2 * Copyright © 2008 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
25 * Keith Packard <keithp@keithp.com>
29 #include <linux/sched/mm.h>
30 #include <linux/sort.h>
32 #include <drm/drm_debugfs.h>
34 #include "gem/i915_gem_context.h"
35 #include "gt/intel_gt_buffer_pool.h"
36 #include "gt/intel_gt_clock_utils.h"
37 #include "gt/intel_gt.h"
38 #include "gt/intel_gt_pm.h"
39 #include "gt/intel_gt_requests.h"
40 #include "gt/intel_reset.h"
41 #include "gt/intel_rc6.h"
42 #include "gt/intel_rps.h"
43 #include "gt/intel_sseu_debugfs.h"
45 #include "i915_debugfs.h"
46 #include "i915_debugfs_params.h"
48 #include "i915_trace.h"
50 #include "intel_sideband.h"
52 static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
54 return to_i915(node->minor->dev);
57 static int i915_capabilities(struct seq_file *m, void *data)
59 struct drm_i915_private *i915 = node_to_i915(m->private);
60 struct drm_printer p = drm_seq_file_printer(m);
62 seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(i915));
64 intel_device_info_print_static(INTEL_INFO(i915), &p);
65 intel_device_info_print_runtime(RUNTIME_INFO(i915), &p);
66 intel_gt_info_print(&i915->gt.info, &p);
67 intel_driver_caps_print(&i915->caps, &p);
69 kernel_param_lock(THIS_MODULE);
70 i915_params_dump(&i915->params, &p);
71 kernel_param_unlock(THIS_MODULE);
76 static char get_tiling_flag(struct drm_i915_gem_object *obj)
78 switch (i915_gem_object_get_tiling(obj)) {
80 case I915_TILING_NONE: return ' ';
81 case I915_TILING_X: return 'X';
82 case I915_TILING_Y: return 'Y';
86 static char get_global_flag(struct drm_i915_gem_object *obj)
88 return READ_ONCE(obj->userfault_count) ? 'g' : ' ';
91 static char get_pin_mapped_flag(struct drm_i915_gem_object *obj)
93 return obj->mm.mapping ? 'M' : ' ';
97 stringify_page_sizes(unsigned int page_sizes, char *buf, size_t len)
101 switch (page_sizes) {
104 case I915_GTT_PAGE_SIZE_4K:
106 case I915_GTT_PAGE_SIZE_64K:
108 case I915_GTT_PAGE_SIZE_2M:
114 if (page_sizes & I915_GTT_PAGE_SIZE_2M)
115 x += snprintf(buf + x, len - x, "2M, ");
116 if (page_sizes & I915_GTT_PAGE_SIZE_64K)
117 x += snprintf(buf + x, len - x, "64K, ");
118 if (page_sizes & I915_GTT_PAGE_SIZE_4K)
119 x += snprintf(buf + x, len - x, "4K, ");
127 i915_debugfs_describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
129 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
130 struct intel_engine_cs *engine;
131 struct i915_vma *vma;
134 seq_printf(m, "%pK: %c%c%c %8zdKiB %02x %02x %s%s%s",
136 get_tiling_flag(obj),
137 get_global_flag(obj),
138 get_pin_mapped_flag(obj),
139 obj->base.size / 1024,
142 i915_cache_level_str(dev_priv, obj->cache_level),
143 obj->mm.dirty ? " dirty" : "",
144 obj->mm.madv == I915_MADV_DONTNEED ? " purgeable" : "");
146 seq_printf(m, " (name: %d)", obj->base.name);
148 spin_lock(&obj->vma.lock);
149 list_for_each_entry(vma, &obj->vma.list, obj_link) {
150 if (!drm_mm_node_allocated(&vma->node))
153 spin_unlock(&obj->vma.lock);
155 if (i915_vma_is_pinned(vma))
158 seq_printf(m, " (%sgtt offset: %08llx, size: %08llx, pages: %s",
159 i915_vma_is_ggtt(vma) ? "g" : "pp",
160 vma->node.start, vma->node.size,
161 stringify_page_sizes(vma->page_sizes.gtt, NULL, 0));
162 if (i915_vma_is_ggtt(vma)) {
163 switch (vma->ggtt_view.type) {
164 case I915_GGTT_VIEW_NORMAL:
165 seq_puts(m, ", normal");
168 case I915_GGTT_VIEW_PARTIAL:
169 seq_printf(m, ", partial [%08llx+%x]",
170 vma->ggtt_view.partial.offset << PAGE_SHIFT,
171 vma->ggtt_view.partial.size << PAGE_SHIFT);
174 case I915_GGTT_VIEW_ROTATED:
175 seq_printf(m, ", rotated [(%ux%u, stride=%u, offset=%u), (%ux%u, stride=%u, offset=%u)]",
176 vma->ggtt_view.rotated.plane[0].width,
177 vma->ggtt_view.rotated.plane[0].height,
178 vma->ggtt_view.rotated.plane[0].stride,
179 vma->ggtt_view.rotated.plane[0].offset,
180 vma->ggtt_view.rotated.plane[1].width,
181 vma->ggtt_view.rotated.plane[1].height,
182 vma->ggtt_view.rotated.plane[1].stride,
183 vma->ggtt_view.rotated.plane[1].offset);
186 case I915_GGTT_VIEW_REMAPPED:
187 seq_printf(m, ", remapped [(%ux%u, stride=%u, offset=%u), (%ux%u, stride=%u, offset=%u)]",
188 vma->ggtt_view.remapped.plane[0].width,
189 vma->ggtt_view.remapped.plane[0].height,
190 vma->ggtt_view.remapped.plane[0].stride,
191 vma->ggtt_view.remapped.plane[0].offset,
192 vma->ggtt_view.remapped.plane[1].width,
193 vma->ggtt_view.remapped.plane[1].height,
194 vma->ggtt_view.remapped.plane[1].stride,
195 vma->ggtt_view.remapped.plane[1].offset);
199 MISSING_CASE(vma->ggtt_view.type);
204 seq_printf(m, " , fence: %d", vma->fence->id);
207 spin_lock(&obj->vma.lock);
209 spin_unlock(&obj->vma.lock);
211 seq_printf(m, " (pinned x %d)", pin_count);
213 seq_printf(m, " (stolen: %08llx)", obj->stolen->start);
214 if (i915_gem_object_is_framebuffer(obj))
215 seq_printf(m, " (fb)");
217 engine = i915_gem_object_last_write_engine(obj);
219 seq_printf(m, " (%s)", engine->name);
223 struct i915_address_space *vm;
226 u64 active, inactive;
230 static int per_file_stats(int id, void *ptr, void *data)
232 struct drm_i915_gem_object *obj = ptr;
233 struct file_stats *stats = data;
234 struct i915_vma *vma;
236 if (IS_ERR_OR_NULL(obj) || !kref_get_unless_zero(&obj->base.refcount))
240 stats->total += obj->base.size;
242 spin_lock(&obj->vma.lock);
244 for_each_ggtt_vma(vma, obj) {
245 if (!drm_mm_node_allocated(&vma->node))
248 if (i915_vma_is_active(vma))
249 stats->active += vma->node.size;
