc->base.base.id, pipe_name(crtc->pipe),
3100 yesno(pipe_config->base.active),
3101 pipe_config->pipe_src_w, pipe_config->pipe_src_h,
3102 yesno(pipe_config->dither), pipe_config->pipe_bpp);
3103
3104 if (pipe_config->base.active) {
3105 intel_crtc_info(m, crtc);
3106
3107 active = cursor_position(dev, crtc->pipe, &x, &y);
3108 seq_printf(m, "\tcursor visible? %s, position (%d, %d), size %dx%d, addr 0x%08x, active? %s\n",
3109 yesno(crtc->cursor_base),
3110 x, y, crtc->base.cursor->state->crtc_w,
3111 crtc->base.cursor->state->crtc_h,
3112 crtc->cursor_addr, yesno(active));
3113 intel_scaler_info(m, crtc);
3114 intel_plane_info(m, crtc);
3115 }
3116
3117 seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s \n",
3118 yesno(!crtc->cpu_fifo_underrun_disabled),
3119 yesno(!crtc->pch_fifo_underrun_disabled));
3120 }
3121
3122 seq_printf(m, "\n");
3123 seq_printf(m, "Connector info\n");
3124 seq_printf(m, "--------------\n");
3125 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
3126 intel_connector_info(m, connector);
3127 }
3128 drm_modeset_unlock_all(dev);
3129 intel_runtime_pm_put(dev_priv);
3130
3131 return 0;
3132 }
3133
3134 static int i915_semaphore_status(struct seq_file *m, void *unused)
3135 {
3136 struct drm_info_node *node = (struct drm_info_node *) m->private;
3137 struct drm_device *dev = node->minor->dev;
3138 struct drm_i915_private *dev_priv = dev->dev_private;
3139 struct intel_engine_cs *engine;
3140 int num_rings = hweight32(INTEL_INFO(dev)->ring_mask);
3141 enum intel_engine_id id;
3142 int j, ret;
3143
3144 if (!i915_semaphore_is_enabled(dev)) {
3145 seq_puts(m, "Semaphores are disabled\n");
3146 return 0;
3147 }
3148
3149 ret = mutex_lock_interruptible(&dev->struct_mutex);
3150 if (ret)
3151 return ret;
3152 intel_runtime_pm_get(dev_priv);
3153
3154 if (IS_BROADWELL(dev)) {
3155 struct page *page;
3156 uint64_t *seqno;
3157
3158 page = i915_gem_object_get_page(dev_priv->semaphore_obj, 0);
3159
3160 seqno = (uint64_t *)kmap_atomic(page);
3161 for_each_engine_id(engine, dev_priv, id) {
3162 uint64_t offset;
3163
3164 seq_printf(m, "%s\n", engine->name);
3165
3166 seq_puts(m, " Last signal:");
3167 for (j = 0; j < num_rings; j++) {
3168 offset = id * I915_NUM_ENGINES + j;
3169 seq_printf(m, "0x%08llx (0x%02llx) ",
3170 seqno[offset], offset * 8);
3171 }
3172 seq_putc(m, '\n');
3173
3174 seq_puts(m, " Last wait: ");
3175 for (j = 0; j < num_rings; j++) {
3176 offset = id + (j * I915_NUM_ENGINES);
3177 seq_printf(m, "0x%08llx (0x%02llx) ",
3178 seqno[offset], offset * 8);
3179 }
3180 seq_putc(m, '\n');
3181
3182 }
3183 kunmap_atomic(seqno);
3184 } else {
3185 seq_puts(m, " Last signal:");
3186 for_each_engine(engine, dev_priv)
3187 for (j = 0; j < num_rings; j++)
3188 seq_printf(m, "0x%08x\n",
3189 I915_READ(engine->semaphore.mbox.signal[j]));
3190 seq_putc(m, '\n');
3191 }
3192
3193 seq_puts(m, "\nSync seqno:\n");
3194 for_each_engine(engine, dev_priv) {
3195 for (j = 0; j < num_rings; j++)
3196 seq_printf(m, " 0x%08x ",
3197 engine->semaphore.sync_seqno[j]);
3198 seq_putc(m, '\n');
3199 }
3200 seq_putc(m, '\n');
3201
3202 intel_runtime_pm_put(dev_priv);
3203 mutex_unlock(&dev->struct_mutex);
3204 return 0;
3205 }
3206
3207 static int i915_shared_dplls_info(struct seq_file *m, void *unused)
3208 {
3209 struct drm_info_node *node = (struct drm_info_node *) m->private;
3210 struct drm_device *dev = node->minor->dev;
3211 struct drm_i915_private *dev_priv = dev->dev_private;
3212 int i;
3213
3214 drm_modeset_lock_all(dev);
3215 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
3216 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
3217
3218 seq_printf(m, "DPLL%i: %s, id: %i\n", i, pll->name, pll->id);
3219 seq_printf(m, " crtc_mask: 0x%08x, active: 0x%x, on: %s\n",
3220 pll->config.crtc_mask, pll->active_mask, yesno(pll->on));
3221 seq_printf(m, " tracked hardware state:\n");
3222 seq_printf(m, " dpll: 0x%08x\n", pll->config.hw_state.dpll);
3223 seq_printf(m, " dpll_md: 0x%08x\n",
3224 pll->config.hw_state.dpll_md);
3225 seq_printf(m, " fp0: 0x%08x\n", pll->config.hw_state.fp0);
3226 seq_printf(m, " fp1: 0x%08x\n", pll->config.hw_state.fp1);
3227 seq_printf(m, " wrpll: 0x%08x\n", pll->config.hw_state.wrpll);
3228 }
3229 drm_modeset_unlock_all(dev);
3230
3231 return 0;
3232 }
3233
3234 static int i915_wa_registers(struct seq_file *m, void *unused)
3235 {
3236 int i;
3237 int ret;
3238 struct intel_engine_cs *engine;
3239 struct drm_info_node *node = (struct drm_info_node *) m->private;
3240 struct drm_device *dev = node->minor->dev;
3241 struct drm_i915_private *dev_priv = dev->dev_private;
3242 struct i915_workarounds *workarounds = &dev_priv->workarounds;
3243 enum intel_engine_id id;
3244
3245 ret = mutex_lock_interruptible(&dev->struct_mutex);
3246 if (ret)
3247 return ret;
3248
3249 intel_runtime_pm_get(dev_priv);
3250
3251 seq_printf(m, "Workarounds applied: %d\n", workarounds->count);
3252 for_each_engine_id(engine, dev_priv, id)
3253 seq_printf(m, "HW whitelist count for %s: %d\n",
3254 engine->name, workarounds->hw_whitelist_count[id]);
3255 for (i = 0; i < workarounds->count; ++i) {
3256 i915_reg_t addr;
3257 u32 mask, value, read;
3258 bool ok;
3259
3260 addr = workarounds->reg[i].addr;
3261 mask = workarounds->reg[i].mask;
3262 value = workarounds->reg[i].value;
3263 read = I915_READ(addr);
3264 ok = (value & mask) == (read & mask);
3265 seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X, read: 0x%08x, status: %s\n",
3266 i915_mmio_reg_offset(addr), value, mask, read, ok ? "OK" : "FAIL");
3267 }
3268
3269 intel_runtime_pm_put(dev_priv);
3270 mutex_unlock(&dev->struct_mutex);
3271
3272 return 0;
3273 }
3274
3275 static int i915_ddb_info(struct seq_file *m, void *unused)
3276 {
3277 struct drm_info_node *node = m->private;
3278 struct drm_device *dev = node->minor->dev;
3279 struct drm_i915_private *dev_priv = dev->dev_private;
3280 struct skl_ddb_allocation *ddb;
3281 struct skl_ddb_entry *entry;
3282 enum pipe pipe;
3283 int plane;
3284
3285 if (INTEL_INFO(dev)->gen < 9)
3286 return 0;
3287
3288 drm_modeset_lock_all(dev);
3289
3290 ddb = &dev_priv->wm.skl_hw.ddb;
3291
3292 seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");
3293
3294 for_each_pipe(dev_priv, pipe) {
3295 seq_printf(m, "Pipe %c\n", pipe_name(pipe));
3296
3297 for_each_plane(dev_priv, pipe, plane) {
3298 entry = &ddb->plane[pipe][plane];
3299 seq_printf(m, " Plane%-8d%8u%8u%8u\n", plane + 1,
3300 entry->start, entry->end,
3301 skl_ddb_entry_size(entry));
3302 }
3303
3304 entry = &ddb->plane[pipe][PLANE_CURSOR];
3305 seq_printf(m, " %-13s%8u%8u%8u\n", "Cursor", entry->start,
3306 entry->end, skl_ddb_entry_size(entry));
3307 }
3308
3309 drm_modeset_unlock_all(dev);
3310
3311 return 0;
3312 }
3313
3314 static void drrs_status_per_crtc(struct seq_file *m,
3315 struct drm_device *dev, struct intel_crtc *intel_crtc)
3316 {
3317 struct intel_encoder *intel_encoder;
3318 struct drm_i915_private *dev_priv = dev->dev_private;
3319 struct i915_drrs *drrs = &dev_priv->drrs;
3320 int vrefresh = 0;
3321
3322 for_each_encoder_on_crtc(dev, &intel_crtc->base, intel_encoder) {
3323 /* Encoder connected on this CRTC */
3324 switch (intel_encoder->type) {
3325 case INTEL_OUTPUT_EDP:
3326 seq_puts(m, "eDP:\n");
3327 break;
3328 case INTEL_OUTPUT_DSI:
3329 seq_puts(m, "DSI:\n");
3330 break;
3331 case INTEL_OUTPUT_HDMI:
3332 seq_puts(m, "HDMI:\n");
3333 break;
3334 case INTEL_OUTPUT_DISPLAYPORT:
3335 seq_puts(m, "DP:\n");
3336 break;
3337 default:
3338 seq_printf(m, "Other encoder (id=%d).\n",
3339 intel_encoder->type);
3340 return;
3341 }
3342 }
3343
3344 if (dev_priv->vbt.drrs_type == STATIC_DRRS_SUPPORT)
3345 seq_puts(m, "\tVBT: DRRS_type: Static");
3346 else if (dev_priv->vbt.drrs_type == SEAMLESS_DRRS_SUPPORT)
3347 seq_puts(m, "\tVBT: DRRS_type: Seamless");
3348 else if (dev_priv->vbt.drrs_type == DRRS_NOT_SUPPORTED)
3349 seq_puts(m, "\tVBT: DRRS_type: None");
3350 else
3351 seq_puts(m, "\tVBT: DRRS_type: FIXME: Unrecognized Value");
3352
3353 seq_puts(m, "\n\n");
3354
3355 if (to_intel_crtc_state(intel_crtc->base.state)->has_drrs) {
3356 struct intel_panel *panel;
3357
3358 mutex_lock(&drrs->mutex);
3359 /* DRRS Supported */
3360 seq_puts(m, "\tDRRS Supported: Yes\n");
3361
3362 /* disable_drrs() will make drrs->dp NULL */
3363 if (!drrs->dp) {
3364 seq_puts(m, "Idleness DRRS: Disabled");
3365 mutex_unlock(&drrs->mutex);
3366 return;
3367 }
3368
3369 panel = &drrs->dp->attached_connector->panel;
3370 seq_printf(m, "\t\tBusy_frontbuffer_bits: 0x%X",
3371 drrs->busy_frontbuffer_bits);
3372
3373 seq_puts(m, "\n\t\t");
3374 if (drrs->refresh_rate_type == DRRS_HIGH_RR) {
3375 seq_puts(m, "DRRS_State: DRRS_HIGH_RR\n");
3376 vrefresh = panel->fixed_mode->vrefresh;
3377 } else if (drrs->refresh_rate_type == DRRS_LOW_RR) {
3378 seq_puts(m, "DRRS_State: DRRS_LOW_RR\n");
3379 vrefresh = panel->downclock_mode->vrefresh;
3380 } else {
3381 seq_printf(m, "DRRS_State: Unknown(%d)\n",
3382 drrs->refresh_rate_type);
3383 mutex_unlock(&drrs->mutex);
3384 return;
3385 }
3386 seq_printf(m, "\t\tVrefresh: %d", vrefresh);
3387
3388 seq_puts(m, "\n\t\t");
3389 mutex_unlock(&drrs->mutex);
3390 } else {
3391 /* DRRS not supported. Print the VBT parameter*/
3392 seq_puts(m, "\tDRRS Supported : No");
3393 }
3394 seq_puts(m, "\n");
3395 }
3396
3397 static int i915_drrs_status(struct seq_file *m, void *unused)
3398 {
3399 struct drm_info_node *node = m->private;
