diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 749 |
1 files changed, 436 insertions, 313 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index fa69d72fdcb9..d689e511744e 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -27,7 +27,7 @@ */ #include <linux/debugfs.h> -#include <linux/list_sort.h> +#include <linux/sort.h> #include "intel_drv.h" static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node) @@ -35,30 +35,21 @@ static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node) return to_i915(node->minor->dev); } -/* As the drm_debugfs_init() routines are called before dev->dev_private is - * allocated we need to hook into the minor for release. */ -static int -drm_add_fake_info_node(struct drm_minor *minor, - struct dentry *ent, - const void *key) +static __always_inline void seq_print_param(struct seq_file *m, + const char *name, + const char *type, + const void *x) { - struct drm_info_node *node; - - node = kmalloc(sizeof(*node), GFP_KERNEL); - if (node == NULL) { - debugfs_remove(ent); - return -ENOMEM; - } - - node->minor = minor; - node->dent = ent; - node->info_ent = (void *)key; - - mutex_lock(&minor->debugfs_lock); - list_add(&node->list, &minor->debugfs_list); - mutex_unlock(&minor->debugfs_lock); - - return 0; + if (!__builtin_strcmp(type, "bool")) + seq_printf(m, "i915.%s=%s\n", name, yesno(*(const bool *)x)); + else if (!__builtin_strcmp(type, "int")) + seq_printf(m, "i915.%s=%d\n", name, *(const int *)x); + else if (!__builtin_strcmp(type, "unsigned int")) + seq_printf(m, "i915.%s=%u\n", name, *(const unsigned int *)x); + else if (!__builtin_strcmp(type, "char *")) + seq_printf(m, "i915.%s=%s\n", name, *(const char **)x); + else + BUILD_BUG(); } static int i915_capabilities(struct seq_file *m, void *data) @@ -69,10 +60,17 @@ static int i915_capabilities(struct seq_file *m, void *data) seq_printf(m, "gen: %d\n", INTEL_GEN(dev_priv)); seq_printf(m, "platform: %s\n", intel_platform_name(info->platform)); seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev_priv)); + #define PRINT_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x)) DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG); #undef PRINT_FLAG + kernel_param_lock(THIS_MODULE); +#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915.x); + I915_PARAMS_FOR_EACH(PRINT_PARAM); +#undef PRINT_PARAM + kernel_param_unlock(THIS_MODULE); + return 0; } @@ -206,13 +204,12 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) seq_printf(m, " (frontbuffer: 0x%03x)", frontbuffer_bits); } -static int obj_rank_by_stolen(void *priv, - struct list_head *A, struct list_head *B) +static int obj_rank_by_stolen(const void *A, const void *B) { - struct drm_i915_gem_object *a = - container_of(A, struct drm_i915_gem_object, obj_exec_link); - struct drm_i915_gem_object *b = - container_of(B, struct drm_i915_gem_object, obj_exec_link); + const struct drm_i915_gem_object *a = + *(const struct drm_i915_gem_object **)A; + const struct drm_i915_gem_object *b = + *(const struct drm_i915_gem_object **)B; if (a->stolen->start < b->stolen->start) return -1; @@ -225,49 +222,60 @@ static int i915_gem_stolen_list_info(struct seq_file *m, void *data) { struct drm_i915_private *dev_priv = node_to_i915(m->private); struct drm_device *dev = &dev_priv->drm; + struct