251 stats->inactive += vma->node.size;
253 if (i915_vma_is_closed(vma))
254 stats->closed += vma->node.size;
257 struct rb_node *p = obj->vma.tree.rb_node;
262 vma = rb_entry(p, typeof(*vma), obj_node);
263 cmp = i915_vma_compare(vma, stats->vm, NULL);
265 if (drm_mm_node_allocated(&vma->node)) {
266 if (i915_vma_is_active(vma))
267 stats->active += vma->node.size;
269 stats->inactive += vma->node.size;
271 if (i915_vma_is_closed(vma))
272 stats->closed += vma->node.size;
282 spin_unlock(&obj->vma.lock);
284 i915_gem_object_put(obj);
288 #define print_file_stats(m, name, stats) do { \
290 seq_printf(m, "%s: %lu objects, %llu bytes (%llu active, %llu inactive, %llu closed)\n", \
299 static void print_context_stats(struct seq_file *m,
300 struct drm_i915_private *i915)
302 struct file_stats kstats = {};
303 struct i915_gem_context *ctx, *cn;
305 spin_lock(&i915->gem.contexts.lock);
306 list_for_each_entry_safe(ctx, cn, &i915->gem.contexts.list, link) {
307 struct i915_gem_engines_iter it;
308 struct intel_context *ce;
310 if (!kref_get_unless_zero(&ctx->ref))
313 spin_unlock(&i915->gem.contexts.lock);
315 for_each_gem_engine(ce,
316 i915_gem_context_lock_engines(ctx), it) {
317 if (intel_context_pin_if_active(ce)) {
321 ce->state->obj, &kstats);
322 per_file_stats(0, ce->ring->vma->obj, &kstats);
324 intel_context_unpin(ce);
327 i915_gem_context_unlock_engines(ctx);
329 mutex_lock(&ctx->mutex);
330 if (!IS_ERR_OR_NULL(ctx->file_priv)) {
331 struct file_stats stats = {
332 .vm = rcu_access_pointer(ctx->vm),
334 struct drm_file *file = ctx->file_priv->file;
335 struct task_struct *task;
339 idr_for_each(&file->object_idr, per_file_stats, &stats);
343 task = pid_task(ctx->pid ?: file->pid, PIDTYPE_PID);
344 snprintf(name, sizeof(name), "%s",
345 task ? task->comm : "<unknown>");
348 print_file_stats(m, name, stats);
350 mutex_unlock(&ctx->mutex);
352 spin_lock(&i915->gem.contexts.lock);
353 list_safe_reset_next(ctx, cn, link);
354 i915_gem_context_put(ctx);
356 spin_unlock(&i915->gem.contexts.lock);
358 print_file_stats(m, "[k]contexts", kstats);
361 static int i915_gem_object_info(struct seq_file *m, void *data)
363 struct drm_i915_private *i915 = node_to_i915(m->private);
364 struct intel_memory_region *mr;
365 enum intel_region_id id;
367 seq_printf(m, "%u shrinkable [%u free] objects, %llu bytes\n",
368 i915->mm.shrink_count,
369 atomic_read(&i915->mm.free_count),
370 i915->mm.shrink_memory);
371 for_each_memory_region(mr, i915, id)
372 seq_printf(m, "%s: total:%pa, available:%pa bytes\n",
373 mr->name, &mr->total, &mr->avail);
376 print_context_stats(m, i915);
381 static void gen8_display_interrupt_info(struct seq_file *m)
383 struct drm_i915_private *dev_priv = node_to_i915(m->private);
386 for_each_pipe(dev_priv, pipe) {
387 enum intel_display_power_domain power_domain;
388 intel_wakeref_t wakeref;
390 power_domain = POWER_DOMAIN_PIPE(pipe);
391 wakeref = intel_display_power_get_if_enabled(dev_priv,
394 seq_printf(m, "Pipe %c power disabled\n",
398 seq_printf(m, "Pipe %c IMR:\t%08x\n",
400 I915_READ(GEN8_DE_PIPE_IMR(pipe)));
401 seq_printf(m, "Pipe %c IIR:\t%08x\n",
403 I915_READ(GEN8_DE_PIPE_IIR(pipe)));
404 seq_printf(m, "Pipe %c IER:\t%08x\n",
406 I915_READ(GEN8_DE_PIPE_IER(pipe)));
408 intel_display_power_put(dev_priv, power_domain, wakeref);
411 seq_printf(m, "Display Engine port interrupt mask:\t%08x\n",
412 I915_READ(GEN8_DE_PORT_IMR));
413 seq_printf(m, "Display Engine port interrupt identity:\t%08x\n",
414 I915_READ(GEN8_DE_PORT_IIR));
415 seq_printf(m, "Display Engine port interrupt enable:\t%08x\n",
416 I915_READ(GEN8_DE_PORT_IER));
418 seq_printf(m, "Display Engine misc interrupt mask:\t%08x\n",
419 I915_READ(GEN8_DE_MISC_IMR));
420 seq_printf(m, "Display Engine misc interrupt identity:\t%08x\n",
421 I915_READ(GEN8_DE_MISC_IIR));
422 seq_printf(m, "Display Engine misc interrupt enable:\t%08x\n",
423 I915_READ(GEN8_DE_MISC_IER));
425 seq_printf(m, "PCU interrupt mask:\t%08x\n",
426 I915_READ(GEN8_PCU_IMR));
427 seq_printf(m, "PCU interrupt identity:\t%08x\n",
428 I915_READ(GEN8_PCU_IIR));
429 seq_printf(m, "PCU interrupt enable:\t%08x\n",
430 I915_READ(GEN8_PCU_IER));
433 static int i915_interrupt_info(struct seq_file *m, void *data)
435 struct drm_i915_private *dev_priv = node_to_i915(m->private);
436 struct intel_engine_cs *engine;
437 intel_wakeref_t wakeref;
440 wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
442 if (IS_CHERRYVIEW(dev_priv)) {
443 intel_wakeref_t pref;
445 seq_printf(m, "Master Interrupt Control:\t%08x\n",
446 I915_READ(GEN8_MASTER_IRQ));
448 seq_printf(m, "Display IER:\t%08x\n",
450 seq_printf(m, "Display IIR:\t%08x\n",
452 seq_printf(m, "Display IIR_RW:\t%08x\n",
453 I915_READ(VLV_IIR_RW));
454 seq_printf(m, "Display IMR:\t%08x\n",
456 for_each_pipe(dev_priv, pipe) {
457 enum intel_display_power_domain power_domain;
459 power_domain = POWER_DOMAIN_PIPE(pipe);
460 pref = intel_display_power_get_if_enabled(dev_priv,
463 seq_printf(m, "Pipe %c power disabled\n",
468 seq_printf(m, "Pipe %c stat:\t%08x\n",
470 I915_READ(PIPESTAT(pipe)));
472 intel_display_power_put(dev_priv, power_domain, pref);
475 pref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
476 seq_printf(m, "Port hotplug:\t%08x\n",
477 I915_READ(PORT_HOTPLUG_EN));
478 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
479 I915_READ(VLV_DPFLIPSTAT));
480 seq_printf(m, "DPINVGTT:\t%08x\n",
481 I915_READ(DPINVGTT));
