/* * Copyright © 2008 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * * Authors: * Eric Anholt * Keith Packard * */ #include #include #include #include #include #include "display/intel_display_params.h" #include "gem/i915_gem_context.h" #include "gt/intel_gt.h" #include "gt/intel_gt_buffer_pool.h" #include "gt/intel_gt_clock_utils.h" #include "gt/intel_gt_debugfs.h" #include "gt/intel_gt_pm.h" #include "gt/intel_gt_pm_debugfs.h" #include "gt/intel_gt_regs.h" #include "gt/intel_gt_requests.h" #include "gt/intel_rc6.h" #include "gt/intel_reset.h" #include "gt/intel_rps.h" #include "gt/intel_sseu_debugfs.h" #include "i915_debugfs.h" #include "i915_debugfs_params.h" #include "i915_driver.h" #include "i915_gpu_error.h" #include "i915_irq.h" #include "i915_reg.h" #include "i915_scheduler.h" #include "intel_mchbar_regs.h" static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node) { return to_i915(node->minor->dev); } static int i915_capabilities(struct seq_file *m, void *data) { struct drm_i915_private *i915 = node_to_i915(m->private); struct intel_display *display = &i915->display; struct drm_printer p = drm_seq_file_printer(m); seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(i915)); intel_device_info_print(INTEL_INFO(i915), RUNTIME_INFO(i915), &p); i915_print_iommu_status(i915, &p); intel_gt_info_print(&to_gt(i915)->info, &p); intel_driver_caps_print(&i915->caps, &p); kernel_param_lock(THIS_MODULE); i915_params_dump(&i915->params, &p); intel_display_params_dump(display, &p); kernel_param_unlock(THIS_MODULE); return 0; } static char get_tiling_flag(struct drm_i915_gem_object *obj) { switch (i915_gem_object_get_tiling(obj)) { default: case I915_TILING_NONE: return ' '; case I915_TILING_X: return 'X'; case I915_TILING_Y: return 'Y'; } } static char get_global_flag(struct drm_i915_gem_object *obj) { return READ_ONCE(obj->userfault_count) ? 'g' : ' '; } static char get_pin_mapped_flag(struct drm_i915_gem_object *obj) { return obj->mm.mapping ? 'M' : ' '; } static const char * stringify_page_sizes(unsigned int page_sizes, char *buf, size_t len) { size_t x = 0; switch (page_sizes) { case 0: return ""; case I915_GTT_PAGE_SIZE_4K: return "4K"; case I915_GTT_PAGE_SIZE_64K: return "64K"; case I915_GTT_PAGE_SIZE_2M: return "2M"; default: if (!buf) return "M"; if (page_sizes & I915_GTT_PAGE_SIZE_2M) x += snprintf(buf + x, len - x, "2M, "); if (page_sizes & I915_GTT_PAGE_SIZE_64K) x += snprintf(buf + x, len - x, "64K, "); if (page_sizes & I915_GTT_PAGE_SIZE_4K) x += snprintf(buf + x, len - x, "4K, "); buf[x-2] = '\0'; return buf; } } static const char *stringify_vma_type(const struct i915_vma *vma) { if (i915_vma_is_ggtt(vma)) return "ggtt"; if (i915_vma_is_dpt(vma)) return "dpt"; return "ppgtt"; } static const char *i915_cache_level_str(struct drm_i915_gem_object *obj) { struct drm_i915_private *i915 = obj_to_i915(obj); if (IS_GFX_GT_IP_RANGE(to_gt(i915), IP_VER(12, 70), IP_VER(12, 74))) { switch (obj->pat_index) { case 0: return " WB"; case 1: return " WT"; case 2: return " UC"; case 3: return " WB (1-Way Coh)"; case 4: return " WB (2-Way Coh)"; default: return " not defined"; } } else if (GRAPHICS_VER(i915) >= 12) { switch (obj->pat_index) { case 0: return " WB"; case 1: return " WC"; case 2: return " WT"; case 3: return " UC"; default: return " not defined"; } } else { switch (obj->pat_index) { case 0: return " UC"; case 1: return HAS_LLC(i915) ? " LLC" : " snooped"; case 2: return " L3+LLC"; case 3: return " WT"; default: return " not defined"; } } } void i915_debugfs_describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) { struct i915_vma *vma; int pin_count = 0; seq_printf(m, "%pK: %c%c%c %8zdKiB %02x %02x %s%s%s", &obj->base, get_tiling_flag(obj), get_global_flag(obj), get_pin_mapped_flag(obj), obj->base.size / 1024, obj->read_domains, obj->write_domain, i915_cache_level_str(obj), obj->mm.dirty ? " dirty" : "", obj->mm.madv == I915_MADV_DONTNEED ? " purgeable" : ""); if (obj->base.name) seq_printf(m, " (name: %d)", obj->base.name); spin_lock(&obj->vma.lock); list_for_each_entry(vma, &obj->vma.list, obj_link) { if (!drm_mm_node_allocated(&vma->node)) continue; spin_unlock(&obj->vma.lock); if (i915_vma_is_pinned(vma)) pin_count++; seq_printf(m, " (%s offset: %08llx, size: %08llx, pages: %s", stringify_vma_type(vma), i915_vma_offset(vma), i915_vma_size(vma), stringify_page_sizes(vma->resource->page_sizes_gtt, NULL, 0)); if (i915_vma_is_ggtt(vma) || i915_vma_is_dpt(vma)) { switch (vma->gtt_view.type) { case I915_GTT_VIEW_NORMAL: seq_puts(m, ", normal"); break; case I915_GTT_VIEW_PARTIAL: seq_printf(m, ", partial [%08llx+%x]", vma->gtt_view.partial.offset << PAGE_SHIFT, vma->gtt_view.partial.size << PAGE_SHIFT); break; case I915_GTT_VIEW_ROTATED: seq_printf(m, ", rotated [(%ux%u, src_stride=%u, dst_stride=%u, offset=%u), (%ux%u, src_stride=%u, dst_stride=%u, offset=%u)]", vma->gtt_view.rotated.plane[0].width, vma->gtt_view.rotated.plane[0].height, vma->gtt_view.rotated.plane[0].src_stride, vma->gtt_view.rotated.plane[0].dst_stride, vma->gtt_view.rotated.plane[0].offset, vma->gtt_view.rotated.plane[1].width, vma->gtt_view.rotated.plane[1].height, vma->gtt_view.rotated.plane[1].src_stride, vma->gtt_view.rotated.plane[1].dst_stride, vma->gtt_view.rotated.plane[1].offset); break; case I915_GTT_VIEW_REMAPPED: seq_printf(m, ", remapped [(%ux%u, src_stride=%u, dst_stride=%u, offset=%u), (%ux%u, src_stride=%u, dst_stride=%u, offset=%u)]", vma->gtt_view.remapped.plane[0].width, vma->gtt_view.remapped.plane[0].height, vma->gtt_view.remapped.plane[0].src_stride, vma->gtt_view.remapped.plane[0].dst_stride, vma->gtt_view.remapped.plane[0].offset, vma->gtt_view.remapped.plane[1].width, vma->gtt_view.remapped.plane[1].height, vma->gtt_view.remapped.plane[1].src_stride, vma->gtt_view.remapped.plane[1].dst_stride, vma->gtt_view.remapped.plane[1].offset); break; default: MISSING_CASE(vma->gtt_view.type); break; } } if (vma->fence) seq_printf(m, " , fence: %d", vma->fence->id); seq_puts(m, ")"); spin_lock(&obj->vma.lock); } spin_unlock(&obj->vma.lock); seq_printf(m, " (pinned x %d)", pin_count); if (i915_gem_object_is_stolen(obj)) seq_printf(m, " (stolen: %08llx)", obj->stolen->start); if (i915_gem_object_is_framebuffer(obj)) seq_printf(m, " (fb)"); } static int i915_gem_object_info(struct seq_file *m, void *data) { struct drm_i915_private *i915 = node_to_i915(m->private); struct drm_printer p = drm_seq_file_printer(m); struct intel_memory_region *mr; enum intel_region_id id; seq_printf(m, "%u shrinkable [%u free] objects, %llu bytes\n", i915->mm.shrink_count, atomic_read(&i915->mm.free_count), i915->mm.shrink_memory); for_each_memory_region(mr, i915, id) intel_memory_region_debug(mr, &p); return 0; } static int i915_frequency_info(struct seq_file *m, void *unused) { struct drm_i915_private *i915 = node_to_i915(m->private); struct intel_gt *gt = to_gt(i915); struct drm_printer p = drm_seq_file_printer(m); intel_gt_pm_frequency_dump(gt, &p); return 0; } static const char *swizzle_string(unsigned swizzle) { switch (swizzle) { case I915_BIT_6_SWIZZLE_NONE: return "none"; case I915_BIT_6_SWIZZLE_9: return "bit9"; case I915_BIT_6_SWIZZLE_9_10: return "bit9/bit10"; case I915_BIT_6_SWIZZLE_9_11: return "bit9/bit11"; case I915_BIT_6_SWIZZLE_9_10_11: return "bit9/bit10/bit11"; case I915_BIT_6_SWIZZLE_9_17: return "bit9/bit17"; case I915_BIT_6_SWIZZLE_9_10_17: return "bit9/bit10/bit17"; case I915_BIT_6_SWIZZLE_UNKNOWN: return "unknown"; } return "bug"; } static int i915_swizzle_info(struct seq_file *m, void *data) { struct drm_i915_private *dev_priv = node_to_i915(m->private); struct intel_uncore *uncore = &dev_priv->uncore; intel_wakeref_t wakeref; seq_printf(m, "bit6 swizzle for X-tiling = %s\n", swizzle_string(to_gt(dev_priv)->ggtt->bit_6_swizzle_x)); seq_printf(m, "bit6 swizzle for Y-tiling = %s\n", swizzle_string(to_gt(dev_priv)->ggtt->bit_6_swizzle_y)); if (dev_priv->gem_quirks & GEM_QUIRK_PIN_SWIZZLED_PAGES) seq_puts(m, "L-shaped memory detected\n"); /* On BDW+, swizzling is not used. See detect_bit_6_swizzle() */ if (GRAPHICS_VER(dev_priv) >= 8 || IS_VALLEYVIEW(dev_priv)) return 0; wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); if (IS_GRAPHICS_VER(dev_priv, 3, 4)) { seq_printf(m, "DDC = 0x%08x\n", intel_uncore_read(uncore, DCC)); seq_printf(m, "DDC2 = 0x%08x\n", intel_uncore_read(uncore, DCC2)); seq_printf(m, "C0DRB3 = 0x%04x\n", intel_uncore_read16(uncore, C0DRB3_BW)); seq_printf(m, "C1DRB3 = 0x%04x\n", intel_uncore_read16(uncore, C1DRB3_BW)); } else if (GRAPHICS_VER(dev_priv) >= 6) { seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n", intel_uncore_read(uncore, MAD_DIMM_C0)); seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n", intel_uncore_read(uncore, MAD_DIMM_C1)); seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n", intel_uncore_read(uncore, MAD_DIMM_C2)); seq_printf(m, "TILECTL = 0x%08x\n", intel_uncore_read(uncore, TILECTL)); if (GRAPHICS_VER(dev_priv) >= 8) seq_printf(m, "GAMTARBMODE = 0x%08x\n", intel_uncore_read(uncore, GAMTARBMODE)); else seq_printf(m, "ARB_MODE = 0x%08x\n", intel_uncore_read(uncore, ARB_MODE)); seq_printf(m, "DISP_ARB_CTL = 0x%08x\n", intel_uncore_read(uncore, DISP_ARB_CTL)); } intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); return 0; } static int i915_rps_boost_info(struct seq_file *m, void *data) { struct drm_i915_private *dev_priv = node_to_i915(m->private); struct intel_rps *rps = &to_gt(dev_priv)->rps; seq_printf(m, "RPS enabled? %s\n", str_yes_no(intel_rps_is_enabled(rps))); seq_printf(m, "RPS active? %s\n", str_yes_no(intel_rps_is_active(rps))); seq_printf(m, "GPU busy? %s\n", str_yes_no(to_gt(dev_priv)->awake)); seq_printf(m, "Boosts outstanding? %d\n", atomic_read(&rps->num_waiters)); seq_printf(m, "Interactive? %d\n", READ_ONCE(rps->power.interactive)); seq_printf(m, "Frequency requested %d, actual %d\n", intel_gpu_freq(rps, rps->cur_freq), intel_rps_read_actual_frequency(rps)); seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n", intel_gpu_freq(rps, rps->min_freq), intel_gpu_freq(rps, rps->min_freq_softlimit), intel_gpu_freq(rps, rps->max_freq_softlimit), intel_gpu_freq(rps, rps->max_freq)); seq_printf(m, " idle:%d, efficient:%d, boost:%d\n", intel_gpu_freq(rps, rps->idle_freq), intel_gpu_freq(rps, rps->efficient_freq), intel_gpu_freq(rps, rps->boost_freq)); seq_printf(m, "Wait boosts: %d\n", READ_ONCE(rps->boosts)); return 0; } static int i915_runtime_pm_status(struct seq_file *m, void *unused) { struct drm_i915_private *dev_priv = node_to_i915(m->private); struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); if (!HAS_RUNTIME_PM(dev_priv)) seq_puts(m, "Runtime power management not supported\n"); seq_printf(m, "Runtime power status: %s\n", str_enabled_disabled(!dev_priv->display.power.domains.init_wakeref)); seq_printf(m, "GPU idle: %s\n", str_yes_no(!to_gt(dev_priv)->awake)); seq_printf(m, "IRQs disabled: %s\n", str_yes_no(!intel_irqs_enabled(dev_priv))); #ifdef CONFIG_PM seq_printf(m, "Usage count: %d\n", atomic_read(&dev_priv->drm.dev->power.usage_count)); #else seq_printf(m, "Device Power Management (CONFIG_PM) disabled\n"); #endif seq_printf(m, "PCI device power state: %s [%d]\n", pci_power_name(pdev->current_state), pdev->current_state); if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) { struct drm_printer p = drm_seq_file_printer(m); print_intel_runtime_pm_wakeref(&dev_priv->runtime_pm, &p); } return 0; } static int i915_engine_info(struct seq_file *m, void *unused) { struct drm_i915_private *i915 = node_to_i915(m->private); struct intel_engine_cs *engine; intel_wakeref_t wakeref; struct drm_printer p; wakeref = intel_runtime_pm_get(&i915->runtime_pm); seq_printf(m, "GT awake? %s [%d], %llums\n", str_yes_no(to_gt(i915)->awake), atomic_read(&to_gt(i915)->wakeref.count), ktime_to_ms(intel_gt_get_awake_time(to_gt(i915)))); seq_printf(m, "CS timestamp frequency: %u Hz, %d ns\n", to_gt(i915)->clock_frequency, to_gt(i915)->clock_period_ns); p = drm_seq_file_printer(m); for_each_uabi_engine(engine, i915) intel_engine_dump(engine, &p, "%s\n", engine->name); intel_gt_show_timelines(to_gt(i915), &p, i915_request_show_with_schedule); intel_runtime_pm_put(&i915->runtime_pm, wakeref); return 