3400 struct drm_device *dev = node->minor->dev;
3401 struct intel_crtc *intel_crtc;
3402 int active_crtc_cnt = 0;
3403
3404 for_each_intel_crtc(dev, intel_crtc) {
3405 drm_modeset_lock(&intel_crtc->base.mutex, NULL);
3406
3407 if (intel_crtc->base.state->active) {
3408 active_crtc_cnt++;
3409 seq_printf(m, "\nCRTC %d: ", active_crtc_cnt);
3410
3411 drrs_status_per_crtc(m, dev, intel_crtc);
3412 }
3413
3414 drm_modeset_unlock(&intel_crtc->base.mutex);
3415 }
3416
3417 if (!active_crtc_cnt)
3418 seq_puts(m, "No active crtc found\n");
3419
3420 return 0;
3421 }
3422
3423 struct pipe_crc_info {
3424 const char *name;
3425 struct drm_device *dev;
3426 enum pipe pipe;
3427 };
3428
3429 static int i915_dp_mst_info(struct seq_file *m, void *unused)
3430 {
3431 struct drm_info_node *node = (struct drm_info_node *) m->private;
3432 struct drm_device *dev = node->minor->dev;
3433 struct drm_encoder *encoder;
3434 struct intel_encoder *intel_encoder;
3435 struct intel_digital_port *intel_dig_port;
3436 drm_modeset_lock_all(dev);
3437 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
3438 intel_encoder = to_intel_encoder(encoder);
3439 if (intel_encoder->type != INTEL_OUTPUT_DISPLAYPORT)
3440 continue;
3441 intel_dig_port = enc_to_dig_port(encoder);
3442 if (!intel_dig_port->dp.can_mst)
3443 continue;
3444
3445 drm_dp_mst_dump_topology(m, &intel_dig_port->dp.mst_mgr);
3446 }
3447 drm_modeset_unlock_all(dev);
3448 return 0;
3449 }
3450
3451 static int i915_pipe_crc_open(struct inode *inode, struct file *filep)
3452 {
3453 struct pipe_crc_info *info = inode->i_private;
3454 struct drm_i915_private *dev_priv = info->dev->dev_private;
3455 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
3456
3457 if (info->pipe >= INTEL_INFO(info->dev)->num_pipes)
3458 return -ENODEV;
3459
3460 spin_lock_irq(&pipe_crc->lock);
3461
3462 if (pipe_crc->opened) {
3463 spin_unlock_irq(&pipe_crc->lock);
3464 return -EBUSY; /* already open */
3465 }
3466
3467 pipe_crc->opened = true;
3468 filep->private_data = inode->i_private;
3469
3470 spin_unlock_irq(&pipe_crc->lock);
3471
3472 return 0;
3473 }
3474
3475 static int i915_pipe_crc_release(struct inode *inode, struct file *filep)
3476 {
3477 struct pipe_crc_info *info = inode->i_private;
3478 struct drm_i915_private *dev_priv = info->dev->dev_private;
3479 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
3480
3481 spin_lock_irq(&pipe_crc->lock);
3482 pipe_crc->opened = false;
3483 spin_unlock_irq(&pipe_crc->lock);
3484
3485 return 0;
3486 }
3487
3488 /* (6 fields, 8 chars each, space separated (5) + '\n') */
3489 #define PIPE_CRC_LINE_LEN (6 * 8 + 5 + 1)
3490 /* account for \'0' */
3491 #define PIPE_CRC_BUFFER_LEN (PIPE_CRC_LINE_LEN + 1)
3492
3493 static int pipe_crc_data_count(struct intel_pipe_crc *pipe_crc)
3494 {
3495 assert_spin_locked(&pipe_crc->lock);
3496 return CIRC_CNT(pipe_crc->head, pipe_crc->tail,
3497 INTEL_PIPE_CRC_ENTRIES_NR);
3498 }
3499
3500 static ssize_t
3501 i915_pipe_crc_read(struct file *filep, char __user *user_buf, size_t count,
3502 loff_t *pos)
3503 {
3504 struct pipe_crc_info *info = filep->private_data;
3505 struct drm_device *dev = info->dev;
3506 struct drm_i915_private *dev_priv = dev->dev_private;
3507 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
3508 char buf[PIPE_CRC_BUFFER_LEN];
3509 int n_entries;
3510 ssize_t bytes_read;
3511
3512 /*
3513 * Don't allow user space to provide buffers not big enough to hold
3514 * a line of data.
3515 */
3516 if (count < PIPE_CRC_LINE_LEN)
3517 return -EINVAL;
3518
3519 if (pipe_crc->source == INTEL_PIPE_CRC_SOURCE_NONE)
3520 return 0;
3521
3522 /* nothing to read */
3523 spin_lock_irq(&pipe_crc->lock);
3524 while (pipe_crc_data_count(pipe_crc) == 0) {
3525 int ret;
3526
3527 if (filep->f_flags & O_NONBLOCK) {
3528 spin_unlock_irq(&pipe_crc->lock);
3529 return -EAGAIN;
3530 }
3531
3532 ret = wait_event_interruptible_lock_irq(pipe_crc->wq,
3533 pipe_crc_data_count(pipe_crc), pipe_crc->lock);
3534 if (ret) {
3535 spin_unlock_irq(&pipe_crc->lock);
3536 return ret;
3537 }
3538 }
3539
3540 /* We now have one or more entries to read */
3541 n_entries = count / PIPE_CRC_LINE_LEN;
3542
3543 bytes_read = 0;
3544 while (n_entries > 0) {
3545 struct intel_pipe_crc_entry *entry =
3546 &pipe_crc->entries[pipe_crc->tail];
3547 int ret;
3548
3549 if (CIRC_CNT(pipe_crc->head, pipe_crc->tail,
3550 INTEL_PIPE_CRC_ENTRIES_NR) < 1)
3551 break;
3552
3553 BUILD_BUG_ON_NOT_POWER_OF_2(INTEL_PIPE_CRC_ENTRIES_NR);
3554 pipe_crc->tail = (pipe_crc->tail + 1) & (INTEL_PIPE_CRC_ENTRIES_NR - 1);
3555
3556 bytes_read += snprintf(buf, PIPE_CRC_BUFFER_LEN,
3557 "%8u %8x %8x %8x %8x %8x\n",
3558 entry->frame, entry->crc[0],
3559 entry->crc[1], entry->crc[2],
3560 entry->crc[3], entry->crc[4]);
3561
3562 spin_unlock_irq(&pipe_crc->lock);
3563
3564 ret = copy_to_user(user_buf, buf, PIPE_CRC_LINE_LEN);
3565 if (ret == PIPE_CRC_LINE_LEN)
3566 return -EFAULT;
3567
3568 user_buf += PIPE_CRC_LINE_LEN;
3569 n_entries--;
3570
3571 spin_lock_irq(&pipe_crc->lock);
3572 }
3573
3574 spin_unlock_irq(&pipe_crc->lock);
3575
3576 return bytes_read;
3577 }
3578
3579 static const struct file_operations i915_pipe_crc_fops = {
3580 .owner = THIS_MODULE,
3581 .open = i915_pipe_crc_open,
3582 .read = i915_pipe_crc_read,
3583 .release = i915_pipe_crc_release,
3584 };
3585
3586 static struct pipe_crc_info i915_pipe_crc_data[I915_MAX_PIPES] = {
3587 {
3588 .name = "i915_pipe_A_crc",
3589 .pipe = PIPE_A,
3590 },
3591 {
3592 .name = "i915_pipe_B_crc",
3593 .pipe = PIPE_B,
3594 },
3595 {
3596 .name = "i915_pipe_C_crc",
3597 .pipe = PIPE_C,
3598 },
3599 };
3600
3601 static int i915_pipe_crc_create(struct dentry *root, struct drm_minor *minor,
3602 enum pipe pipe)
3603 {
3604 struct drm_device *dev = minor->dev;
3605 struct dentry *ent;
3606 struct pipe_crc_info *info = &i915_pipe_crc_data[pipe];
3607
3608 info->dev = dev;
3609 ent = debugfs_create_file(info->name, S_IRUGO, root, info,
3610 &i915_pipe_crc_fops);
3611 if (!ent)
3612 return -ENOMEM;
3613
3614 return drm_add_fake_info_node(minor, ent, info);
3615 }
3616
3617 static const char * const pipe_crc_sources[] = {
3618 "none",
3619 "plane1",
3620 "plane2",
3621 "pf",
3622 "pipe",
3623 "TV",
3624 "DP-B",
3625 "DP-C",
3626 "DP-D",
3627 "auto",
3628 };
3629
3630 static const char *pipe_crc_source_name(enum intel_pipe_crc_source source)
3631 {
3632 BUILD_BUG_ON(ARRAY_SIZE(pipe_crc_sources) != INTEL_PIPE_CRC_SOURCE_MAX);
3633 return pipe_crc_sources[source];
3634 }
3635
3636 static int display_crc_ctl_show(struct seq_file *m, void *data)
3637 {
3638 struct drm_device *dev = m->private;
3639 struct drm_i915_private *dev_priv = dev->dev_private;
3640 int i;
3641
3642 for (i = 0; i < I915_MAX_PIPES; i++)
3643 seq_printf(m, "%c %s\n", pipe_name(i),
3644 pipe_crc_source_name(dev_priv->pipe_crc[i].source));
3645
3646 return 0;
3647 }
3648
3649 static int display_crc_ctl_open(struct inode *inode, struct file *file)
3650 {
3651 struct drm_device *dev = inode->i_private;
3652
3653 return single_open(file, display_crc_ctl_show, dev);
3654 }
3655
3656 static int i8xx_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
3657 uint32_t *val)
3658 {
3659 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
3660 *source = INTEL_PIPE_CRC_SOURCE_PIPE;
3661
3662 switch (*source) {
3663 case INTEL_PIPE_CRC_SOURCE_PIPE:
3664 *val = PIPE_CRC_ENABLE | PIPE_CRC_INCLUDE_BORDER_I8XX;
3665 break;
3666 case INTEL_PIPE_CRC_SOURCE_NONE:
3667 *val = 0;
3668 break;
3669 default:
3670 return -EINVAL;
3671 }
3672
3673 return 0;
3674 }
3675
3676 static int i9xx_pipe_crc_auto_source(struct drm_device *dev, enum pipe pipe,
3677 enum intel_pipe_crc_source *source)
3678 {
3679 struct intel_encoder *encoder;
3680 struct intel_crtc *crtc;
3681 struct intel_digital_port *dig_port;
3682 int ret = 0;
3683
3684 *source = INTEL_PIPE_CRC_SOURCE_PIPE;
3685
3686 drm_modeset_lock_all(dev);
3687 for_each_intel_encoder(dev, encoder) {
3688 if (!encoder->base.crtc)
3689 continue;
3690
3691 crtc = to_intel_crtc(encoder->base.crtc);
3692
3693 if (crtc->pipe != pipe)
3694 continue;
3695
3696 switch (encoder->type) {
3697 case INTEL_OUTPUT_TVOUT:
3698 *source = INTEL_PIPE_CRC_SOURCE_TV;
3699 break;
3700 case INTEL_OUTPUT_DISPLAYPORT:
3701 case INTEL_OUTPUT_EDP:
3702 dig_port = enc_to_dig_port(&encoder->base);
3703 switch (dig_port->port) {
3704 case PORT_B:
3705 *source = INTEL_PIPE_CRC_SOURCE_DP_B;
3706 break;
3707 case PORT_C:
3708 *source = INTEL_PIPE_CRC_SOURCE_DP_C;
3709 break;
3710 case PORT_D:
3711 *source = INTEL_PIPE_CRC_SOURCE_DP_D;
3712 break;
3713 default:
3714 WARN(1, "nonexisting DP port %c\n",
3715 port_name(dig_port->port));
3716 break;
3717 }
3718 break;
3719 default:
3720 break;
3721 }
3722 }
3723 drm_modeset_unlock_all(dev);
3724
3725 return ret;
3726 }
3727
3728 static int vlv_pipe_crc_ctl_reg(struct drm_device *dev,
3729 enum pipe pipe,
3730 enum intel_pipe_crc_source *source,
3731 uint32_t *val)
3732 {
3733 struct drm_i915_private *dev_priv = dev->dev_private;
3734 bool need_stable_symbols = false;
3735
3736 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
3737 int ret = i9xx_pipe_crc_auto_source(dev, pipe, source);
3738 if (ret)
3739 return ret;
3740 }
3741
3742 switch (*source) {
3743 case INTEL_PIPE_CRC_SOURCE_PIPE:
3744 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_VLV;
3745 break;
3746 case INTEL_PIPE_CRC_SOURCE_DP_B:
3747 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_VLV;