482 intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, pref);
484 for (i = 0; i < 4; i++) {
485 seq_printf(m, "GT Interrupt IMR %d:\t%08x\n",
486 i, I915_READ(GEN8_GT_IMR(i)));
487 seq_printf(m, "GT Interrupt IIR %d:\t%08x\n",
488 i, I915_READ(GEN8_GT_IIR(i)));
489 seq_printf(m, "GT Interrupt IER %d:\t%08x\n",
490 i, I915_READ(GEN8_GT_IER(i)));
493 seq_printf(m, "PCU interrupt mask:\t%08x\n",
494 I915_READ(GEN8_PCU_IMR));
495 seq_printf(m, "PCU interrupt identity:\t%08x\n",
496 I915_READ(GEN8_PCU_IIR));
497 seq_printf(m, "PCU interrupt enable:\t%08x\n",
498 I915_READ(GEN8_PCU_IER));
499 } else if (INTEL_GEN(dev_priv) >= 11) {
500 if (HAS_MASTER_UNIT_IRQ(dev_priv))
501 seq_printf(m, "Master Unit Interrupt Control: %08x\n",
502 I915_READ(DG1_MSTR_UNIT_INTR));
504 seq_printf(m, "Master Interrupt Control: %08x\n",
505 I915_READ(GEN11_GFX_MSTR_IRQ));
507 seq_printf(m, "Render/Copy Intr Enable: %08x\n",
508 I915_READ(GEN11_RENDER_COPY_INTR_ENABLE));
509 seq_printf(m, "VCS/VECS Intr Enable: %08x\n",
510 I915_READ(GEN11_VCS_VECS_INTR_ENABLE));
511 seq_printf(m, "GUC/SG Intr Enable:\t %08x\n",
512 I915_READ(GEN11_GUC_SG_INTR_ENABLE));
513 seq_printf(m, "GPM/WGBOXPERF Intr Enable: %08x\n",
514 I915_READ(GEN11_GPM_WGBOXPERF_INTR_ENABLE));
515 seq_printf(m, "Crypto Intr Enable:\t %08x\n",
516 I915_READ(GEN11_CRYPTO_RSVD_INTR_ENABLE));
517 seq_printf(m, "GUnit/CSME Intr Enable:\t %08x\n",
518 I915_READ(GEN11_GUNIT_CSME_INTR_ENABLE));
520 seq_printf(m, "Display Interrupt Control:\t%08x\n",
521 I915_READ(GEN11_DISPLAY_INT_CTL));
523 gen8_display_interrupt_info(m);
524 } else if (INTEL_GEN(dev_priv) >= 8) {
525 seq_printf(m, "Master Interrupt Control:\t%08x\n",
526 I915_READ(GEN8_MASTER_IRQ));
528 for (i = 0; i < 4; i++) {
529 seq_printf(m, "GT Interrupt IMR %d:\t%08x\n",
530 i, I915_READ(GEN8_GT_IMR(i)));
531 seq_printf(m, "GT Interrupt IIR %d:\t%08x\n",
532 i, I915_READ(GEN8_GT_IIR(i)));
533 seq_printf(m, "GT Interrupt IER %d:\t%08x\n",
534 i, I915_READ(GEN8_GT_IER(i)));
537 gen8_display_interrupt_info(m);
538 } else if (IS_VALLEYVIEW(dev_priv)) {
539 intel_wakeref_t pref;
541 seq_printf(m, "Display IER:\t%08x\n",
543 seq_printf(m, "Display IIR:\t%08x\n",
545 seq_printf(m, "Display IIR_RW:\t%08x\n",
546 I915_READ(VLV_IIR_RW));
547 seq_printf(m, "Display IMR:\t%08x\n",
549 for_each_pipe(dev_priv, pipe) {
550 enum intel_display_power_domain power_domain;
552 power_domain = POWER_DOMAIN_PIPE(pipe);
553 pref = intel_display_power_get_if_enabled(dev_priv,
556 seq_printf(m, "Pipe %c power disabled\n",
561 seq_printf(m, "Pipe %c stat:\t%08x\n",
563 I915_READ(PIPESTAT(pipe)));
564 intel_display_power_put(dev_priv, power_domain, pref);
567 seq_printf(m, "Master IER:\t%08x\n",
568 I915_READ(VLV_MASTER_IER));
570 seq_printf(m, "Render IER:\t%08x\n",
572 seq_printf(m, "Render IIR:\t%08x\n",
574 seq_printf(m, "Render IMR:\t%08x\n",
577 seq_printf(m, "PM IER:\t\t%08x\n",
578 I915_READ(GEN6_PMIER));
579 seq_printf(m, "PM IIR:\t\t%08x\n",
580 I915_READ(GEN6_PMIIR));
581 seq_printf(m, "PM IMR:\t\t%08x\n",
582 I915_READ(GEN6_PMIMR));
584 pref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
585 seq_printf(m, "Port hotplug:\t%08x\n",
586 I915_READ(PORT_HOTPLUG_EN));
587 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
588 I915_READ(VLV_DPFLIPSTAT));
589 seq_printf(m, "DPINVGTT:\t%08x\n",
590 I915_READ(DPINVGTT));
591 intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, pref);
593 } else if (!HAS_PCH_SPLIT(dev_priv)) {
594 seq_printf(m, "Interrupt enable: %08x\n",
595 I915_READ(GEN2_IER));
596 seq_printf(m, "Interrupt identity: %08x\n",
597 I915_READ(GEN2_IIR));
598 seq_printf(m, "Interrupt mask: %08x\n",
599 I915_READ(GEN2_IMR));
600 for_each_pipe(dev_priv, pipe)
601 seq_printf(m, "Pipe %c stat: %08x\n",
603 I915_READ(PIPESTAT(pipe)));
605 seq_printf(m, "North Display Interrupt enable: %08x\n",
607 seq_printf(m, "North Display Interrupt identity: %08x\n",
609 seq_printf(m, "North Display Interrupt mask: %08x\n",
611 seq_printf(m, "South Display Interrupt enable: %08x\n",
613 seq_printf(m, "South Display Interrupt identity: %08x\n",
615 seq_printf(m, "South Display Interrupt mask: %08x\n",
617 seq_printf(m, "Graphics Interrupt enable: %08x\n",
619 seq_printf(m, "Graphics Interrupt identity: %08x\n",
621 seq_printf(m, "Graphics Interrupt mask: %08x\n",
625 if (INTEL_GEN(dev_priv) >= 11) {
626 seq_printf(m, "RCS Intr Mask:\t %08x\n",
627 I915_READ(GEN11_RCS0_RSVD_INTR_MASK));
628 seq_printf(m, "BCS Intr Mask:\t %08x\n",
629 I915_READ(GEN11_BCS_RSVD_INTR_MASK));
630 seq_printf(m, "VCS0/VCS1 Intr Mask:\t %08x\n",
631 I915_READ(GEN11_VCS0_VCS1_INTR_MASK));
632 seq_printf(m, "VCS2/VCS3 Intr Mask:\t %08x\n",
633 I915_READ(GEN11_VCS2_VCS3_INTR_MASK));
634 seq_printf(m, "VECS0/VECS1 Intr Mask:\t %08x\n",
635 I915_READ(GEN11_VECS0_VECS1_INTR_MASK));
636 seq_printf(m, "GUC/SG Intr Mask:\t %08x\n",
637 I915_READ(GEN11_GUC_SG_INTR_MASK));
638 seq_printf(m, "GPM/WGBOXPERF Intr Mask: %08x\n",
639 I915_READ(GEN11_GPM_WGBOXPERF_INTR_MASK));
640 seq_printf(m, "Crypto Intr Mask:\t %08x\n",
641 I915_READ(GEN11_CRYPTO_RSVD_INTR_MASK));
642 seq_printf(m, "Gunit/CSME Intr Mask:\t %08x\n",
643 I915_READ(GEN11_GUNIT_CSME_INTR_MASK));
645 } else if (INTEL_GEN(dev_priv) >= 6) {
646 for_each_uabi_engine(engine, dev_priv) {
648 "Graphics Interrupt mask (%s): %08x\n",
649 engine->name, ENGINE_READ(engine, RING_IMR));
653 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