0; } static int i915_wa_registers(struct seq_file *m, void *unused) { struct drm_i915_private *i915 = node_to_i915(m->private); struct intel_engine_cs *engine; for_each_uabi_engine(engine, i915) { const struct i915_wa_list *wal = &engine->ctx_wa_list; const struct i915_wa *wa; unsigned int count; count = wal->count; if (!count) continue; seq_printf(m, "%s: Workarounds applied: %u\n", engine->name, count); for (wa = wal->list; count--; wa++) seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X\n", i915_mmio_reg_offset(wa->reg), wa->set, wa->clr); seq_printf(m, "\n"); } return 0; } static int i915_wedged_get(void *data, u64 *val) { struct drm_i915_private *i915 = data; struct intel_gt *gt; unsigned int i; *val = 0; for_each_gt(gt, i915, i) { int ret; ret = intel_gt_debugfs_reset_show(gt, val); if (ret) return ret; /* at least one tile should be wedged */ if (*val) break; } return 0; } static int i915_wedged_set(void *data, u64 val) { struct drm_i915_private *i915 = data; struct intel_gt *gt; unsigned int i; for_each_gt(gt, i915, i) intel_gt_debugfs_reset_store(gt, val); return 0; } DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops, i915_wedged_get, i915_wedged_set, "%llu\n"); static int i915_perf_noa_delay_set(void *data, u64 val) { struct drm_i915_private *i915 = data; /* * This would lead to infinite waits as we're doing timestamp * difference on the CS with only 32bits. */ if (intel_gt_ns_to_clock_interval(to_gt(i915), val) > U32_MAX) return -EINVAL; atomic64_set(&i915->perf.noa_programming_delay, val); return 0; } static int i915_perf_noa_delay_get(void *data, u64 *val) { struct drm_i915_private *i915 = data; *val = atomic64_read(&i915->perf.noa_programming_delay); return 0; } DEFINE_SIMPLE_ATTRIBUTE(i915_perf_noa_delay_fops, i915_perf_noa_delay_get, i915_perf_noa_delay_set, "%llu\n"); #define DROP_UNBOUND BIT(0) #define DROP_BOUND BIT(1) #define DROP_RETIRE BIT(2) #define DROP_ACTIVE BIT(3) #define DROP_FREED BIT(4) #define DROP_SHRINK_ALL BIT(5) #define DROP_IDLE BIT(6) #define DROP_RESET_ACTIVE BIT(7) #define DROP_RESET_SEQNO BIT(8) #define DROP_RCU BIT(9) #define DROP_ALL (DROP_UNBOUND | \ DROP_BOUND | \ DROP_RETIRE | \ DROP_ACTIVE | \ DROP_FREED | \ DROP_SHRINK_ALL |\ DROP_IDLE | \ DROP_RESET_ACTIVE | \ DROP_RESET_SEQNO | \ DROP_RCU) static int i915_drop_caches_get(void *data, u64 *val) { *val = DROP_ALL; return 0; } static int gt_drop_caches(struct intel_gt *gt, u64 val) { int ret; if (val & DROP_RESET_ACTIVE && wait_for(intel_engines_are_idle(gt), 200)) intel_gt_set_wedged(gt); if (val & DROP_RETIRE) intel_gt_retire_requests(gt); if (val & (DROP_IDLE | DROP_ACTIVE)) { ret = intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT); if (ret) return ret; } if (val & DROP_IDLE) { ret = intel_gt_pm_wait_for_idle(gt); if (ret) return ret; } if (val & DROP_RESET_ACTIVE && intel_gt_terminally_wedged(gt)) intel_gt_handle_error(gt, ALL_ENGINES, 0, NULL); if (val & DROP_FREED) intel_gt_flush_buffer_pool(gt); return 0; } static int i915_drop_caches_set(void *data, u64 