3748 need_stable_symbols = true;
3749 break;
3750 case INTEL_PIPE_CRC_SOURCE_DP_C:
3751 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_VLV;
3752 need_stable_symbols = true;
3753 break;
3754 case INTEL_PIPE_CRC_SOURCE_DP_D:
3755 if (!IS_CHERRYVIEW(dev))
3756 return -EINVAL;
3757 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_VLV;
3758 need_stable_symbols = true;
3759 break;
3760 case INTEL_PIPE_CRC_SOURCE_NONE:
3761 *val = 0;
3762 break;
3763 default:
3764 return -EINVAL;
3765 }
3766
3767 /*
3768 * When the pipe CRC tap point is after the transcoders we need
3769 * to tweak symbol-level features to produce a deterministic series of
3770 * symbols for a given frame. We need to reset those features only once
3771 * a frame (instead of every nth symbol):
3772 * - DC-balance: used to ensure a better clock recovery from the data
3773 * link (SDVO)
3774 * - DisplayPort scrambling: used for EMI reduction
3775 */
3776 if (need_stable_symbols) {
3777 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3778
3779 tmp |= DC_BALANCE_RESET_VLV;
3780 switch (pipe) {
3781 case PIPE_A:
3782 tmp |= PIPE_A_SCRAMBLE_RESET;
3783 break;
3784 case PIPE_B:
3785 tmp |= PIPE_B_SCRAMBLE_RESET;
3786 break;
3787 case PIPE_C:
3788 tmp |= PIPE_C_SCRAMBLE_RESET;
3789 break;
3790 default:
3791 return -EINVAL;
3792 }
3793 I915_WRITE(PORT_DFT2_G4X, tmp);
3794 }
3795
3796 return 0;
3797 }
3798
3799 static int i9xx_pipe_crc_ctl_reg(struct drm_device *dev,
3800 enum pipe pipe,
3801 enum intel_pipe_crc_source *source,
3802 uint32_t *val)
3803 {
3804 struct drm_i915_private *dev_priv = dev->dev_private;
3805 bool need_stable_symbols = false;
3806
3807 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
3808 int ret = i9xx_pipe_crc_auto_source(dev, pipe, source);
3809 if (ret)
3810 return ret;
3811 }
3812
3813 switch (*source) {
3814 case INTEL_PIPE_CRC_SOURCE_PIPE:
3815 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_I9XX;
3816 break;
3817 case INTEL_PIPE_CRC_SOURCE_TV:
3818 if (!SUPPORTS_TV(dev))
3819 return -EINVAL;
3820 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_TV_PRE;
3821 break;
3822 case INTEL_PIPE_CRC_SOURCE_DP_B:
3823 if (!IS_G4X(dev))
3824 return -EINVAL;
3825 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_G4X;
3826 need_stable_symbols = true;
3827 break;
3828 case INTEL_PIPE_CRC_SOURCE_DP_C:
3829 if (!IS_G4X(dev))
3830 return -EINVAL;
3831 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_G4X;
3832 need_stable_symbols = true;
3833 break;
3834 case INTEL_PIPE_CRC_SOURCE_DP_D:
3835 if (!IS_G4X(dev))
3836 return -EINVAL;
3837 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_G4X;
3838 need_stable_symbols = true;
3839 break;
3840 case INTEL_PIPE_CRC_SOURCE_NONE:
3841 *val = 0;
3842 break;
3843 default:
3844 return -EINVAL;
3845 }
3846
3847 /*
3848 * When the pipe CRC tap point is after the transcoders we need
3849 * to tweak symbol-level features to produce a deterministic series of
3850 * symbols for a given frame. We need to reset those features only once
3851 * a frame (instead of every nth symbol):
3852 * - DC-balance: used to ensure a better clock recovery from the data
3853 * link (SDVO)
3854 * - DisplayPort scrambling: used for EMI reduction
3855 */
3856 if (need_stable_symbols) {
3857 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3858
3859 WARN_ON(!IS_G4X(dev));
3860
3861 I915_WRITE(PORT_DFT_I9XX,
3862 I915_READ(PORT_DFT_I9XX) | DC_BALANCE_RESET);
3863
3864 if (pipe == PIPE_A)
3865 tmp |= PIPE_A_SCRAMBLE_RESET;
3866 else
3867 tmp |= PIPE_B_SCRAMBLE_RESET;
3868
3869 I915_WRITE(PORT_DFT2_G4X, tmp);
3870 }
3871
3872 return 0;
3873 }
3874
3875 static void vlv_undo_pipe_scramble_reset(struct drm_device *dev,
3876 enum pipe pipe)
3877 {
3878 struct drm_i915_private *dev_priv = dev->dev_private;
3879 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3880
3881 switch (pipe) {
3882 case PIPE_A:
3883 tmp &= ~PIPE_A_SCRAMBLE_RESET;
3884 break;
3885 case PIPE_B:
3886 tmp &= ~PIPE_B_SCRAMBLE_RESET;
3887 break;
3888 case PIPE_C:
3889 tmp &= ~PIPE_C_SCRAMBLE_RESET;
3890 break;
3891 default:
3892 return;
3893 }
3894 if (!(tmp & PIPE_SCRAMBLE_RESET_MASK))
3895 tmp &= ~DC_BALANCE_RESET_VLV;
3896 I915_WRITE(PORT_DFT2_G4X, tmp);
3897
3898 }
3899
3900 static void g4x_undo_pipe_scramble_reset(struct drm_device *dev,
3901 enum pipe pipe)
3902 {
3903 struct drm_i915_private *dev_priv = dev->dev_private;
3904 uint32_t tmp = I915_READ(PORT_DFT2_G4X);
3905
3906 if (pipe == PIPE_A)
3907 tmp &= ~PIPE_A_SCRAMBLE_RESET;
3908 else
3909 tmp &= ~PIPE_B_SCRAMBLE_RESET;
3910 I915_WRITE(PORT_DFT2_G4X, tmp);
3911
3912 if (!(tmp & PIPE_SCRAMBLE_RESET_MASK)) {
3913 I915_WRITE(PORT_DFT_I9XX,
3914 I915_READ(PORT_DFT_I9XX) & ~DC_BALANCE_RESET);
3915 }
3916 }
3917
3918 static int ilk_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
3919 uint32_t *val)
3920 {
3921 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
3922 *source = INTEL_PIPE_CRC_SOURCE_PIPE;
3923
3924 switch (*source) {
3925 case INTEL_PIPE_CRC_SOURCE_PLANE1:
3926 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_ILK;
3927 break;
3928 case INTEL_PIPE_CRC_SOURCE_PLANE2:
3929 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_ILK;
3930 break;
3931 case INTEL_PIPE_CRC_SOURCE_PIPE:
3932 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_ILK;
3933 break;
3934 case INTEL_PIPE_CRC_SOURCE_NONE:
3935 *val = 0;
3936 break;
3937 default:
3938 return -EINVAL;
3939 }
3940
3941 return 0;
3942 }
3943
3944 static void hsw_trans_edp_pipe_A_crc_wa(struct drm_device *dev, bool enable)
3945 {
3946 struct drm_i915_private *dev_priv = dev->dev_private;
3947 struct intel_crtc *crtc =
3948 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[PIPE_A]);
3949 struct intel_crtc_state *pipe_config;
3950 struct drm_atomic_state *state;
3951 int ret = 0;
3952
3953 drm_modeset_lock_all(dev);
3954 state = drm_atomic_state_alloc(dev);
3955 if (!state) {
3956 ret = -ENOMEM;
3957 goto out;
3958 }
3959
3960 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(&crtc->base);
3961 pipe_config = intel_atomic_get_crtc_state(state, crtc);
3962 if (IS_ERR(pipe_config)) {
3963 ret = PTR_ERR(pipe_config);
3964 goto out;
3965 }
3966
3967 pipe_config->pch_pfit.force_thru = enable;
3968 if (pipe_config->cpu_transcoder == TRANSCODER_EDP &&
3969 pipe_config->pch_pfit.enabled != enable)
3970 pipe_config->base.connectors_changed = true;
3971
3972 ret = drm_atomic_commit(state);
3973 out:
3974 drm_modeset_unlock_all(dev);
3975 WARN(ret, "Toggling workaround to %i returns %i\n", enable, ret);
3976 if (ret)
3977 drm_atomic_state_free(state);
3978 }
3979
3980 static int ivb_pipe_crc_ctl_reg(struct drm_device *dev,
3981 enum pipe pipe,
3982 enum intel_pipe_crc_source *source,
3983 uint32_t *val)
3984 {
3985 if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
3986 *source = INTEL_PIPE_CRC_SOURCE_PF;
3987
3988 switch (*source) {
3989 case INTEL_PIPE_CRC_SOURCE_PLANE1:
3990 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_IVB;
3991 break;
3992 case INTEL_PIPE_CRC_SOURCE_PLANE2:
3993 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_IVB;
3994 break;
3995 case INTEL_PIPE_CRC_SOURCE_PF:
3996 if (IS_HASWELL(dev) && pipe == PIPE_A)
3997 hsw_trans_edp_pipe_A_crc_wa(dev, true);
3998
3999 *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PF_IVB;
4000 break;
4001 case INTEL_PIPE_CRC_SOURCE_NONE:
4002 *val = 0;
4003 break;
4004 default:
4005 return -EINVAL;
4006 }
4007
4008 return 0;
4009 }
4010
4011 static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
4012 enum intel_pipe_crc_source source)
4013 {
4014 struct drm_i915_private *dev_priv = dev->dev_private;
4015 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
4016 struct intel_crtc *crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev,
4017 pipe));
4018 enum intel_display_power_domain power_domain;
4019 u32 val = 0; /* shut up gcc */
4020 int ret;
4021
4022 if (pipe_crc->source == source)
4023 return 0;
4024
4025 /* forbid changing the source without going back to 'none' */
4026 if (pipe_crc->source && source)
4027 return -EINVAL;
4028
4029 power_domain = POWER_DOMAIN_PIPE(pipe);
4030 if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) {
4031 DRM_DEBUG_KMS("Trying to capture CRC while pipe is off\n");
4032 return -EIO;
4033 }
4034
4035 if (IS_GEN2(dev))
4036 ret = i8xx_pipe_crc_ctl_reg(&source, &val);
4037 else if (INTEL_INFO(dev)->gen < 5)
4038 ret = i9xx_pipe_crc_ctl_reg(dev, pipe, &source, &val);
4039 else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
4040 ret = vlv_pipe_crc_ctl_reg(dev, pipe, &source, &val);
4041 else if (IS_GEN5(dev) || IS_GEN6(dev))
4042 ret = ilk_pipe_crc_ctl_reg(&source, &val);
4043 else
4044 ret = ivb_pipe_crc_ctl_reg(dev, pipe, &source, &val);
4045
4046 if (ret != 0)
4047 goto out;
4048
4049 /* none -> real source transition */
4050 if (source) {
4051 struct intel_pipe_crc_entry *entries;
4052
4053 DRM_DEBUG_DRIVER("collecting CRCs for pipe %c, %s\n",
4054 pipe_name(pipe), pipe_crc_source_name(source));
4055
4056 entries = kcalloc(INTEL_PIPE_CRC_ENTRIES_NR,
4057 sizeof(pipe_crc->entries[0]),
4058 GFP_KERNEL);
4059 if (!entries) {
4060 ret = -ENOMEM;
4061 goto out;
4062 }
4063
4064 /*
4065 * When IPS gets enabled, the pipe CRC changes. Since IPS gets
4066 * enabled and disabled dynamically based on package C states,
4067 * user space can't make reliable use of the CRCs, so let's just
4068 * completely disable it.