658 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
660 struct drm_i915_private *i915 = node_to_i915(m->private);
663 seq_printf(m, "Total fences = %d\n", i915->ggtt.num_fences);
666 for (i = 0; i < i915->ggtt.num_fences; i++) {
667 struct i915_fence_reg *reg = &i915->ggtt.fence_regs[i];
668 struct i915_vma *vma = reg->vma;
670 seq_printf(m, "Fence %d, pin count = %d, object = ",
671 i, atomic_read(®->pin_count));
673 seq_puts(m, "unused");
675 i915_debugfs_describe_obj(m, vma->obj);
683 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
684 static ssize_t gpu_state_read(struct file *file, char __user *ubuf,
685 size_t count, loff_t *pos)
687 struct i915_gpu_coredump *error;
691 error = file->private_data;
695 /* Bounce buffer required because of kernfs __user API convenience. */
696 buf = kmalloc(count, GFP_KERNEL);
700 ret = i915_gpu_coredump_copy_to_buffer(error, buf, *pos, count);
704 if (!copy_to_user(ubuf, buf, ret))
714 static int gpu_state_release(struct inode *inode, struct file *file)
716 i915_gpu_coredump_put(file->private_data);
720 static int i915_gpu_info_open(struct inode *inode, struct file *file)
722 struct drm_i915_private *i915 = inode->i_private;
723 struct i915_gpu_coredump *gpu;
724 intel_wakeref_t wakeref;
727 with_intel_runtime_pm(&i915->runtime_pm, wakeref)
728 gpu = i915_gpu_coredump(i915);
732 file->private_data = gpu;
736 static const struct file_operations i915_gpu_info_fops = {
737 .owner = THIS_MODULE,
738 .open = i915_gpu_info_open,
739 .read = gpu_state_read,
740 .llseek = default_llseek,
741 .release = gpu_state_release,
745 i915_error_state_write(struct file *filp,
746 const char __user *ubuf,
750 struct i915_gpu_coredump *error = filp->private_data;
755 drm_dbg(&error->i915->drm, "Resetting error state\n");
756 i915_reset_error_state(error->i915);
761 static int i915_error_state_open(struct inode *inode, struct file *file)
763 struct i915_gpu_coredump *error;
765 error = i915_first_error_state(inode->i_private);
767 return PTR_ERR(error);
769 file->private_data = error;
773 static const struct file_operations i915_error_state_fops = {
774 .owner = THIS_MODULE,
775 .open = i915_error_state_open,
776 .read = gpu_state_read,
777 .write = i915_error_state_write,
778 .llseek = default_llseek,
779 .release = gpu_state_release,
783 static int i915_frequency_info(struct seq_file *m, void *unused)
785 struct drm_i915_private *dev_priv = node_to_i915(m->private);
786 struct intel_uncore *uncore = &dev_priv->uncore;
787 struct intel_rps *rps = &dev_priv->gt.rps;
788 intel_wakeref_t wakeref;
791 wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
793 if (IS_GEN(dev_priv, 5)) {
794 u16 rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
795 u16 rgvstat = intel_uncore_read16(uncore, MEMSTAT_ILK);
797 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
798 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
799 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
801 seq_printf(m, "Current P-state: %d\n",
802 (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
803 } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
804 u32 rpmodectl, freq_sts;
806 rpmodectl = I915_READ(GEN6_RP_CONTROL);
807 seq_printf(m, "Video Turbo Mode: %s\n",
808 yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
809 seq_printf(m, "HW control enabled: %s\n",
810 yesno(rpmodectl & GEN6_RP_ENABLE));
811 seq_printf(m, "SW control enabled: %s\n",
812 yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
813 GEN6_RP_MEDIA_SW_MODE));
815 vlv_punit_get(dev_priv);
816 freq_sts = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
817 vlv_punit_put(dev_priv);
819 seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
820 seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
822 seq_printf(m, "actual GPU freq: %d MHz\n",
823 intel_gpu_freq(rps, (freq_sts >> 8) & 0xff));
825 seq_printf(m, "current GPU freq: %d MHz\n",
826 intel_gpu_freq(rps, rps->cur_freq));
828 seq_printf(m, "max GPU freq: %d MHz\n",
829 intel_gpu_freq(rps, rps->max_freq));
831 seq_printf(m, "min GPU freq: %d MHz\n",
832 intel_gpu_freq(rps, rps->min_freq));
834 seq_printf(m, "idle GPU freq: %d MHz\n",
835 intel_gpu_freq(rps, rps->idle_freq));
838 "efficient (RPe) frequency: %d MHz\n",
839 intel_gpu_freq(rps, rps->efficient_freq));
840 } else if (INTEL_GEN(dev_priv) >= 6) {
844 u32 rpmodectl, rpinclimit, rpdeclimit;
845 u32 rpstat, cagf, reqf;
846 u32 rpupei, rpcurup, rpprevup;
847 u32 rpdownei, rpcurdown, rpprevdown;
848 u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
851 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
852 if (IS_GEN9_LP(dev_priv)) {
853 rp_state_cap = I915_READ(BXT_RP_STATE_CAP);
854 gt_perf_status = I915_READ(BXT_GT_PERF_STATUS);
856 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
857 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
860 /* RPSTAT1 is in the GT power well */
861 intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
863 reqf = I915_READ(GEN6_RPNSWREQ);
864 if (INTEL_GEN(dev_priv) >= 9)
867 reqf &= ~GEN6_TURBO_DISABLE;
868 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
873 reqf = intel_gpu_freq(rps, reqf);
875 rpmodectl = I915_READ(GEN6_RP_CONTROL);
876 rpinclimit = I915_READ(GEN6_RP_UP_THRESHOLD);
877 rpdeclimit = I915_READ(GEN6_RP_DOWN_THRESHOLD);
879 rpstat = I915_READ(GEN6_RPSTAT1);
880 rpupei = I915_READ(GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