val) { struct drm_i915_private *i915 = data; struct intel_gt *gt; unsigned int flags; unsigned int i; int ret; drm_dbg(&i915->drm, "Dropping caches: 0x%08llx [0x%08llx]\n", val, val & DROP_ALL); for_each_gt(gt, i915, i) { ret = gt_drop_caches(gt, val); if (ret) return ret; } fs_reclaim_acquire(GFP_KERNEL); flags = memalloc_noreclaim_save(); if (val & DROP_BOUND) i915_gem_shrink(NULL, i915, LONG_MAX, NULL, I915_SHRINK_BOUND); if (val & DROP_UNBOUND) i915_gem_shrink(NULL, i915, LONG_MAX, NULL, I915_SHRINK_UNBOUND); if (val & DROP_SHRINK_ALL) i915_gem_shrink_all(i915); memalloc_noreclaim_restore(flags); fs_reclaim_release(GFP_KERNEL); if (val & DROP_RCU) rcu_barrier(); if (val & DROP_FREED) i915_gem_drain_freed_objects(i915); return 0; } DEFINE_SIMPLE_ATTRIBUTE(i915_drop_caches_fops, i915_drop_caches_get, i915_drop_caches_set, "0x%08llx\n"); static int i915_sseu_status(struct seq_file *m, void *unused) { struct drm_i915_private *i915 = node_to_i915(m->private); struct intel_gt *gt = to_gt(i915); return intel_sseu_status(m, gt); } static int i915_forcewake_open(struct inode *inode, struct file *file) { struct drm_i915_private *i915 = inode->i_private; struct intel_gt *gt; unsigned int i; for_each_gt(gt, i915, i) intel_gt_pm_debugfs_forcewake_user_open(gt); return 0; } static int i915_forcewake_release(struct inode *inode, struct file *file) { struct drm_i915_private *i915 = inode->i_private; struct intel_gt *gt; unsigned int i; for_each_gt(gt, i915, i) intel_gt_pm_debugfs_forcewake_user_release(gt); return 0; } static const struct file_operations i915_forcewake_fops = { .owner = THIS_MODULE, .open = i915_forcewake_open, .release = i915_forcewake_release, }; static const struct drm_info_list i915_debugfs_list[] = { {"i915_capabilities", i915_capabilities, 0}, {"i915_gem_objects", i915_gem_object_info, 0}, {"i915_frequency_info", i915_frequency_info, 0}, {"i915_swizzle_info", i915_swizzle_info, 0}, {"i915_runtime_pm_status", i915_runtime_pm_status, 0}, {"i915_engine_info", i915_engine_info, 0}, {"i915_wa_registers", i915_wa_registers, 0}, {"i915_sseu_status", i915_sseu_status, 0}, {"i915_rps_boost_info", i915_rps_boost_info, 0}, }; static const struct i915_debugfs_files { const char *name; const struct file_operations *fops; } i915_debugfs_files[] = { {"i915_perf_noa_delay", &i915_perf_noa_delay_fops}, {"i915_wedged", &i915_wedged_fops}, {"i915_gem_drop_caches", &i915_drop_caches_fops}, }; void i915_debugfs_register(struct drm_i915_private *dev_priv) { struct drm_minor *minor = dev_priv->drm.primary; int i; i915_debugfs_params(dev_priv); debugfs_create_file("i915_forcewake_user", S_IRUSR, minor->debugfs_root, to_i915(minor->dev), &i915_forcewake_fops); for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) { debugfs_create_file(i915_debugfs_files[i].name, S_IRUGO | S_IWUSR, minor->debugfs_root, to_i915(minor->dev), i915_debugfs_files[i].fops); } drm_debugfs_create_files(i915_debugfs_list, ARRAY_SIZE(i915_debugfs_list), minor->debugfs_root, minor); i915_gpu_error_debugfs_register(dev_priv); }