4069 */
4070 hsw_disable_ips(crtc);
4071
4072 spin_lock_irq(&pipe_crc->lock);
4073 kfree(pipe_crc->entries);
4074 pipe_crc->entries = entries;
4075 pipe_crc->head = 0;
4076 pipe_crc->tail = 0;
4077 spin_unlock_irq(&pipe_crc->lock);
4078 }
4079
4080 pipe_crc->source = source;
4081
4082 I915_WRITE(PIPE_CRC_CTL(pipe), val);
4083 POSTING_READ(PIPE_CRC_CTL(pipe));
4084
4085 /* real source -> none transition */
4086 if (source == INTEL_PIPE_CRC_SOURCE_NONE) {
4087 struct intel_pipe_crc_entry *entries;
4088 struct intel_crtc *crtc =
4089 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
4090
4091 DRM_DEBUG_DRIVER("stopping CRCs for pipe %c\n",
4092 pipe_name(pipe));
4093
4094 drm_modeset_lock(&crtc->base.mutex, NULL);
4095 if (crtc->base.state->active)
4096 intel_wait_for_vblank(dev, pipe);
4097 drm_modeset_unlock(&crtc->base.mutex);
4098
4099 spin_lock_irq(&pipe_crc->lock);
4100 entries = pipe_crc->entries;
4101 pipe_crc->entries = NULL;
4102 pipe_crc->head = 0;
4103 pipe_crc->tail = 0;
4104 spin_unlock_irq(&pipe_crc->lock);
4105
4106 kfree(entries);
4107
4108 if (IS_G4X(dev))
4109 g4x_undo_pipe_scramble_reset(dev, pipe);
4110 else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
4111 vlv_undo_pipe_scramble_reset(dev, pipe);
4112 else if (IS_HASWELL(dev) && pipe == PIPE_A)
4113 hsw_trans_edp_pipe_A_crc_wa(dev, false);
4114
4115 hsw_enable_ips(crtc);
4116 }
4117
4118 ret = 0;
4119
4120 out:
4121 intel_display_power_put(dev_priv, power_domain);
4122
4123 return ret;
4124 }
4125
4126 /*
4127 * Parse pipe CRC command strings:
4128 * command: wsp* object wsp+ name wsp+ source wsp*
4129 * object: 'pipe'
4130 * name: (A | B | C)
4131 * source: (none | plane1 | plane2 | pf)
4132 * wsp: (#0x20 | #0x9 | #0xA)+
4133 *
4134 * eg.:
4135 * "pipe A plane1" -> Start CRC computations on plane1 of pipe A
4136 * "pipe A none" -> Stop CRC
4137 */
4138 static int display_crc_ctl_tokenize(char *buf, char *words[], int max_words)
4139 {
4140 int n_words = 0;
4141
4142 while (*buf) {
4143 char *end;
4144
4145 /* skip leading white space */
4146 buf = skip_spaces(buf);
4147 if (!*buf)
4148 break; /* end of buffer */
4149
4150 /* find end of word */
4151 for (end = buf; *end && !isspace(*end); end++)
4152 ;
4153
4154 if (n_words == max_words) {
4155 DRM_DEBUG_DRIVER("too many words, allowed <= %d\n",
4156 max_words);
4157 return -EINVAL; /* ran out of words[] before bytes */
4158 }
4159
4160 if (*end)
4161 *end++ = '\0';
4162 words[n_words++] = buf;
4163 buf = end;
4164 }
4165
4166 return n_words;
4167 }
4168
4169 enum intel_pipe_crc_object {
4170 PIPE_CRC_OBJECT_PIPE,
4171 };
4172
4173 static const char * const pipe_crc_objects[] = {
4174 "pipe",
4175 };
4176
4177 static int
4178 display_crc_ctl_parse_object(const char *buf, enum intel_pipe_crc_object *o)
4179 {
4180 int i;
4181
4182 for (i = 0; i < ARRAY_SIZE(pipe_crc_objects); i++)
4183 if (!strcmp(buf, pipe_crc_objects[i])) {
4184 *o = i;
4185 return 0;
4186 }
4187
4188 return -EINVAL;
4189 }
4190
4191 static int display_crc_ctl_parse_pipe(const char *buf, enum pipe *pipe)
4192 {
4193 const char name = buf[0];
4194
4195 if (name < 'A' || name >= pipe_name(I915_MAX_PIPES))
4196 return -EINVAL;
4197
4198 *pipe = name - 'A';
4199
4200 return 0;
4201 }
4202
4203 static int
4204 display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s)
4205 {
4206 int i;
4207
4208 for (i = 0; i < ARRAY_SIZE(pipe_crc_sources); i++)
4209 if (!strcmp(buf, pipe_crc_sources[i])) {
4210 *s = i;
4211 return 0;
4212 }
4213
4214 return -EINVAL;
4215 }
4216
4217 static int display_crc_ctl_parse(struct drm_device *dev, char *buf, size_t len)
4218 {
4219 #define N_WORDS 3
4220 int n_words;
4221 char *words[N_WORDS];
4222 enum pipe pipe;
4223 enum intel_pipe_crc_object object;
4224 enum intel_pipe_crc_source source;
4225
4226 n_words = display_crc_ctl_tokenize(buf, words, N_WORDS);
4227 if (n_words != N_WORDS) {
4228 DRM_DEBUG_DRIVER("tokenize failed, a command is %d words\n",
4229 N_WORDS);
4230 return -EINVAL;
4231 }
4232
4233 if (display_crc_ctl_parse_object(words[0], &object) < 0) {
4234 DRM_DEBUG_DRIVER("unknown object %s\n", words[0]);
4235 return -EINVAL;
4236 }
4237
4238 if (display_crc_ctl_parse_pipe(words[1], &pipe) < 0) {
4239 DRM_DEBUG_DRIVER("unknown pipe %s\n", words[1]);
4240 return -EINVAL;
4241 }
4242
4243 if (display_crc_ctl_parse_source(words[2], &source) < 0) {
4244 DRM_DEBUG_DRIVER("unknown source %s\n", words[2]);
4245 return -EINVAL;
4246 }
4247
4248 return pipe_crc_set_source(dev, pipe, source);
4249 }
4250
4251 static ssize_t display_crc_ctl_write(struct file *file, const char __user *ubuf,
4252 size_t len, loff_t *offp)
4253 {
4254 struct seq_file *m = file->private_data;
4255 struct drm_device *dev = m->private;
4256 char *tmpbuf;
4257 int ret;
4258
4259 if (len == 0)
4260 return 0;
4261
4262 if (len > PAGE_SIZE - 1) {
4263 DRM_DEBUG_DRIVER("expected <%lu bytes into pipe crc control\n",
4264 PAGE_SIZE);
4265 return -E2BIG;
4266 }
4267
4268 tmpbuf = kmalloc(len + 1, GFP_KERNEL);
4269 if (!tmpbuf)
4270 return -ENOMEM;
4271
4272 if (copy_from_user(tmpbuf, ubuf, len)) {
4273 ret = -EFAULT;
4274 goto out;
4275 }
4276 tmpbuf[len] = '\0';
4277
4278 ret = display_crc_ctl_parse(dev, tmpbuf, len);
4279
4280 out:
4281 kfree(tmpbuf);
4282 if (ret < 0)
4283 return ret;
4284
4285 *offp += len;
4286 return len;
4287 }
4288
4289 static const struct file_operations i915_display_crc_ctl_fops = {
4290 .owner = THIS_MODULE,
4291 .open = display_crc_ctl_open,
4292 .read = seq_read,
4293 .llseek = seq_lseek,
4294 .release = single_release,
4295 .write = display_crc_ctl_write
4296 };
4297
4298 static ssize_t i915_displayport_test_active_write(struct file *file,
4299 const char __user *ubuf,
4300 size_t len, loff_t *offp)
4301 {
4302 char *input_buffer;
4303 int status = 0;
4304 struct drm_device *dev;
4305 struct drm_connector *connector;
4306 struct list_head *connector_list;
4307 struct intel_dp *intel_dp;
4308 int val = 0;
4309
4310 dev = ((struct seq_file *)file->private_data)->private;
4311
4312 connector_list = &dev->mode_config.connector_list;
4313
4314 if (len == 0)
4315 return 0;
4316
4317 input_buffer = kmalloc(len + 1, GFP_KERNEL);
4318 if (!input_buffer)
4319 return -ENOMEM;
4320
4321 if (copy_from_user(input_buffer, ubuf, len)) {
4322 status = -EFAULT;
4323 goto out;
4324 }
4325
4326 input_buffer[len] = '\0';
4327 DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len);
4328
4329 list_for_each_entry(connector, connector_list, head) {
4330
4331 if (connector->connector_type !=
4332 DRM_MODE_CONNECTOR_DisplayPort)
4333 continue;
4334
4335 if (connector->status == connector_status_connected &&
4336 connector->encoder != NULL) {
4337 intel_dp = enc_to_intel_dp(connector->encoder);
4338 status = kstrtoint(input_buffer, 10, &val);
4339 if (status < 0)
4340 goto out;
4341 DRM_DEBUG_DRIVER("Got %d for test active\n", val);
4342 /* To prevent erroneous activation of the compliance
4343 * testing code, only accept an actual value of 1 here
4344 */
4345 if (val == 1)
4346 intel_dp->compliance_test_active = 1;
4347 else
4348 intel_dp->compliance_test_active = 0;
4349 }
4350 }
4351 out:
4352 kfree(input_buffer);
4353 if (status < 0)
4354 return status;
4355
4356 *offp += len;
4357 return len;
4358 }
4359
4360 static int i915_displayport_test_active_show(struct seq_file *m, void *data)
4361 {
4362 struct drm_device *dev = m->private;
4363 struct drm_connector *connector;
4364 struct list_head *connector_list = &dev->mode_config.connector_list;
4365 struct intel_dp *intel_dp;
4366
4367 list_for_each_entry(connector, connector_list, head) {
4368
4369 if (connector->connector_type !=
4370 DRM_MODE_CONNECTOR_DisplayPort)
4371 continue;
4372
4373 if (connector->status == connector_status_connected &&
4374 connector->encoder != NULL) {
4375 intel_dp = enc_to_intel_dp(connector->encoder);
4376 if (intel_dp->compliance_test_active)
4377 seq_puts(m, "1");
4378 else
4379 seq_puts(m, "0");
4380 } else
4381 seq_puts(m, "0");
4382 }
4383
4384 return 0;
4385 }
4386
4387 static int i915_displayport_test_active_open(struct inode *inode,
4388 struct file *file)
4389 {
4390 struct drm_device *dev = inode->i_private;
4391
4392 return single_open(file, i915_displayport_test_active_show, dev);
4393 }
4394
4395 static const struct file_operations i915_displayport_test_active_fops = {
4396 .owner = THIS_MODULE,
4397 .open = i915_displayport_test_active_open,