881 rpcurup = I915_READ(GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
882 rpprevup = I915_READ(GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
883 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
884 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
885 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
886 cagf = intel_rps_read_actual_frequency(rps);
888 intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
890 if (INTEL_GEN(dev_priv) >= 11) {
891 pm_ier = I915_READ(GEN11_GPM_WGBOXPERF_INTR_ENABLE);
892 pm_imr = I915_READ(GEN11_GPM_WGBOXPERF_INTR_MASK);
894 * The equivalent to the PM ISR & IIR cannot be read
895 * without affecting the current state of the system
899 } else if (INTEL_GEN(dev_priv) >= 8) {
900 pm_ier = I915_READ(GEN8_GT_IER(2));
901 pm_imr = I915_READ(GEN8_GT_IMR(2));
902 pm_isr = I915_READ(GEN8_GT_ISR(2));
903 pm_iir = I915_READ(GEN8_GT_IIR(2));
905 pm_ier = I915_READ(GEN6_PMIER);
906 pm_imr = I915_READ(GEN6_PMIMR);
907 pm_isr = I915_READ(GEN6_PMISR);
908 pm_iir = I915_READ(GEN6_PMIIR);
910 pm_mask = I915_READ(GEN6_PMINTRMSK);
912 seq_printf(m, "Video Turbo Mode: %s\n",
913 yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
914 seq_printf(m, "HW control enabled: %s\n",
915 yesno(rpmodectl & GEN6_RP_ENABLE));
916 seq_printf(m, "SW control enabled: %s\n",
917 yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
918 GEN6_RP_MEDIA_SW_MODE));
920 seq_printf(m, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
921 pm_ier, pm_imr, pm_mask);
922 if (INTEL_GEN(dev_priv) <= 10)
923 seq_printf(m, "PM ISR=0x%08x IIR=0x%08x\n",
925 seq_printf(m, "pm_intrmsk_mbz: 0x%08x\n",
926 rps->pm_intrmsk_mbz);
927 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
928 seq_printf(m, "Render p-state ratio: %d\n",
929 (gt_perf_status & (INTEL_GEN(dev_priv) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
930 seq_printf(m, "Render p-state VID: %d\n",
931 gt_perf_status & 0xff);
932 seq_printf(m, "Render p-state limit: %d\n",
933 rp_state_limits & 0xff);
934 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
935 seq_printf(m, "RPMODECTL: 0x%08x\n", rpmodectl);
936 seq_printf(m, "RPINCLIMIT: 0x%08x\n", rpinclimit);
937 seq_printf(m, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
938 seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
939 seq_printf(m, "CAGF: %dMHz\n", cagf);
940 seq_printf(m, "RP CUR UP EI: %d (%dns)\n",
942 intel_gt_pm_interval_to_ns(&dev_priv->gt, rpupei));
943 seq_printf(m, "RP CUR UP: %d (%dun)\n",
945 intel_gt_pm_interval_to_ns(&dev_priv->gt, rpcurup));
946 seq_printf(m, "RP PREV UP: %d (%dns)\n",
948 intel_gt_pm_interval_to_ns(&dev_priv->gt, rpprevup));
949 seq_printf(m, "Up threshold: %d%%\n",
950 rps->power.up_threshold);
952 seq_printf(m, "RP CUR DOWN EI: %d (%dns)\n",
954 intel_gt_pm_interval_to_ns(&dev_priv->gt,
956 seq_printf(m, "RP CUR DOWN: %d (%dns)\n",
958 intel_gt_pm_interval_to_ns(&dev_priv->gt,
960 seq_printf(m, "RP PREV DOWN: %d (%dns)\n",
962 intel_gt_pm_interval_to_ns(&dev_priv->gt,
964 seq_printf(m, "Down threshold: %d%%\n",
965 rps->power.down_threshold);
967 max_freq = (IS_GEN9_LP(dev_priv) ? rp_state_cap >> 0 :
968 rp_state_cap >> 16) & 0xff;
969 max_freq *= (IS_GEN9_BC(dev_priv) ||
970 INTEL_GEN(dev_priv) >= 10 ? GEN9_FREQ_SCALER : 1);
971 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
972 intel_gpu_freq(rps, max_freq));
974 max_freq = (rp_state_cap & 0xff00) >> 8;
975 max_freq *= (IS_GEN9_BC(dev_priv) ||
976 INTEL_GEN(dev_priv) >= 10 ? GEN9_FREQ_SCALER : 1);
977 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
978 intel_gpu_freq(rps, max_freq));
980 max_freq = (IS_GEN9_LP(dev_priv) ? rp_state_cap >> 16 :
981 rp_state_cap >> 0) & 0xff;
982 max_freq *= (IS_GEN9_BC(dev_priv) ||
983 INTEL_GEN(dev_priv) >= 10 ? GEN9_FREQ_SCALER : 1);
984 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
985 intel_gpu_freq(rps, max_freq));
986 seq_printf(m, "Max overclocked frequency: %dMHz\n",
987 intel_gpu_freq(rps, rps->max_freq));
989 seq_printf(m, "Current freq: %d MHz\n",
990 intel_gpu_freq(rps, rps->cur_freq));
991 seq_printf(m, "Actual freq: %d MHz\n", cagf);
992 seq_printf(m, "Idle freq: %d MHz\n",
993 intel_gpu_freq(rps, rps->idle_freq));
994 seq_printf(m, "Min freq: %d MHz\n",
995 intel_gpu_freq(rps, rps->min_freq));
996 seq_printf(m, "Boost freq: %d MHz\n",
997 intel_gpu_freq(rps, rps->boost_freq));
998 seq_printf(m, "Max freq: %d MHz\n",
999 intel_gpu_freq(rps, rps->max_freq));
1001 "efficient (RPe) frequency: %d MHz\n",
1002 intel_gpu_freq(rps, rps->efficient_freq));
1004 seq_puts(m, "no P-state info available\n");
1007 seq_printf(m, "Current CD clock frequency: %d kHz\n", dev_priv->cdclk.hw.cdclk);
1008 seq_printf(m, "Max CD clock frequency: %d kHz\n", dev_priv->max_cdclk_freq);
1009 seq_printf(m, "Max pixel clock frequency: %d kHz\n", dev_priv->max_dotclk_freq);
1011 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
1015 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1017 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1018 struct intel_rps *rps = &dev_priv->gt.rps;
1019 unsigned int max_gpu_freq, min_gpu_freq;
1020 intel_wakeref_t wakeref;
1021 int gpu_freq, ia_freq;
1023 if (!HAS_LLC(dev_priv))
1026 min_gpu_freq = rps->min_freq;
1027 max_gpu_freq = rps->max_freq;
1028 if (IS_GEN9_BC(dev_priv) || INTEL_GEN(dev_priv) >= 10) {
1029 /* Convert GT frequency to 50 HZ units */
1030 min_gpu_freq /= GEN9_FREQ_SCALER;
1031 max_gpu_freq /= GEN9_FREQ_SCALER;