drm_i915_gem_object **objects; struct drm_i915_gem_object *obj; u64 total_obj_size, total_gtt_size; - LIST_HEAD(stolen); - int count, ret; + unsigned long total, count, n; + int ret; + + total = READ_ONCE(dev_priv->mm.object_count); + objects = drm_malloc_ab(total, sizeof(*objects)); + if (!objects) + return -ENOMEM; ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) - return ret; + goto out; total_obj_size = total_gtt_size = count = 0; list_for_each_entry(obj, &dev_priv->mm.bound_list, global_link) { + if (count == total) + break; + if (obj->stolen == NULL) continue; - list_add(&obj->obj_exec_link, &stolen); - + objects[count++] = obj; total_obj_size += obj->base.size; total_gtt_size += i915_gem_obj_total_ggtt_size(obj); - count++; + } list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_link) { + if (count == total) + break; + if (obj->stolen == NULL) continue; - list_add(&obj->obj_exec_link, &stolen); - + objects[count++] = obj; total_obj_size += obj->base.size; - count++; } - list_sort(NULL, &stolen, obj_rank_by_stolen); + + sort(objects, count, sizeof(*objects), obj_rank_by_stolen, NULL); + seq_puts(m, "Stolen:\n"); - while (!list_empty(&stolen)) { - obj = list_first_entry(&stolen, typeof(*obj), obj_exec_link); + for (n = 0; n < count; n++) { seq_puts(m, " "); - describe_obj(m, obj); + describe_obj(m, objects[n]); seq_putc(m, '\n'); - list_del_init(&obj->obj_exec_link); } - mutex_unlock(&dev->struct_mutex); - - seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n", + seq_printf(m, "Total %lu objects, %llu bytes, %llu GTT size\n", count, total_obj_size, total_gtt_size); - return 0; + + mutex_unlock(&dev->struct_mutex); +out: + drm_free_large(objects); + return ret; } struct file_stats { @@ -454,7 +462,7 @@ static int i915_gem_object_info(struct seq_file *m, void *data) dpy_count, dpy_size); seq_printf(m, "%llu [%llu] gtt total\n", - ggtt->base.total, ggtt->mappable_end - ggtt->base.start); + ggtt->base.total, ggtt->mappable_end); seq_putc(m, '\n'); print_batch_pool_stats(m, dev_priv); @@ -482,7 +490,7 @@ static int i915_gem_object_info(struct seq_file *m, void *data) mutex_lock(&dev->struct_mutex); request = list_first_entry_or_null(&file_priv->mm.request_list, struct drm_i915_gem_request, - client_list); + client_link); rcu_read_lock(); task = pid_task(request && request->ctx->pid ? request->ctx->pid : file->pid, @@ -702,14 +710,14 @@ static void i915_ring_seqno_info(struct seq_file *m, seq_printf(m, "Current sequence (%s): %x\n", engine->name, intel_engine_get_seqno(engine)); - spin_lock_irq(&b->lock); + spin_lock_irq(&b->rb_lock); for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) { struct intel_wait *w = rb_entry(rb, typeof(*w), node); seq_printf(m, "Waiting (%s): %s [%d] on %x\n", engine->name, w->tsk->comm, w->tsk->pid, w->seqno); } - spin_unlock_irq(&b->lock); + spin_unlock_irq(&b->rb_lock); } static int i915_gem_seqno_info(struct seq_file *m, void *data) @@ -853,10 +861,22 @@ static int i915_interrupt_info(struct seq_file *m, void *data) I915_READ(VLV_IIR_RW)); seq_printf(m, "Display IMR:\t%08x\n", I915_READ(VLV_IMR)); - for_each_pipe(dev_priv, pipe) + for_each_pipe(dev_priv, pipe) { + enum intel_display_power_domain power_domain; + + power_domain = POWER_DOMAIN_PIPE(pipe); + if (!intel_display_power_get_if_enabled(dev_priv, + power_domain)) { + seq_printf(m, "Pipe %c power disabled\n", + pipe_name(pipe)); + continue; + } + seq_printf(m, "Pipe %c stat:\t%08x\n", pipe_name(pipe), I915_READ(PIPESTAT(pipe))); + intel_display_power_put(dev_priv, power_domain); + } seq_printf(m, "Master IER:\t%08x\n", I915_READ(VLV_MASTER_IER)); @@ -954,101 +974,99 @@ static int i915_gem_fence_regs_info(struct seq_file *m, void *data) } #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) - -static ssize_t -i915_error_state_write(struct file *filp, - const char __user *ubuf, - size_t cnt, - loff_t *ppos) +static ssize_t gpu_state_read(struct file *file, char __user *ubuf, + size_t count, loff_t *pos) { - struct i915_error_state_file_priv *error_priv = filp->private_data; - - DRM_DEBUG_DRIVER("Resetting error state\n"); - i915_destroy_error_state(error_priv->i915); + struct i915_gpu_state *error = file->private_data; + struct drm_i915_error_state_buf str; + ssize_t ret; + loff_t tmp; - return cnt; -} - -static int i915_error_state_open(struct inode *inode, struct file *file) -{ - struct drm_i915_private *dev_priv = inode->i_private; - struct i915_error_state_file_priv *error_priv; + if (!error) + return 0; - error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL); - if (!error_priv) - return -ENOMEM; + ret = i915_error_state_buf_init(&str, error->i915, count, *pos); + if (ret) + return ret; - error_priv->i915 = dev_priv; + ret = i915_error_state_to_str(&str, error); + if (ret) + goto out; - i915_error_state_get(&dev_priv->drm, error_priv); + tmp = 0; + ret = simple_read_from_buffer(ubuf, count, &tmp, str.buf, str.bytes); + if (ret < 0) + goto out; - file->private_data = error_priv; + *pos = str.start + ret; +out: + i915_error_state_buf_release(&str); + return ret; +} +static int gpu_state_release(struct inode *inode, struct file *file) +{ + i915_gpu_state_put(file->private_data); return 0; } -static int i915_error_state_release(struct inode *inode, struct file *file) +static int i915_gpu_info_open(struct inode *inode, struct file *file) { - struct i915_error_state_file_priv *error_priv = file->private_data; + struct drm_i915_private *i915 = inode->i_private; + struct i915_gpu_state *gpu; - i915_error_state_put(error_priv); - kfree(error_priv); + intel_runtime_pm_get(i915); + gpu = i915_capture_gpu_state(i915); + intel_runtime_pm_put(i915); + if (!gpu) + return -ENOMEM; + file->private_data = gpu; return 0; } -static ssize_t i915_error_state_read(struct file *file, char __user *userbuf, - size_t count, loff_t *pos) +static const struct file_operations i915_gpu_info_fops = { + .owner = THIS_MODULE, + .open = i915_gpu_info_open, + .read = gpu_state_read, + .llseek = default_llseek, + .release = gpu_state_release, +}; + +static ssize_t +i915_error_state_write(struct file *filp, + const char __user *ubuf, + size_t cnt, + loff_t *ppos) { - struct i915_error_state_file_priv *error_priv = file->private_data; - struct drm_i915_error_state_buf error_str; - loff_t tmp_pos = 0; - ssize_t ret_count = 0; - int ret; + struct i915_gpu_state *error = filp->private_data; - ret = i915_error_state_buf_init(&error_str, error_priv->i915, - count, *pos); - if (ret) - return ret; + if (!error) + return 0; - ret = i915_error_state_to_str(&error_str, error_priv); - if (ret) - goto out; + DRM_DEBUG_DRIVER("Resetting error state\n"); + i915_reset_error_state(error->i915); - ret_count = simple_read_from_buffer(userbuf, count, &tmp_pos, - error_str.buf, - error_str.bytes); + return cnt; +} - if (ret_count < 0) - ret = ret_count; - else - *pos = error_str.start + ret_count; -out: - i915_error_state_buf_release(&error_str); - return ret ?: ret_count; +static int i915_error_state_open(struct inode *inode, struct file *file) +{ + file->private_data = i915_first_error_state(inode->i_private); + return 0; } static const struct file_operations i915_error_state_fops = { .owner = THIS_MODULE, .open = i915_error_state_open, - .read = i915_error_state_read, + .read = gpu_state_read, .write = i915_error_state_write, .llseek = default_llseek, - .release = i915_error_state_release, + .release = gpu_state_release, }; - #endif static int -i915_next_seqno_get(void *data, u64 *val) -{ - struct drm_i915_private *dev_priv = data; - - *val = 1 + atomic_read(&dev_priv->gt.global_timeline.seqno); - return 0; -} - -static int i915_next_seqno_set(void *data, u64 val) { struct drm_i915_private *dev_priv = data; @@ -1066,13 +1084,12 @@ i915_next_seqno_set(void *data, u64 val) } DEFINE_SIMPLE_ATTRIBUTE(i915_next_seqno_fops, - i915_next_seqno_get, i915_next_seqno_set, + NULL, i915_next_seqno_set, "0x%llx\n"); static int i915_frequency_info(struct seq_file *m, void *unused) { struct drm_i915_private *dev_priv = node_to_i915(m->private); - struct drm_device *dev = &dev_priv->drm; int ret = 0; intel_runtime_pm_get(dev_priv); @@ -1135,10 +1152,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused) } /* RPSTAT1 is in the GT power well */ - ret = mutex_lock_interruptible(&dev->struct_mutex); - if (ret) - goto out; - intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); reqf = I915_READ(GEN6_RPNSWREQ); @@ -1173,7 +1186,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused) cagf = intel_gpu_freq(dev_priv, cagf); intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); - mutex_unlock(&dev->struct_mutex); if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv)) { pm_ier = I915_READ(GEN6_PMIER); @@ -1190,7 +1202,8 @@ static int i915_frequency_info(struct seq_file *m, void *unused) } seq_printf(m, "PM IER=0x%08x IMR=0x%08x ISR=0x%08x IIR=0x%08x, MASK=0x%08x\n", pm_ier, pm_imr, pm_isr, pm_iir, pm_mask); - seq_printf(m, "pm_intr_keep: 0x%08x\n", dev_priv->rps.pm_intr_keep); + seq_printf(m, "pm_intrmsk_mbz: 0x%08x\n", + dev_priv->rps.pm_intrmsk_mbz); seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status); seq_printf(m, "Render p-state ratio: %d\n", (gt_perf_status & (IS_GEN9(dev_priv) ? 0x1ff00 : 0xff00)) >> 8); @@ -1224,21 +1237,18 @@ static int i915_frequency_info(struct seq_file *m, void *unused) max_freq = (IS_GEN9_LP(dev_priv) ? rp_state_cap >> 0 : rp_state_cap >> 16) & 0xff; - max_freq *= (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ? - GEN9_FREQ_SCALER : 1); + max_freq *= (IS_GEN9_BC(dev_priv) ? GEN9_FREQ_SCALER : 1); seq_printf(m, "Lowest (RPN) frequency: %dMHz\n", intel_gpu_freq(dev_priv, max_freq)); max_freq = (rp_state_cap & 0xff00) >> 8; - max_freq *= (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ? - GEN9_FREQ_SCALER : 1); + max_freq *= (IS_GEN9_BC(dev_priv) ? GEN9_FREQ_SCALER : 1); seq_printf(m, "Nominal (RP1) frequency: %dMHz\n", intel_gpu_freq(dev_priv, max_freq)); max_freq = (IS_GEN9_LP(dev_priv) ? rp_state_cap >> 16 : rp_state_cap >> 0) & 0xff; - max_freq *= (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ? - GEN9_FREQ_SCALER : 1); + max_freq *= (IS_GEN9_BC(dev_priv) ? GEN9_FREQ_SCALER : 1); seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n", intel_gpu_freq(dev_priv, max_freq)); seq_printf(m, "Max overclocked frequency: %dMHz\n", @@ -1262,11 +1272,10 @@ static int i915_frequency_info(struct seq_file *m, void *unused) seq_puts(m, "no P-state info available\n"); } - seq_printf(m, "Current CD clock frequency: %d kHz\n", dev_priv->cdclk_freq); + seq_printf(m, "Current CD clock frequency: %d kHz\n", dev_priv->cdclk.hw.cdclk); seq_printf(m, "Max CD clock frequency: %d kHz\n", dev_priv->max_cdclk_freq); seq_printf(m, "Max pixel clock frequency: %d kHz\n", dev_priv->max_dotclk_freq); -out: intel_runtime_pm_put(dev_priv); return ret; } @@ -1309,16 +1318,18 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) enum intel_engine_id id; if (test_bit(I915_WEDGED, &dev_priv->gpu_error.flags)) - seq_printf(m, "Wedged\n"); - if (test_bit(I915_RESET_IN_PROGRESS, &dev_priv->gpu_error.flags)) - seq_printf(m, "Reset in progress\n"); + seq_puts(m, "Wedged\n"); + if (test_bit(I915_RESET_BACKOFF, &dev_priv->gpu_error.flags)) + seq_puts(m, "Reset in progress: struct_mutex backoff\n"); + if (test_bit(I915_RESET_HANDOFF, &dev_priv->gpu_error.flags)) + seq_puts(m, "Reset in progress: reset handoff to waiter\n"); if (waitqueue_active(&dev_priv->gpu_error.wait_queue)) - seq_printf(m, "Waiter holding struct mutex\n"); + seq_puts(m, "Waiter holding struct mutex\n"); if (waitqueue_active(&dev_priv->gpu_error.reset_queue)) - seq_printf(m, "struct_mutex blocked for reset\n"); + seq_puts(m, "struct_mutex blocked for reset\n"); if (!i915.enable_hangcheck) { - seq_printf(m, "Hangcheck disabled\n"); + seq_puts(m, "Hangcheck disabled\n"); return 0; } @@ -1333,35 +1344,40 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) intel_runtime_pm_put(dev_priv); - if (delayed_work_pending(&dev_priv->gpu_error.hangcheck_work)) { - seq_printf(m, "Hangcheck active, fires in %dms\n", + if (timer_pending(&dev_priv->gpu_error.hangcheck_work.timer)) + seq_printf(m, "Hangcheck active, timer fires in %dms\n", jiffies_to_msecs(dev_priv->gpu_error.hangcheck_work.timer.expires - jiffies)); - } else - seq_printf(m, "Hangcheck inactive\n"); + else if (delayed_work_pending(&dev_priv->gpu_error.hangcheck_work)) + seq_puts(m, "Hangcheck active, work pending\n"); + else + seq_puts(m, "Hangcheck inactive\n"); + + seq_printf(m, "GT active? %s\n", yesno(dev_priv->gt.awake)); for_each_engine(engine, dev_priv, id) { struct intel_breadcrumbs *b = &engine->breadcrumbs; struct rb_node *rb; seq_printf(m, "%s:\n", engine->name); - seq_printf(m, "\tseqno = %x [current %x, last %x]\n", + seq_printf(m, "\tseqno = %x [current %x, last %x], inflight %d\n", engine->hangcheck.seqno, seqno[id], - intel_engine_last_submit(engine)); + intel_engine_last_submit(engine), + engine->timeline->inflight_seqnos); seq_printf(m, "\twaiters? %s, fake irq