4398 .read = seq_read,
4399 .llseek = seq_lseek,
4400 .release = single_release,
4401 .write = i915_displayport_test_active_write
4402 };
4403
4404 static int i915_displayport_test_data_show(struct seq_file *m, void *data)
4405 {
4406 struct drm_device *dev = m->private;
4407 struct drm_connector *connector;
4408 struct list_head *connector_list = &dev->mode_config.connector_list;
4409 struct intel_dp *intel_dp;
4410
4411 list_for_each_entry(connector, connector_list, head) {
4412
4413 if (connector->connector_type !=
4414 DRM_MODE_CONNECTOR_DisplayPort)
4415 continue;
4416
4417 if (connector->status == connector_status_connected &&
4418 connector->encoder != NULL) {
4419 intel_dp = enc_to_intel_dp(connector->encoder);
4420 seq_printf(m, "%lx", intel_dp->compliance_test_data);
4421 } else
4422 seq_puts(m, "0");
4423 }
4424
4425 return 0;
4426 }
4427 static int i915_displayport_test_data_open(struct inode *inode,
4428 struct file *file)
4429 {
4430 struct drm_device *dev = inode->i_private;
4431
4432 return single_open(file, i915_displayport_test_data_show, dev);
4433 }
4434
4435 static const struct file_operations i915_displayport_test_data_fops = {
4436 .owner = THIS_MODULE,
4437 .open = i915_displayport_test_data_open,
4438 .read = seq_read,
4439 .llseek = seq_lseek,
4440 .release = single_release
4441 };
4442
4443 static int i915_displayport_test_type_show(struct seq_file *m, void *data)
4444 {
4445 struct drm_device *dev = m->private;
4446 struct drm_connector *connector;
4447 struct list_head *connector_list = &dev->mode_config.connector_list;
4448 struct intel_dp *intel_dp;
4449
4450 list_for_each_entry(connector, connector_list, head) {
4451
4452 if (connector->connector_type !=
4453 DRM_MODE_CONNECTOR_DisplayPort)
4454 continue;
4455
4456 if (connector->status == connector_status_connected &&
4457 connector->encoder != NULL) {
4458 intel_dp = enc_to_intel_dp(connector->encoder);
4459 seq_printf(m, "%02lx", intel_dp->compliance_test_type);
4460 } else
4461 seq_puts(m, "0");
4462 }
4463
4464 return 0;
4465 }
4466
4467 static int i915_displayport_test_type_open(struct inode *inode,
4468 struct file *file)
4469 {
4470 struct drm_device *dev = inode->i_private;
4471
4472 return single_open(file, i915_displayport_test_type_show, dev);
4473 }
4474
4475 static const struct file_operations i915_displayport_test_type_fops = {
4476 .owner = THIS_MODULE,
4477 .open = i915_displayport_test_type_open,
4478 .read = seq_read,
4479 .llseek = seq_lseek,
4480 .release = single_release
4481 };
4482
4483 static void wm_latency_show(struct seq_file *m, const uint16_t wm[8])
4484 {
4485 struct drm_device *dev = m->private;
4486 int level;
4487 int num_levels;
4488
4489 if (IS_CHERRYVIEW(dev))
4490 num_levels = 3;
4491 else if (IS_VALLEYVIEW(dev))
4492 num_levels = 1;
4493 else
4494 num_levels = ilk_wm_max_level(dev) + 1;
4495
4496 drm_modeset_lock_all(dev);
4497
4498 for (level = 0; level < num_levels; level++) {
4499 unsigned int latency = wm[level];
4500
4501 /*
4502 * - WM1+ latency values in 0.5us units
4503 * - latencies are in us on gen9/vlv/chv
4504 */
4505 if (INTEL_INFO(dev)->gen >= 9 || IS_VALLEYVIEW(dev) ||
4506 IS_CHERRYVIEW(dev))
4507 latency *= 10;
4508 else if (level > 0)
4509 latency *= 5;
4510
4511 seq_printf(m, "WM%d %u (%u.%u usec)\n",
4512 level, wm[level], latency / 10, latency % 10);
4513 }
4514
4515 drm_modeset_unlock_all(dev);
4516 }
4517
4518 static int pri_wm_latency_show(struct seq_file *m, void *data)
4519 {
4520 struct drm_device *dev = m->private;
4521 struct drm_i915_private *dev_priv = dev->dev_private;
4522 const uint16_t *latencies;
4523
4524 if (INTEL_INFO(dev)->gen >= 9)
4525 latencies = dev_priv->wm.skl_latency;
4526 else
4527 latencies = to_i915(dev)->wm.pri_latency;
4528
4529 wm_latency_show(m, latencies);
4530
4531 return 0;
4532 }
4533
4534 static int spr_wm_latency_show(struct seq_file *m, void *data)
4535 {
4536 struct drm_device *dev = m->private;
4537 struct drm_i915_private *dev_priv = dev->dev_private;
4538 const uint16_t *latencies;
4539
4540 if (INTEL_INFO(dev)->gen >= 9)
4541 latencies = dev_priv->wm.skl_latency;
4542 else
4543 latencies = to_i915(dev)->wm.spr_latency;
4544
4545 wm_latency_show(m, latencies);
4546
4547 return 0;
4548 }
4549
4550 static int cur_wm_latency_show(struct seq_file *m, void *data)
4551 {
4552 struct drm_device *dev = m->private;
4553 struct drm_i915_private *dev_priv = dev->dev_private;
4554 const uint16_t *latencies;
4555
4556 if (INTEL_INFO(dev)->gen >= 9)
4557 latencies = dev_priv->wm.skl_latency;
4558 else
4559 latencies = to_i915(dev)->wm.cur_latency;
4560
4561 wm_latency_show(m, latencies);
4562
4563 return 0;
4564 }
4565
4566 static int pri_wm_latency_open(struct inode *inode, struct file *file)
4567 {
4568 struct drm_device *dev = inode->i_private;
4569
4570 if (INTEL_INFO(dev)->gen < 5)
4571 return -ENODEV;
4572
4573 return single_open(file, pri_wm_latency_show, dev);
4574 }
4575
4576 static int spr_wm_latency_open(struct inode *inode, struct file *file)
4577 {
4578 struct drm_device *dev = inode->i_private;
4579
4580 if (HAS_GMCH_DISPLAY(dev))
4581 return -ENODEV;
4582
4583 return single_open(file, spr_wm_latency_show, dev);
4584 }
4585
4586 static int cur_wm_latency_open(struct inode *inode, struct file *file)
4587 {
4588 struct drm_device *dev = inode->i_private;
4589
4590 if (HAS_GMCH_DISPLAY(dev))
4591 return -ENODEV;
4592
4593 return single_open(file, cur_wm_latency_show, dev);
4594 }
4595
4596 static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,
4597 size_t len, loff_t *offp, uint16_t wm[8])
4598 {
4599 struct seq_file *m = file->private_data;
4600 struct drm_device *dev = m->private;
4601 uint16_t new[8] = { 0 };
4602 int num_levels;
4603 int level;
4604 int ret;
4605 char tmp[32];
4606
4607 if (IS_CHERRYVIEW(dev))
4608 num_levels = 3;
4609 else if (IS_VALLEYVIEW(dev))
4610 num_levels = 1;
4611 else
4612 num_levels = ilk_wm_max_level(dev) + 1;
4613
4614 if (len >= sizeof(tmp))
4615 return -EINVAL;
4616
4617 if (copy_from_user(tmp, ubuf, len))
4618 return -EFAULT;
4619
4620 tmp[len] = '\0';
4621
4622 ret = sscanf(tmp, "%hu %hu %hu %hu %hu %hu %hu %hu",
4623 &new[0], &new[1], &new[2], &new[3],
4624 &new[4], &new[5], &new[6], &new[7]);
4625 if (ret != num_levels)
4626 return -EINVAL;
4627
4628 drm_modeset_lock_all(dev);
4629
4630 for (level = 0; level < num_levels; level++)
4631 wm[level] = new[level];
4632
4633 drm_modeset_unlock_all(dev);
4634
4635 return len;
4636 }
4637
4638
4639 static ssize_t pri_wm_latency_write(struct file *file, const char __user *ubuf,
4640 size_t len, loff_t *offp)
4641 {
4642 struct seq_file *m = file->private_data;
4643 struct drm_device *dev = m->private;
4644 struct drm_i915_private *dev_priv = dev->dev_private;
4645 uint16_t *latencies;
4646
4647 if (INTEL_INFO(dev)->gen >= 9)
4648 latencies = dev_priv->wm.skl_latency;
4649 else
4650 latencies = to_i915(dev)->wm.pri_latency;
4651
4652 return wm_latency_write(file, ubuf, len, offp, latencies);
4653 }
4654
4655 static ssize_t spr_wm_latency_write(struct file *file, const char __user *ubuf,
4656 size_t len, loff_t *offp)
4657 {
4658 struct seq_file *m = file->private_data;
4659 struct drm_device *dev = m->private;
4660 struct drm_i915_private *dev_priv = dev->dev_private;
4661 uint16_t *latencies;
4662
4663 if (INTEL_INFO(dev)->gen >= 9)
4664 latencies = dev_priv->wm.skl_latency;
4665 else
4666 latencies = to_i915(dev)->wm.spr_latency;
4667
4668 return wm_latency_write(file, ubuf, len, offp, latencies);
4669 }
4670
4671 static ssize_t cur_wm_latency_write(struct file *file, const char __user *ubuf,
4672 size_t len, loff_t *offp)
4673 {
4674 struct seq_file *m = file->private_data;
4675 struct drm_device *dev = m->private;
4676 struct drm_i915_private *dev_priv = dev->dev_private;
4677 uint16_t *latencies;
4678
4679 if (INTEL_INFO(dev)->gen >= 9)
4680 latencies = dev_priv->wm.skl_latency;
4681 else
4682 latencies = to_i915(dev)->wm.cur_latency;
4683
4684 return wm_latency_write(file, ubuf, len, offp, latencies);
4685 }
4686
4687 static const struct file_operations i915_pri_wm_latency_fops = {
4688 .owner = THIS_MODULE,
4689 .open = pri_wm_latency_open,
4690 .read = seq_read,
4691 .llseek = seq_lseek,
4692 .release = single_release,
4693 .write = pri_wm_latency_write
4694 };
4695
4696 static const struct file_operations i915_spr_wm_latency_fops = {