1034 seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
1036 wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
1037 for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
1039 sandybridge_pcode_read(dev_priv,
1040 GEN6_PCODE_READ_MIN_FREQ_TABLE,
1042 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
1045 (IS_GEN9_BC(dev_priv) ||
1046 INTEL_GEN(dev_priv) >= 10 ?
1047 GEN9_FREQ_SCALER : 1))),
1048 ((ia_freq >> 0) & 0xff) * 100,
1049 ((ia_freq >> 8) & 0xff) * 100);
1051 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
1056 static void describe_ctx_ring(struct seq_file *m, struct intel_ring *ring)
1058 seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, emit: %u)",
1059 ring->space, ring->head, ring->tail, ring->emit);
1062 static int i915_context_status(struct seq_file *m, void *unused)
1064 struct drm_i915_private *i915 = node_to_i915(m->private);
1065 struct i915_gem_context *ctx, *cn;
1067 spin_lock(&i915->gem.contexts.lock);
1068 list_for_each_entry_safe(ctx, cn, &i915->gem.contexts.list, link) {
1069 struct i915_gem_engines_iter it;
1070 struct intel_context *ce;
1072 if (!kref_get_unless_zero(&ctx->ref))
1075 spin_unlock(&i915->gem.contexts.lock);
1077 seq_puts(m, "HW context ");
1079 struct task_struct *task;
1081 task = get_pid_task(ctx->pid, PIDTYPE_PID);
1083 seq_printf(m, "(%s [%d]) ",
1084 task->comm, task->pid);
1085 put_task_struct(task);
1087 } else if (IS_ERR(ctx->file_priv)) {
1088 seq_puts(m, "(deleted) ");
1090 seq_puts(m, "(kernel) ");
1093 seq_putc(m, ctx->remap_slice ? 'R' : 'r');
1096 for_each_gem_engine(ce,
1097 i915_gem_context_lock_engines(ctx), it) {
1098 if (intel_context_pin_if_active(ce)) {
1099 seq_printf(m, "%s: ", ce->engine->name);
1101 i915_debugfs_describe_obj(m, ce->state->obj);
1102 describe_ctx_ring(m, ce->ring);
1104 intel_context_unpin(ce);
1107 i915_gem_context_unlock_engines(ctx);
1111 spin_lock(&i915->gem.contexts.lock);
1112 list_safe_reset_next(ctx, cn, link);
1113 i915_gem_context_put(ctx);
1115 spin_unlock(&i915->gem.contexts.lock);
1120 static const char *swizzle_string(unsigned swizzle)
1123 case I915_BIT_6_SWIZZLE_NONE:
1125 case I915_BIT_6_SWIZZLE_9:
1127 case I915_BIT_6_SWIZZLE_9_10:
1128 return "bit9/bit10";
1129 case I915_BIT_6_SWIZZLE_9_11:
1130 return "bit9/bit11";
1131 case I915_BIT_6_SWIZZLE_9_10_11:
1132 return "bit9/bit10/bit11";
1133 case I915_BIT_6_SWIZZLE_9_17:
1134 return "bit9/bit17";
1135 case I915_BIT_6_SWIZZLE_9_10_17:
1136 return "bit9/bit10/bit17";
1137 case I915_BIT_6_SWIZZLE_UNKNOWN:
1144 static int i915_swizzle_info(struct seq_file *m, void *data)
1146 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1147 struct intel_uncore *uncore = &dev_priv->uncore;
1148 intel_wakeref_t wakeref;
1150 seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1151 swizzle_string(dev_priv->ggtt.bit_6_swizzle_x));
1152 seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1153 swizzle_string(dev_priv->ggtt.bit_6_swizzle_y));
1155 if (dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES)
1156 seq_puts(m, "L-shaped memory detected\n");
1158 /* On BDW+, swizzling is not used. See detect_bit_6_swizzle() */
1159 if (INTEL_GEN(dev_priv) >= 8 || IS_VALLEYVIEW(dev_priv))
1162 wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
1164 if (IS_GEN_RANGE(dev_priv, 3, 4)) {
1165 seq_printf(m, "DDC = 0x%08x\n",
1166 intel_uncore_read(uncore, DCC));
1167 seq_printf(m, "DDC2 = 0x%08x\n",
1168 intel_uncore_read(uncore, DCC2));
1169 seq_printf(m, "C0DRB3 = 0x%04x\n",
1170 intel_uncore_read16(uncore, C0DRB3));
1171 seq_printf(m, "C1DRB3 = 0x%04x\n",
1172 intel_uncore_read16(uncore, C1DRB3));
1173 } else if (INTEL_GEN(dev_priv) >= 6) {
1174 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1175 intel_uncore_read(uncore, MAD_DIMM_C0));
1176 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1177 intel_uncore_read(uncore, MAD_DIMM_C1));
1178 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1179 intel_uncore_read(uncore, MAD_DIMM_C2));
1180 seq_printf(m, "TILECTL = 0x%08x\n",
1181 intel_uncore_read(uncore, TILECTL));
1182 if (INTEL_GEN(dev_priv) >= 8)
1183 seq_printf(m, "GAMTARBMODE = 0x%08x\n",
1184 intel_uncore_read(uncore, GAMTARBMODE));
1186 seq_printf(m, "ARB_MODE = 0x%08x\n",
1187 intel_uncore_read(uncore, ARB_MODE));
1188 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1189 intel_uncore_read(uncore, DISP_ARB_CTL));
1192 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
1197 static const char *rps_power_to_str(unsigned int power)
1199 static const char * const strings[] = {
1200 [LOW_POWER] = "low power",
1201 [BETWEEN] = "mixed",
1202 [HIGH_POWER] = "high power",
1205 if (power >= ARRAY_SIZE(strings) || !strings[power])
1208 return strings[power];
1211 static int i915_rps_boost_info(struct seq_file *m, void *data)
1213 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1214 struct intel_rps *rps = &dev_priv->gt.rps;
1216 seq_printf(m, "RPS enabled? %s\n", yesno(intel_rps_is_enabled(rps)));
1217 seq_printf(m, "RPS active? %s\n", yesno(intel_rps_is_active(rps)));
1218 seq_printf(m, "GPU busy? %s\n", yesno(dev_priv->gt.awake));
1219 seq_printf(m, "Boosts outstanding? %d\n",
1220 atomic_read(&rps->num_waiters));
1221 seq_printf(m, "Interactive? %d\n", READ_ONCE(rps->power.interactive));