4697 .owner = THIS_MODULE,
4698 .open = spr_wm_latency_open,
4699 .read = seq_read,
4700 .llseek = seq_lseek,
4701 .release = single_release,
4702 .write = spr_wm_latency_write
4703 };
4704
4705 static const struct file_operations i915_cur_wm_latency_fops = {
4706 .owner = THIS_MODULE,
4707 .open = cur_wm_latency_open,
4708 .read = seq_read,
4709 .llseek = seq_lseek,
4710 .release = single_release,
4711 .write = cur_wm_latency_write
4712 };
4713
4714 static int
4715 i915_wedged_get(void *data, u64 *val)
4716 {
4717 struct drm_device *dev = data;
4718 struct drm_i915_private *dev_priv = dev->dev_private;
4719
4720 *val = atomic_read(&dev_priv->gpu_error.reset_counter);
4721
4722 return 0;
4723 }
4724
4725 static int
4726 i915_wedged_set(void *data, u64 val)
4727 {
4728 struct drm_device *dev = data;
4729 struct drm_i915_private *dev_priv = dev->dev_private;
4730
4731 /*
4732 * There is no safeguard against this debugfs entry colliding
4733 * with the hangcheck calling same i915_handle_error() in
4734 * parallel, causing an explosion. For now we assume that the
4735 * test harness is responsible enough not to inject gpu hangs
4736 * while it is writing to 'i915_wedged'
4737 */
4738
4739 if (i915_reset_in_progress(&dev_priv->gpu_error))
4740 return -EAGAIN;
4741
4742 intel_runtime_pm_get(dev_priv);
4743
4744 i915_handle_error(dev, val,
4745 "Manually setting wedged to %llu", val);
4746
4747 intel_runtime_pm_put(dev_priv);
4748
4749 return 0;
4750 }
4751
4752 DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops,
4753 i915_wedged_get, i915_wedged_set,
4754 "%llu\n");
4755
4756 static int
4757 i915_ring_stop_get(void *data, u64 *val)
4758 {
4759 struct drm_device *dev = data;
4760 struct drm_i915_private *dev_priv = dev->dev_private;
4761
4762 *val = dev_priv->gpu_error.stop_rings;
4763
4764 return 0;
4765 }
4766
4767 static int
4768 i915_ring_stop_set(void *data, u64 val)
4769 {
4770 struct drm_device *dev = data;
4771 struct drm_i915_private *dev_priv = dev->dev_private;
4772 int ret;
4773
4774 DRM_DEBUG_DRIVER("Stopping rings 0x%08llx\n", val);
4775
4776 ret = mutex_lock_interruptible(&dev->struct_mutex);
4777 if (ret)
4778 return ret;
4779
4780 dev_priv->gpu_error.stop_rings = val;
4781 mutex_unlock(&dev->struct_mutex);
4782
4783 return 0;
4784 }
4785
4786 DEFINE_SIMPLE_ATTRIBUTE(i915_ring_stop_fops,
4787 i915_ring_stop_get, i915_ring_stop_set,
4788 "0x%08llx\n");
4789
4790 static int
4791 i915_ring_missed_irq_get(void *data, u64 *val)
4792 {
4793 struct drm_device *dev = data;
4794 struct drm_i915_private *dev_priv = dev->dev_private;
4795
4796 *val = dev_priv->gpu_error.missed_irq_rings;
4797 return 0;
4798 }
4799
4800 static int
4801 i915_ring_missed_irq_set(void *data, u64 val)
4802 {
4803 struct drm_device *dev = data;
4804 struct drm_i915_private *dev_priv = dev->dev_private;
4805 int ret;
4806
4807 /* Lock against concurrent debugfs callers */
4808 ret = mutex_lock_interruptible(&dev->struct_mutex);
4809 if (ret)
4810 return ret;
4811 dev_priv->gpu_error.missed_irq_rings = val;
4812 mutex_unlock(&dev->struct_mutex);
4813
4814 return 0;
4815 }
4816
4817 DEFINE_SIMPLE_ATTRIBUTE(i915_ring_missed_irq_fops,
4818 i915_ring_missed_irq_get, i915_ring_missed_irq_set,
4819 "0x%08llx\n");
4820
4821 static int
4822 i915_ring_test_irq_get(void *data, u64 *val)
4823 {
4824 struct drm_device *dev = data;
4825 struct drm_i915_private *dev_priv = dev->dev_private;
4826
4827 *val = dev_priv->gpu_error.test_irq_rings;
4828
4829 return 0;
4830 }
4831
4832 static int
4833 i915_ring_test_irq_set(void *data, u64 val)
4834 {
4835 struct drm_device *dev = data;
4836 struct drm_i915_private *dev_priv = dev->dev_private;
4837 int ret;
4838
4839 DRM_DEBUG_DRIVER("Masking interrupts on rings 0x%08llx\n", val);
4840
4841 /* Lock against concurrent debugfs callers */
4842 ret = mutex_lock_interruptible(&dev->struct_mutex);
4843 if (ret)
4844 return ret;
4845
4846 dev_priv->gpu_error.test_irq_rings = val;
4847 mutex_unlock(&dev->struct_mutex);
4848
4849 return 0;
4850 }
4851
4852 DEFINE_SIMPLE_ATTRIBUTE(i915_ring_test_irq_fops,
4853 i915_ring_test_irq_get, i915_ring_test_irq_set,
4854 "0x%08llx\n");
4855
4856 #define DROP_UNBOUND 0x1
4857 #define DROP_BOUND 0x2
4858 #define DROP_RETIRE 0x4
4859 #define DROP_ACTIVE 0x8
4860 #define DROP_ALL (DROP_UNBOUND | \
4861 DROP_BOUND | \
4862 DROP_RETIRE | \
4863 DROP_ACTIVE)
4864 static int
4865 i915_drop_caches_get(void *data, u64 *val)
4866 {
4867 *val = DROP_ALL;
4868
4869 return 0;
4870 }
4871
4872 static int
4873 i915_drop_caches_set(void *data, u64 val)
4874 {
4875 struct drm_device *dev = data;
4876 struct drm_i915_private *dev_priv = dev->dev_private;
4877 int ret;
4878
4879 DRM_DEBUG("Dropping caches: 0x%08llx\n", val);
4880
4881 /* No need to check and wait for gpu resets, only libdrm auto-restarts
4882 * on ioctls on -EAGAIN. */
4883 ret = mutex_lock_interruptible(&dev->struct_mutex);
4884 if (ret)
4885 return ret;
4886
4887 if (val & DROP_ACTIVE) {
4888 ret = i915_gpu_idle(dev);
4889 if (ret)
4890 goto unlock;
4891 }
4892
4893 if (val & (DROP_RETIRE | DROP_ACTIVE))
4894 i915_gem_retire_requests(dev);
4895
4896 if (val & DROP_BOUND)
4897 i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_BOUND);
4898
4899 if (val & DROP_UNBOUND)
4900 i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_UNBOUND);
4901
4902 unlock:
4903 mutex_unlock(&dev->struct_mutex);
4904
4905 return ret;
4906 }
4907
4908 DEFINE_SIMPLE_ATTRIBUTE(i915_drop_caches_fops,
4909 i915_drop_caches_get, i915_drop_caches_set,
4910 "0x%08llx\n");
4911
4912 static int
4913 i915_max_freq_get(void *data, u64 *val)
4914 {
4915 struct drm_device *dev = data;
4916 struct drm_i915_private *dev_priv = dev->dev_private;
4917 int ret;
4918
4919 if (INTEL_INFO(dev)->gen < 6)
4920 return -ENODEV;
4921
4922 flush_delayed_work(&dev_priv->rps.delayed_resume_work);
4923
4924 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
4925 if (ret)
4926 return ret;
4927
4928 *val = intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit);
4929 mutex_unlock(&dev_priv->rps.hw_lock);
4930
4931 return 0;
4932 }
4933
4934 static int
4935 i915_max_freq_set(void *data, u64 val)
4936 {
4937 struct drm_device *dev = data;
4938 struct drm_i915_private *dev_priv = dev->dev_private;
4939 u32 hw_max, hw_min;
4940 int ret;
4941
4942 if (INTEL_INFO(dev)->gen < 6)
4943 return -ENODEV;
4944
4945 flush_delayed_work(&dev_priv->rps.delayed_resume_work);
4946
4947 DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
4948
4949 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
4950 if (ret)
4951 return ret;
4952
4953 /*
4954 * Turbo will still be enabled, but won't go above the set value.
4955 */
4956 val = intel_freq_opcode(dev_priv, val);
4957
4958 hw_max = dev_priv->rps.max_freq;
4959 hw_min = dev_priv->rps.min_freq;
4960
4961 if (val < hw_min || val > hw_max || val < dev_priv->rps.min_freq_softlimit) {
4962 mutex_unlock(&dev_priv->rps.hw_lock);
4963 return -EINVAL;
4964 }
4965
4966 dev_priv->rps.max_freq_softlimit = val;
4967
4968 intel_set_rps(dev, val);
4969
4970 mutex_unlock(&dev_priv->rps.hw_lock);
4971
4972 return 0;
4973 }
4974
4975 DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
4976 i915_max_freq_get, i915_max_freq_set,
4977 "%llu\n");
4978
4979 static int
4980 i915_min_freq_get(void *data, u64 *val)
4981 {
4982 struct drm_device *dev = data;
4983 struct drm_i915_private *dev_priv = dev->dev_private;
4984 int ret;
4985
4986 if (INTEL_INFO(dev)->gen < 6)
4987 return -ENODEV;
4988
4989 flush_delayed_work(&dev_priv->rps.delayed_resume_work);
4990
4991 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
4992 if (ret)
4993 return ret;
4994
4995 *val = intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit);
4996 mutex_unlock(&dev_priv->rps.hw_lock);
4997
4998 return 0;
4999 }
5000
5001 static int
5002 i915_min_freq_set(void *data, u64 val)
5003 {
5004 struct drm_device *dev = data;
5005 struct drm_i915_private *dev_priv = dev->dev_private;
5006 u32 hw_max, hw_min;
5007 int ret;
5008
5009 if (INTEL_INFO(dev)->gen < 6)
5010 return -ENODEV;
5011
5012 flush_delayed_work(&dev_priv->rps.delayed_resume_work);
5013
5014 DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
5015
5016 ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
5017 if (ret)
5018 return ret;
5019
5020 /*
5021 * Turbo will still be enabled, but won't go below the set value.
5022 */
5023 val = intel_freq_opcode(dev_priv, val);
5024
5025 hw_max = dev_priv->rps.max_freq;
5026 hw_min = dev_priv->rps.min_freq;
5027
5028 if (val < hw_min || val > hw_max || val > dev_priv->rps.max_freq_softlimit) {
5029 mutex_unlock(&dev_priv->rps.hw_lock);
5030 return -EINVAL;
5031 }
5032
5033 dev_priv->rps.min_freq_softlimit = val;
5034
5035 intel_set_rps(dev, val);
5036
5037 mutex_unlock(&dev_priv->rps.hw_lock);
5038
5039 return 0;
5040 }
5041
5042 DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
5043 i915_min_freq_get, i915_min_freq_set,
5044 "%llu\n");
5045
5046 static int
5047 i915_cache_sharing_get(void *data, u64 *val)
5048 {
5049 struct drm_device *dev = data;
5050 struct drm_i915_private *dev_priv = dev->dev_private;
5051 u32 snpcr;
5052 int ret;
5053
5054 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
5055 return -ENODEV;
5056
5057 ret = mutex_lock_interruptible(&dev->struct_mutex);
5058 if (ret)
5059 return ret;
5060 intel_runtime_pm_get(dev_priv);
5061
5062 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
5063
5064 intel_runtime_pm_put(dev_priv);
5065 mutex_unlock(&dev_priv->dev->struct_mutex);
5066
5067 *val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT;
5068
5069 return 0;
5070 }
5071
5072 static int
5073 i915_cache_sharing_set(void *data, u64 val)
5074 {
5075 struct drm_device *dev = data;
5076 struct drm_i915_private *dev_priv = dev->dev_private;
5077 u32 snpcr;
5078
5079 if (!(IS_GEN6(dev) || IS_GEN7(dev)))
5080 return -ENODEV;
5081
5082 if (val > 3)
5083 return -EINVAL;
5084
5085 intel_runtime_pm_get(dev_priv);
5086 DRM_DEBUG_DRIVER("Manually setting uncore sharing to %llu\n", val);
5087
5088 /* Update the cache sharing policy here as well */
5089 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
5090 snpcr &= ~GEN6_MBC_SNPCR_MASK;
5091 snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
5092 I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
5093
5094 intel_runtime_pm_put(dev_priv);
5095 return 0;
5096 }
5097
5098 DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
5099 i915_cache_sharing_get, i915_cache_sharing_set,
5100 "%llu\n");
5101
5102 struct sseu_dev_status {
5103 unsigned int slice_total;
5104 unsigned int subslice_total;
5105 unsigned int subslice_per_slice;
5106 unsigned int eu_total;
5107 unsigned int eu_per_subslice;
5108 };
5109
5110 static void cherryview_sseu_device_status(struct drm_device *dev,
5111 struct sseu_dev_status *stat)
5112 {
5113 struct drm_i915_private *dev_priv = dev->dev_private;
5114 int ss_max = 2;
5115 int ss;
5116 u32 sig1[ss_max], sig2[ss_max];
5117
5118 sig1[0] = I915_READ(CHV_POWER_SS0_SIG1);
5119 sig1[1] = I915_READ(CHV_POWER_SS1_SIG1);
5120 sig2[0] = I915_READ(CHV_POWER_SS0_SIG2);
5121 sig2[1] = I915_READ(CHV_POWER_SS1_SIG2);
5122
5123 for (ss = 0; ss < ss_max; ss++) {
5124 unsigned int eu_cnt;
5125
5126 if (sig1[ss] & CHV_SS_PG_ENABLE)
5127 /* skip disabled subslice */
5128 continue;
5129
5130 stat->slice_total = 1;
5131 stat->subslice_per_slice++;
5132 eu_cnt = ((sig1[ss] & CHV_EU08_PG_ENABLE) ? 0 : 2) +
5133 ((sig1[ss] & CHV_EU19_PG_ENABLE) ? 0 : 2) +
5134 ((sig1[ss] & CHV_EU210_PG_ENABLE) ? 0 : 2) +
5135 ((sig2[ss] & CHV_EU311_PG_ENABLE) ? 0 : 2);
5136 stat->eu_total += eu_cnt;
5137 stat->eu_per_subslice = max(stat->eu_per_subslice, eu_cnt);
5138 }
5139 stat->subslice_total = stat->subslice_per_slice;
5140 }
5141
5142 static void gen9_sseu_device_status(struct drm_device *dev,
5143 struct sseu_dev_status *stat)
5144 {
5145 struct drm_i915_private *dev_priv = dev->dev_private;
5146 int s_max = 3, ss_max = 4;
5147 int s, ss;
5148 u32 s_reg[s_max], eu_reg[2*s_max], eu_mask[2];
5149
5150 /* BXT has a single slice and at most 3 subslices. */
5151 if (IS_BROXTON(dev)) {
5152 s_max = 1;
5153 ss_max = 3;
5154 }
5155
5156 for (s = 0; s < s_max; s++) {
5157 s_reg[s] = I915_READ(GEN9_SLICE_PGCTL_ACK(s));
5158 eu_reg[2*s] = I915_READ(GEN9_SS01_EU_PGCTL_ACK(s));
5159 eu_reg[2*s + 1] = I915_READ(GEN9_SS23_EU_PGCTL_ACK(s));
5160 }
5161
5162 eu_mask[0] = GEN9_PGCTL_SSA_EU08_ACK |
5163 GEN9_PGCTL_SSA_EU19_ACK |
5164 GEN9_PGCTL_SSA_EU210_ACK |
5165 GEN9_PGCTL_SSA_EU311_ACK;
5166 eu_mask[1] = GEN9_PGCTL_SSB_EU08_ACK |
5167 GEN9_PGCTL_SSB_EU19_ACK |
5168 GEN9_PGCTL_SSB_EU210_ACK |
5169 GEN9_PGCTL_SSB_EU311_ACK;
5170
5171 for (s = 0; s < s_max; s++) {
5172 unsigned int ss_cnt = 0;
5173
5174 if ((s_reg[s] & GEN9_PGCTL_SLICE_ACK) == 0)
5175 /* skip disabled slice */
5176 continue;
5177
5178 stat->slice_total++;
5179
5180 if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
5181 ss_cnt = INTEL_INFO(dev)->subslice_per_slice;
5182
5183 for (ss = 0; ss < ss_max; ss++) {
5184 unsigned int eu_cnt;
5185
5186 if (IS_BROXTON(dev) &&
5187 !(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
5188 /* skip disabled subslice */
5189 continue;
5190
5191 if (IS_BROXTON(dev))
5192 ss_cnt++;
5193
5194 eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
5195 eu_mask[ss%2]);
5196 stat->eu_total += eu_cnt;
5197 stat->eu_per_subslice = max(stat->eu_per_subslice,
5198 eu_cnt);
5199 }
5200
5201 stat->subslice_total += ss_cnt;
5202 stat->subslice_per_slice = max(stat->subslice_per_slice,
5203 ss_cnt);
5204 }
5205 }
5206
5207 static void broadwell_sseu_device_status(struct drm_device *dev,
5208 struct sseu_dev_status *stat)
5209 {
5210 struct drm_i915_private *dev_priv = dev->dev_private;
5211 int s;
5212 u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
5213
5214 stat->slice_total = hweight32(slice_info & GEN8_LSLICESTAT_MASK);
5215
5216 if (stat->slice_total) {
5217 stat->subslice_per_slice = INTEL_INFO(dev)->subslice_per_slice;
5218 stat->subslice_total = stat->slice_total *
5219 stat->subslice_per_slice;
5220 stat->eu_per_subslice = INTEL_INFO(dev)->eu_per_subslice;
5221 stat->eu_total = stat->eu_per_subslice * stat->subslice_total;
5222
5223 /* subtract fused off EU(s) from enabled slice(s) */
5224 for (s = 0; s < stat->slice_total; s++) {
5225 u8 subslice_7eu = INTEL_INFO(dev)->subslice_7eu[s];
5226
5227 stat->eu_total -= hweight8(subslice_7eu);
5228 }
5229 }
5230 }
5231
5232 static int i915_sseu_status(struct seq_file *m, void *unused)
5233 {
5234 struct drm_info_node *node = (struct drm_info_node *) m->private;
5235 struct drm_device *dev = node->minor->dev;
5236 struct sseu_dev_status stat;
5237
5238 if (INTEL_INFO(dev)->gen < 8)
5239 return -ENODEV;
5240
5241 seq_puts(m, "SSEU Device Info\n");
5242 seq_printf(m, " Available Slice Total: %u\n",
5243 INTEL_INFO(dev)->slice_total);
5244 seq_printf(m, " Available Subslice Total: %u\n",
5245 INTEL_INFO(dev)->subslice_total);
5246 seq_printf(m, " Available Subslice Per Slice: %u\n",
5247 INTEL_INFO(dev)->subslice_per_slice);
5248 seq_printf(m, " Available EU Total: %u\n",
5249 INTEL_INFO(dev)->eu_total);
5250 seq_printf(m, " Available EU Per Subslice: %u\n",
5251 INTEL_INFO(dev)->eu_per_subslice);
5252 seq_printf(m, " Has Slice Power Gating: %s\n",
5253 yesno(INTEL_INFO(dev)->has_slice_pg));
5254 seq_printf(m, " Has Subslice Power Gating: %s\n",
5255 yesno(INTEL_INFO(dev)->has_subslice_pg));
5256 seq_printf(m, " Has EU Power Gating: %s\n",
5257 yesno(INTEL_INFO(dev)->has_eu_pg));
5258
5259 seq_puts(m, "SSEU Device Status\n");
5260 memset(&stat, 0, sizeof(stat));
5261 if (IS_CHERRYVIEW(dev)) {
5262 cherryview_sseu_device_status(dev, &stat);
5263 } else if (IS_BROADWELL(dev)) {
5264 broadwell_sseu_device_status(dev, &stat);
5265 } else if (INTEL_INFO(dev)->gen >= 9) {
5266 gen9_sseu_device_status(dev, &stat);
5267 }
5268 seq_printf(m, " Enabled Slice Total: %u\n",
5269 stat.slice_total);
5270 seq_printf(m, " Enabled Subslice Total: %u\n",
5271 stat.subslice_total);
5272 seq_printf(m, " Enabled Subslice Per Slice: %u\n",
5273 stat.subslice_per_slice);
5274 seq_printf(m, " Enabled EU Total: %u\n",
5275 stat.eu_total);
5276 seq_printf(m, " Enabled EU Per Subslice: %u\n",
5277 stat.eu_per_subslice);
5278
5279 return 0;
5280 }
5281
5282 static int i915_forcewake_open(struct inode *inode, struct file *file)
5283 {
5284 struct drm_device *dev = inode->i_private;
5285 struct drm_i915_private *dev_priv = dev->dev_private;
5286
5287 if (INTEL_INFO(dev)->gen < 6)
5288 return 0;
5289
5290 intel_runtime_pm_get(dev_priv);
5291 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
5292
5293 return 0;
5294 }
5295
5296 static int i915_forcewake_release(struct inode *inode, struct file *file)
5297 {
5298 struct drm_device *dev = inode->i_private;
5299 struct drm_i915_private *dev_priv = dev->dev_private;
5300
5301 if (INTEL_INFO(dev)->gen < 6)
5302 return 0;
5303
5304 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
5305 intel_runtime_pm_put(dev_priv);
5306
5307 return 0;
5308 }
5309
5310 static const struct file_operations i915_forcewake_fops = {
5311 .owner = THIS_MODULE,
5312 .open = i915_forcewake_open,
5313 .release = i915_forcewake_release,
5314 };
5315
5316 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
5317 {
5318 struct drm_device *dev = minor->dev;
5319 struct dentry *ent;
5320
5321 ent = debugfs_create_file("i915_forcewake_user",
5322 S_IRUSR,
5323 root, dev,
5324 &i915_forcewake_fops);
5325 if (!ent)
5326 return -ENOMEM;
5327
5328 return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
5329 }
5330
5331 static int i915_debugfs_create(struct dentry *root,
5332 struct drm_minor *minor,
5333 const char *name,
5334 const struct file_operations *fops)
5335 {
5336 struct drm_device *dev = minor->dev;