1222 seq_printf(m, "Frequency requested %d, actual %d\n",
1223 intel_gpu_freq(rps, rps->cur_freq),
1224 intel_rps_read_actual_frequency(rps));
1225 seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n",
1226 intel_gpu_freq(rps, rps->min_freq),
1227 intel_gpu_freq(rps, rps->min_freq_softlimit),
1228 intel_gpu_freq(rps, rps->max_freq_softlimit),
1229 intel_gpu_freq(rps, rps->max_freq));
1230 seq_printf(m, " idle:%d, efficient:%d, boost:%d\n",
1231 intel_gpu_freq(rps, rps->idle_freq),
1232 intel_gpu_freq(rps, rps->efficient_freq),
1233 intel_gpu_freq(rps, rps->boost_freq));
1235 seq_printf(m, "Wait boosts: %d\n", atomic_read(&rps->boosts));
1237 if (INTEL_GEN(dev_priv) >= 6 && intel_rps_is_active(rps)) {
1239 u32 rpdown, rpdownei;
1241 intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
1242 rpup = I915_READ_FW(GEN6_RP_CUR_UP) & GEN6_RP_EI_MASK;
1243 rpupei = I915_READ_FW(GEN6_RP_CUR_UP_EI) & GEN6_RP_EI_MASK;
1244 rpdown = I915_READ_FW(GEN6_RP_CUR_DOWN) & GEN6_RP_EI_MASK;
1245 rpdownei = I915_READ_FW(GEN6_RP_CUR_DOWN_EI) & GEN6_RP_EI_MASK;
1246 intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
1248 seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
1249 rps_power_to_str(rps->power.mode));
1250 seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n",
1251 rpup && rpupei ? 100 * rpup / rpupei : 0,
1252 rps->power.up_threshold);
1253 seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n",
1254 rpdown && rpdownei ? 100 * rpdown / rpdownei : 0,
1255 rps->power.down_threshold);
1257 seq_puts(m, "\nRPS Autotuning inactive\n");
1263 static int i915_llc(struct seq_file *m, void *data)
1265 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1266 const bool edram = INTEL_GEN(dev_priv) > 8;
1268 seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(dev_priv)));
1269 seq_printf(m, "%s: %uMB\n", edram ? "eDRAM" : "eLLC",
1270 dev_priv->edram_size_mb);
1275 static int i915_runtime_pm_status(struct seq_file *m, void *unused)
1277 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1278 struct pci_dev *pdev = dev_priv->drm.pdev;
1280 if (!HAS_RUNTIME_PM(dev_priv))
1281 seq_puts(m, "Runtime power management not supported\n");
1283 seq_printf(m, "Runtime power status: %s\n",
1284 enableddisabled(!dev_priv->power_domains.wakeref));
1286 seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->gt.awake));
1287 seq_printf(m, "IRQs disabled: %s\n",
1288 yesno(!intel_irqs_enabled(dev_priv)));
1290 seq_printf(m, "Usage count: %d\n",
1291 atomic_read(&dev_priv->drm.dev->power.usage_count));
1293 seq_printf(m, "Device Power Management (CONFIG_PM) disabled\n");
1295 seq_printf(m, "PCI device power state: %s [%d]\n",
1296 pci_power_name(pdev->current_state),
1297 pdev->current_state);
1299 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) {
1300 struct drm_printer p = drm_seq_file_printer(m);
1302 print_intel_runtime_pm_wakeref(&dev_priv->runtime_pm, &p);
1308 static int i915_engine_info(struct seq_file *m, void *unused)
1310 struct drm_i915_private *dev_priv = node_to_i915(m->private);
1311 struct intel_engine_cs *engine;
1312 intel_wakeref_t wakeref;
1313 struct drm_printer p;
1315 wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
1317 seq_printf(m, "GT awake? %s [%d]\n",
1318 yesno(dev_priv->gt.awake),
1319 atomic_read(&dev_priv->gt.wakeref.count));
1320 seq_printf(m, "CS timestamp frequency: %u Hz\n",
1321 RUNTIME_INFO(dev_priv)->cs_timestamp_frequency_hz);
1323 p = drm_seq_file_printer(m);
1324 for_each_uabi_engine(engine, dev_priv)
1325 intel_engine_dump(engine, &p, "%s\n", engine->name);
1327 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
1332 static int i915_shrinker_info(struct seq_file *m, void *unused)
1334 struct drm_i915_private *i915 = node_to_i915(m->private);
1336 seq_printf(m, "seeks = %d\n", i915->mm.shrinker.seeks);
1337 seq_printf(m, "batch = %lu\n", i915->mm.shrinker.batch);
1342 static int i915_wa_registers(struct seq_file *m, void *unused)
1344 struct drm_i915_private *i915 = node_to_i915(m->private);
1345 struct intel_engine_cs *engine;
1347 for_each_uabi_engine(engine, i915) {
1348 const struct i915_wa_list *wal = &engine->ctx_wa_list;
1349 const struct i915_wa *wa;
1356 seq_printf(m, "%s: Workarounds applied: %u\n",
1357 engine->name, count);
1359 for (wa = wal->list; count--; wa++)
1360 seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X\n",
1361 i915_mmio_reg_offset(wa->reg),
1364 seq_printf(m, "\n");
1371 i915_wedged_get(void *data, u64 *val)
1373 struct drm_i915_private *i915 = data;
1374 int ret = intel_gt_terminally_wedged(&i915->gt);
1389 i915_wedged_set(void *data, u64 val)
1391 struct drm_i915_private *i915 = data;
1393 /* Flush any previous reset before applying for a new one */
1394 wait_event(i915->gt.reset.queue,
1395 !test_bit(I915_RESET_BACKOFF, &i915->gt.reset.flags));
1397 intel_gt_handle_error(&i915->gt, val, I915_ERROR_CAPTURE,
1398 "Manually set wedged engine mask = %llx", val);
1402 DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops,
1403 i915_wedged_get, i915_wedged_set,
1407 i915_perf_noa_delay_set(void *data, u64 val)
1409 struct drm_i915_private *i915 = data;
1412 * This would lead to infinite waits as we're doing timestamp
1413 * difference on the CS with only 32bits.