5337 struct dentry *ent;
5338
5339 ent = debugfs_create_file(name,
5340 S_IRUGO | S_IWUSR,
5341 root, dev,
5342 fops);
5343 if (!ent)
5344 return -ENOMEM;
5345
5346 return drm_add_fake_info_node(minor, ent, fops);
5347 }
5348
5349 static const struct drm_info_list i915_debugfs_list[] = {
5350 {"i915_capabilities", i915_capabilities, 0},
5351 {"i915_gem_objects", i915_gem_object_info, 0},
5352 {"i915_gem_gtt", i915_gem_gtt_info, 0},
5353 {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
5354 {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
5355 {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
5356 {"i915_gem_stolen", i915_gem_stolen_list_info },
5357 {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
5358 {"i915_gem_request", i915_gem_request_info, 0},
5359 {"i915_gem_seqno", i915_gem_seqno_info, 0},
5360 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
5361 {"i915_gem_interrupt", i915_interrupt_info, 0},
5362 {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
5363 {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
5364 {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
5365 {"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
5366 {"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},
5367 {"i915_guc_info", i915_guc_info, 0},
5368 {"i915_guc_load_status", i915_guc_load_status_info, 0},
5369 {"i915_guc_log_dump", i915_guc_log_dump, 0},
5370 {"i915_frequency_info", i915_frequency_info, 0},
5371 {"i915_hangcheck_info", i915_hangcheck_info, 0},
5372 {"i915_drpc_info", i915_drpc_info, 0},
5373 {"i915_emon_status", i915_emon_status, 0},
5374 {"i915_ring_freq_table", i915_ring_freq_table, 0},
5375 {"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0},
5376 {"i915_fbc_status", i915_fbc_status, 0},
5377 {"i915_ips_status", i915_ips_status, 0},
5378 {"i915_sr_status", i915_sr_status, 0},
5379 {"i915_opregion", i915_opregion, 0},
5380 {"i915_vbt", i915_vbt, 0},
5381 {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
5382 {"i915_context_status", i915_context_status, 0},
5383 {"i915_dump_lrc", i915_dump_lrc, 0},
5384 {"i915_execlists", i915_execlists, 0},
5385 {"i915_forcewake_domains", i915_forcewake_domains, 0},
5386 {"i915_swizzle_info", i915_swizzle_info, 0},
5387 {"i915_ppgtt_info", i915_ppgtt_info, 0},
5388 {"i915_llc", i915_llc, 0},
5389 {"i915_edp_psr_status", i915_edp_psr_status, 0},
5390 {"i915_sink_crc_eDP1", i915_sink_crc, 0},
5391 {"i915_energy_uJ", i915_energy_uJ, 0},
5392 {"i915_runtime_pm_status", i915_runtime_pm_status, 0},
5393 {"i915_power_domain_info", i915_power_domain_info, 0},
5394 {"i915_dmc_info", i915_dmc_info, 0},
5395 {"i915_display_info", i915_display_info, 0},
5396 {"i915_semaphore_status", i915_semaphore_status, 0},
5397 {"i915_shared_dplls_info", i915_shared_dplls_info, 0},
5398 {"i915_dp_mst_info", i915_dp_mst_info, 0},
5399 {"i915_wa_registers", i915_wa_registers, 0},
5400 {"i915_ddb_info", i915_ddb_info, 0},
5401 {"i915_sseu_status", i915_sseu_status, 0},
5402 {"i915_drrs_status", i915_drrs_status, 0},
5403 {"i915_rps_boost_info", i915_rps_boost_info, 0},
5404 };
5405 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
5406
5407 static const struct i915_debugfs_files {
5408 const char *name;
5409 const struct file_operations *fops;
5410 } i915_debugfs_files[] = {
5411 {"i915_wedged", &i915_wedged_fops},
5412 {"i915_max_freq", &i915_max_freq_fops},
5413 {"i915_min_freq", &i915_min_freq_fops},
5414 {"i915_cache_sharing", &i915_cache_sharing_fops},
5415 {"i915_ring_stop", &i915_ring_stop_fops},
5416 {"i915_ring_missed_irq", &i915_ring_missed_irq_fops},
5417 {"i915_ring_test_irq", &i915_ring_test_irq_fops},
5418 {"i915_gem_drop_caches", &i915_drop_caches_fops},
5419 {"i915_error_state", &i915_error_state_fops},
5420 {"i915_next_seqno", &i915_next_seqno_fops},
5421 {"i915_display_crc_ctl", &i915_display_crc_ctl_fops},
5422 {"i915_pri_wm_latency", &i915_pri_wm_latency_fops},
5423 {"i915_spr_wm_latency", &i915_spr_wm_latency_fops},
5424 {"i915_cur_wm_latency", &i915_cur_wm_latency_fops},
5425 {"i915_fbc_false_color", &i915_fbc_fc_fops},
5426 {"i915_dp_test_data", &i915_displayport_test_data_fops},
5427 {"i915_dp_test_type", &i915_displayport_test_type_fops},
5428 {"i915_dp_test_active", &i915_displayport_test_active_fops}
5429 };
5430
5431 void intel_display_crc_init(struct drm_device *dev)
5432 {
5433 struct drm_i915_private *dev_priv = dev->dev_private;
5434 enum pipe pipe;
5435
5436 for_each_pipe(dev_priv, pipe) {
5437 struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
5438
5439 pipe_crc->opened = false;
5440 spin_lock_init(&pipe_crc->lock);
5441 init_waitqueue_head(&pipe_crc->wq);
5442 }
5443 }
5444
5445 int i915_debugfs_init(struct drm_minor *minor)
5446 {
5447 int ret, i;
5448
5449 ret = i915_forcewake_create(minor->debugfs_root, minor);
5450 if (ret)
5451 return ret;
5452
5453 for (i = 0; i < ARRAY_SIZE(i915_pipe_crc_data); i++) {
5454 ret = i915_pipe_crc_create(minor->debugfs_root, minor, i);
5455 if (ret)
5456 return ret;
5457 }
5458
5459 for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
5460 ret = i915_debugfs_create(minor->debugfs_root, minor,
5461 i915_debugfs_files[i].name,
5462 i915_debugfs_files[i].fops);
5463 if (ret)
5464 return ret;
5465 }
5466
5467 return drm_debugfs_create_files(i915_debugfs_list,
5468 I915_DEBUGFS_ENTRIES,
5469 minor->debugfs_root, minor);
5470 }
5471
5472 void i915_debugfs_cleanup(struct drm_minor *minor)
5473 {
5474 int i;
5475
5476 drm_debugfs_remove_files(i915_debugfs_list,
5477 I915_DEBUGFS_ENTRIES, minor);
5478
5479 drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
5480 1, minor);
5481
5482 for (i = 0; i < ARRAY_SIZE(i915_pipe_crc_data); i++) {
5483 struct drm_info_list *info_list =
5484 (struct drm_info_list *)&i915_pipe_crc_data[i];
5485
5486 drm_debugfs_remove_files(info_list, 1, minor);
5487 }
5488
5489 for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
5490 struct drm_info_list *info_list =
5491 (struct drm_info_list *) i915_debugfs_files[i].fops;
5492
5493 drm_debugfs_remove_files(info_list, 1, minor);
5494 }
5495 }
5496
5497 struct dpcd_block {
5498 /* DPCD dump start address. */
5499 unsigned int offset;
5500 /* DPCD dump end address, inclusive. If unset, .size will be used. */
5501 unsigned int end;
5502 /* DPCD dump size. Used if .end is unset. If unset, defaults to 1. */
5503 size_t size;
5504 /* Only valid for eDP. */
5505 bool edp;
5506 };
5507
5508 static const struct dpcd_block i915_dpcd_debug[] = {
5509 { .offset = DP_DPCD_REV, .size = DP_RECEIVER_CAP_SIZE },
5510 { .offset = DP_PSR_SUPPORT, .end = DP_PSR_CAPS },
5511 { .offset = DP_DOWNSTREAM_PORT_0, .size = 16 },
5512 { .offset = DP_LINK_BW_SET, .end = DP_EDP_CONFIGURATION_SET },
5513 { .offset = DP_SINK_COUNT, .end = DP_ADJUST_REQUEST_LANE2_3 },
5514 { .offset = DP_SET_POWER },
5515 { .offset = DP_EDP_DPCD_REV },
5516 { .offset = DP_EDP_GENERAL_CAP_1, .end = DP_EDP_GENERAL_CAP_3 },
5517 { .offset = DP_EDP_DISPLAY_CONTROL_REGISTER, .end = DP_EDP_BACKLIGHT_FREQ_CAP_MAX_LSB },
5518 { .offset = DP_EDP_DBC_MINIMUM_BRIGHTNESS_SET, .end = DP_EDP_DBC_MAXIMUM_BRIGHTNESS_SET },
5519 };
5520
5521 static int i915_dpcd_show(struct seq_file *m, void *data)
5522 {
5523 struct drm_connector *connector = m->private;
5524 struct intel_dp *intel_dp =
5525 enc_to_intel_dp(&intel_attached_encoder(connector)->base);
5526 uint8_t buf[16];
5527 ssize_t err;
5528 int i;
5529
5530 if (connector->status != connector_status_connected)
5531 return -ENODEV;
5532
5533 for (i = 0; i < ARRAY_SIZE(i915_dpcd_debug); i++) {
5534 const struct dpcd_block *b = &i915_dpcd_debug[i];
5535 size_t size = b->end ? b->end - b->offset + 1 : (b->size ?: 1);
5536
5537 if (b->edp &&
5538 connector->connector_type != DRM_MODE_CONNECTOR_eDP)
5539 continue;
5540
5541 /* low tech for now */
5542 if (WARN_ON(size > sizeof(buf)))
5543 continue;
5544
5545 err = drm_dp_dpcd_read(&intel_dp->aux, b->offset, buf, size);
5546 if (err <= 0) {
5547 DRM_ERROR("dpcd read (%zu bytes at %u) failed (%zd)\n",
5548 size, b->offset, err);
5549 continue;
5550 }
5551
5552 seq_printf(m, "%04x: %*ph\n", b->offset, (int) size, buf);
5553 }
5554
5555 return 0;
5556 }
5557
5558 static int i915_dpcd_open(struct inode *inode, struct file *file)
5559 {
5560 return single_open(file, i915_dpcd_show, inode->i_private);
5561 }
5562
5563 static const struct file_operations i915_dpcd_fops = {
5564 .owner = THIS_MODULE,
5565 .open = i915_dpcd_open,
5566 .read = seq_read,
5567 .llseek = seq_lseek,
5568 .release = single_release,
5569 };
5570
5571 /**
5572 * i915_debugfs_connector_add - add i915 specific connector debugfs files
5573 * @connector: pointer to a registered drm_connector
5574 *
5575 * Cleanup will be done by drm_connector_unregister() through a call to
5576 * drm_debugfs_connector_remove().
5577 *
5578 * Returns 0 on success, negative error codes on error.
5579 */
5580 int i915_debugfs_connector_add(struct drm_connector *connector)
5581 {
5582 struct dentry *root = connector->debugfs_entry;
5583
5584 /* The connector must have been registered beforehands. */
5585 if (!root)
5586 return -ENODEV;
5587
5588 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
5589 connector->connector_type == DRM_MODE_CONNECTOR_eDP)
5590 debugfs_create_file("i915_dpcd", S_IRUGO, root, connector,
5591 &i915_dpcd_fops);
5592
5593 return 0;
5594 }
Linux kernel - Deliverables
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