1415 if (i915_cs_timestamp_ns_to_ticks(i915, val) > U32_MAX)
1418 atomic64_set(&i915->perf.noa_programming_delay, val);
1423 i915_perf_noa_delay_get(void *data, u64 *val)
1425 struct drm_i915_private *i915 = data;
1427 *val = atomic64_read(&i915->perf.noa_programming_delay);
1431 DEFINE_SIMPLE_ATTRIBUTE(i915_perf_noa_delay_fops,
1432 i915_perf_noa_delay_get,
1433 i915_perf_noa_delay_set,
1436 #define DROP_UNBOUND BIT(0)
1437 #define DROP_BOUND BIT(1)
1438 #define DROP_RETIRE BIT(2)
1439 #define DROP_ACTIVE BIT(3)
1440 #define DROP_FREED BIT(4)
1441 #define DROP_SHRINK_ALL BIT(5)
1442 #define DROP_IDLE BIT(6)
1443 #define DROP_RESET_ACTIVE BIT(7)
1444 #define DROP_RESET_SEQNO BIT(8)
1445 #define DROP_RCU BIT(9)
1446 #define DROP_ALL (DROP_UNBOUND | \
1453 DROP_RESET_ACTIVE | \
1454 DROP_RESET_SEQNO | \
1457 i915_drop_caches_get(void *data, u64 *val)
1464 gt_drop_caches(struct intel_gt *gt, u64 val)
1468 if (val & DROP_RESET_ACTIVE &&
1469 wait_for(intel_engines_are_idle(gt), I915_IDLE_ENGINES_TIMEOUT))
1470 intel_gt_set_wedged(gt);
1472 if (val & DROP_RETIRE)
1473 intel_gt_retire_requests(gt);
1475 if (val & (DROP_IDLE | DROP_ACTIVE)) {
1476 ret = intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
1481 if (val & DROP_IDLE) {
1482 ret = intel_gt_pm_wait_for_idle(gt);
1487 if (val & DROP_RESET_ACTIVE && intel_gt_terminally_wedged(gt))
1488 intel_gt_handle_error(gt, ALL_ENGINES, 0, NULL);
1490 if (val & DROP_FREED)
1491 intel_gt_flush_buffer_pool(gt);
1497 i915_drop_caches_set(void *data, u64 val)
1499 struct drm_i915_private *i915 = data;
1502 DRM_DEBUG("Dropping caches: 0x%08llx [0x%08llx]\n",
1503 val, val & DROP_ALL);
1505 ret = gt_drop_caches(&i915->gt, val);
1509 fs_reclaim_acquire(GFP_KERNEL);
1510 if (val & DROP_BOUND)
1511 i915_gem_shrink(i915, LONG_MAX, NULL, I915_SHRINK_BOUND);
1513 if (val & DROP_UNBOUND)
1514 i915_gem_shrink(i915, LONG_MAX, NULL, I915_SHRINK_UNBOUND);
1516 if (val & DROP_SHRINK_ALL)
1517 i915_gem_shrink_all(i915);
1518 fs_reclaim_release(GFP_KERNEL);
1523 if (val & DROP_FREED)
1524 i915_gem_drain_freed_objects(i915);
1529 DEFINE_SIMPLE_ATTRIBUTE(i915_drop_caches_fops,
1530 i915_drop_caches_get, i915_drop_caches_set,
1534 i915_cache_sharing_get(void *data, u64 *val)
1536 struct drm_i915_private *dev_priv = data;
1537 intel_wakeref_t wakeref;
1540 if (!(IS_GEN_RANGE(dev_priv, 6, 7)))
1543 with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref)
1544 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1546 *val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT;
1552 i915_cache_sharing_set(void *data, u64 val)
1554 struct drm_i915_private *dev_priv = data;
1555 intel_wakeref_t wakeref;
1557 if (!(IS_GEN_RANGE(dev_priv, 6, 7)))
1563 drm_dbg(&dev_priv->drm,
1564 "Manually setting uncore sharing to %llu\n", val);
1565 with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) {
1568 /* Update the cache sharing policy here as well */
1569 snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1570 snpcr &= ~GEN6_MBC_SNPCR_MASK;
1571 snpcr |= val << GEN6_MBC_SNPCR_SHIFT;
1572 I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1578 DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
1579 i915_cache_sharing_get, i915_cache_sharing_set,
1582 static int i915_sseu_status(struct seq_file *m, void *unused)
1584 struct drm_i915_private *i915 = node_to_i915(m->private);
1585 struct intel_gt *gt = &i915->gt;
1587 return intel_sseu_status(m, gt);
1590 static int i915_forcewake_open(struct inode *inode, struct file *file)
1592 struct drm_i915_private *i915 = inode->i_private;
1593 struct intel_gt *gt = &i915->gt;
1595 atomic_inc(>->user_wakeref);
1596 intel_gt_pm_get(gt);
1597 if (INTEL_GEN(i915) >= 6)
1598 intel_uncore_forcewake_user_get(gt->uncore);
1603 static int i915_forcewake_release(struct inode *inode, struct file *file)
1605 struct drm_i915_private *i915 = inode->i_private;
1606 struct intel_gt *gt = &i915->gt;
1608 if (INTEL_GEN(i915) >= 6)
1609 intel_uncore_forcewake_user_put(&i915->uncore);
1610 intel_gt_pm_put(gt);
1611 atomic_dec(>->user_wakeref);
1616 static const struct file_operations i915_forcewake_fops = {
1617 .owner = THIS_MODULE,
1618 .open = i915_forcewake_open,
1619 .release = i915_forcewake_release,
1622 static const struct drm_info_list i915_debugfs_list[] = {
1623 {"i915_capabilities", i915_capabilities, 0},
1624 {"i915_gem_objects", i915_gem_object_info, 0},
1625 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1626 {"i915_gem_interrupt", i915_interrupt_info, 0},
1627 {"i915_frequency_info", i915_frequency_info, 0},
1628 {"i915_ring_freq_table", i915_ring_freq_table, 0},
1629 {"i915_context_status", i915_context_status, 0},
1630 {"i915_swizzle_info", i915_swizzle_info, 0},
1631 {"i915_llc", i915_llc, 0},
1632 {"i915_runtime_pm_status", i915_runtime_pm_status, 0},
1633 {"i915_engine_info", i915_engine_info, 0},
1634 {"i915_shrinker_info", i915_shrinker_info, 0},
1635 {"i915_wa_registers", i915_wa_registers, 0},
1636 {"i915_sseu_status", i915_sseu_status, 0},
1637 {"i915_rps_boost_info", i915_rps_boost_info, 0},
1639 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1641 static const struct i915_debugfs_files {
1643 const struct file_operations *fops;
1644 } i915_debugfs_files[] = {
1645 {"i915_perf_noa_delay", &i915_perf_noa_delay_fops},
1646 {"i915_wedged", &i915_wedged_fops},
1647 {"i915_cache_sharing", &i915_cache_sharing_fops},
1648 {"i915_gem_drop_caches", &i915_drop_caches_fops},
1649 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
1650 {"i915_error_state", &i915_error_state_fops},
1651 {"i915_gpu_info", &i915_gpu_info_fops},
1655 void i915_debugfs_register(struct drm_i915_private *dev_priv)
1657 struct drm_minor *minor = dev_priv->drm.primary;
1660 i915_debugfs_params(dev_priv);
1662 debugfs_create_file("i915_forcewake_user", S_IRUSR, minor->debugfs_root,
1663 to_i915(minor->dev), &i915_forcewake_fops);
1664 for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
1665 debugfs_create_file(i915_debugfs_files[i].name,
1667 minor->debugfs_root,
1668 to_i915(minor->dev),
1669 i915_debugfs_files[i].fops);
1672 drm_debugfs_create_files(i915_debugfs_list,
1673 I915_DEBUGFS_ENTRIES,
1674 minor->debugfs_root, minor);