active? %s, stalled? %s\n", yesno(intel_engine_has_waiter(engine)), yesno(test_bit(engine->id, &dev_priv->gpu_error.missed_irq_rings)), yesno(engine->hangcheck.stalled)); - spin_lock_irq(&b->lock); + spin_lock_irq(&b->rb_lock); for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) { struct intel_wait *w = rb_entry(rb, typeof(*w), node); seq_printf(m, "\t%s [%d] waiting for %x\n", w->tsk->comm, w->tsk->pid, w->seqno); } - spin_unlock_irq(&b->lock); + spin_unlock_irq(&b->rb_lock); seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n", (long long)engine->hangcheck.acthd, @@ -1393,14 +1409,10 @@ static int ironlake_drpc_info(struct seq_file *m) u32 rgvmodectl, rstdbyctl; u16 crstandvid; - intel_runtime_pm_get(dev_priv); - rgvmodectl = I915_READ(MEMMODECTL); rstdbyctl = I915_READ(RSTDBYCTL); crstandvid = I915_READ16(CRSTANDVID); - intel_runtime_pm_put(dev_priv); - seq_printf(m, "HD boost: %s\n", yesno(rgvmodectl & MEMMODE_BOOST_EN)); seq_printf(m, "Boost freq: %d\n", (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >> @@ -1450,33 +1462,38 @@ static int ironlake_drpc_info(struct seq_file *m) static int i915_forcewake_domains(struct seq_file *m, void *data) { - struct drm_i915_private *dev_priv = node_to_i915(m->private); + struct drm_i915_private *i915 = node_to_i915(m->private); struct intel_uncore_forcewake_domain *fw_domain; + unsigned int tmp; - spin_lock_irq(&dev_priv->uncore.lock); - for_each_fw_domain(fw_domain, dev_priv) { + for_each_fw_domain(fw_domain, i915, tmp) seq_printf(m, "%s.wake_count = %u\n", intel_uncore_forcewake_domain_to_str(fw_domain->id), - fw_domain->wake_count); - } - spin_unlock_irq(&dev_priv->uncore.lock); + READ_ONCE(fw_domain->wake_count)); return 0; } +static void print_rc6_res(struct seq_file *m, + const char *title, + const i915_reg_t reg) +{ + struct drm_i915_private *dev_priv = node_to_i915(m->private); + + seq_printf(m, "%s %u (%llu us)\n", + title, I915_READ(reg), + intel_rc6_residency_us(dev_priv, reg)); +} + static int vlv_drpc_info(struct seq_file *m) { struct drm_i915_private *dev_priv = node_to_i915(m->private); u32 rpmodectl1, rcctl1, pw_status; - intel_runtime_pm_get(dev_priv); - pw_status = I915_READ(VLV_GTLC_PW_STATUS); rpmodectl1 = I915_READ(GEN6_RP_CONTROL); rcctl1 = I915_READ(GEN6_RC_CONTROL); - intel_runtime_pm_put(dev_priv); - seq_printf(m, "Video Turbo Mode: %s\n", yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO)); seq_printf(m, "Turbo enabled: %s\n", @@ -1494,10 +1511,8 @@ static int vlv_drpc_info(struct seq_file *m) seq_printf(m, "Media Power Well: %s\n", (pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down"); - seq_printf(m, "Render RC6 residency since boot: %u\n", - I915_READ(VLV_GT_RENDER_RC6)); - seq_printf(m, "Media RC6 residency since boot: %u\n", - I915_READ(VLV_GT_MEDIA_RC6)); + print_rc6_res(m, "Render RC6 residency since boot:", VLV_GT_RENDER_RC6); + print_rc6_res(m, "Media RC6 residency since boot:", VLV_GT_MEDIA_RC6); return i915_forcewake_domains(m, NULL); } @@ -1505,21 +1520,12 @@ static int vlv_drpc_info(struct seq_file *m) static int gen6_drpc_info(struct seq_file *m) { struct drm_i915_private *dev_priv = node_to_i915(m->private); - struct drm_device *dev = &dev_priv->drm; u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0; u32 gen9_powergate_enable = 0, gen9_powergate_status = 0; unsigned forcewake_count; - int count = 0, ret; - - ret = mutex_lock_interruptible(&dev->struct_mutex); - if (ret) - return ret; - intel_runtime_pm_get(dev_priv); - - spin_lock_irq(&dev_priv->uncore.lock); - forcewake_count = dev_priv->uncore.fw_domain[FW_DOMAIN_ID_RENDER].wake_count; - spin_unlock_irq(&dev_priv->uncore.lock); + int count = 0; + forcewake_count = READ_ONCE(dev_priv->uncore.fw_domain[FW_DOMAIN_ID_RENDER].wake_count); if (forcewake_count) { seq_puts(m, "RC information inaccurate because somebody " "holds a forcewake reference \n"); @@ -1539,13 +1545,11 @@ static int gen6_drpc_info(struct seq_file *m) gen9_powergate_enable = I915_READ(GEN9_PG_ENABLE); gen9_powergate_status = I915_READ(GEN9_PWRGT_DOMAIN_STATUS); } - mutex_unlock(&dev->struct_mutex); + mutex_lock(&dev_priv->rps.hw_lock); sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); mutex_unlock(&dev_priv->rps.hw_lock); - intel_runtime_pm_put(dev_priv); - seq_printf(m, "Video Turbo Mode: %s\n", yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO)); seq_printf(m, "HW control enabled: %s\n", @@ -1601,14 +1605,11 @@ static int gen6_drpc_info(struct seq_file *m) } /* Not exactly sure what this is */ - seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n", - I915_READ(GEN6_GT_GFX_RC6_LOCKED)); - seq_printf(m, "RC6 residency since boot: %u\n", - I915_READ(GEN6_GT_GFX_RC6)); - seq_printf(m, "RC6+ residency since boot: %u\n", - I915_READ(GEN6_GT_GFX_RC6p)); - seq_printf(m, "RC6++ residency since boot: %u\n", - I915_READ(GEN6_GT_GFX_RC6pp)); + print_rc6_res(m, "RC6 \"Locked to RPn\" residency since boot:", + GEN6_GT_GFX_RC6_LOCKED); + print_rc6_res(m, "RC6 residency since boot:", GEN6_GT_GFX_RC6); + print_rc6_res(m, "RC6+ residency since boot:", GEN6_GT_GFX_RC6p); + print_rc6_res(m, "RC6++ residency since boot:", GEN6_GT_GFX_RC6pp); seq_printf(m, "RC6 voltage: %dmV\n", GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff))); @@ -1622,13 +1623,20 @@ static int gen6_drpc_info(struct seq_file *m) static int i915_drpc_info(struct seq_file *m, void *unused) { struct drm_i915_private *dev_priv = node_to_i915(m->private); + int err; + + intel_runtime_pm_get(dev_priv); if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) - return vlv_drpc_info(m); + err = vlv_drpc_info(m); else if (INTEL_GEN(dev_priv) >= 6) - return gen6_drpc_info(m); + err = gen6_drpc_info(m); else - return ironlake_drpc_info(m); + err = ironlake_drpc_info(m); + + intel_runtime_pm_put(dev_priv); + + return err; } static int i915_frontbuffer_tracking(struct seq_file *m, void *unused) @@ -1749,7 +1757,9 @@ static int i915_sr_status(struct seq_file *m, void *unused) intel_runtime_pm_get(dev_priv); intel_display_power_get(dev_priv, POWER_DOMAIN_INIT); - if (HAS_PCH_SPLIT(dev_priv)) + if (INTEL_GEN(dev_priv) >= 9) + /* no global SR status; inspect per-plane WM */; + else if (HAS_PCH_SPLIT(dev_priv)) sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN; else if (IS_I965GM(dev_priv) || IS_G4X(dev_priv) || IS_I945G(dev_priv) || IS_I945GM(dev_priv)) @@ -1814,7 +1824,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused) if (ret) goto out; - if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { + if (IS_GEN9_BC(dev_priv)) { /* Convert GT frequency to 50 HZ units */ min_gpu_freq = dev_priv->rps.min_freq_softlimit / GEN9_FREQ_SCALER; @@ -1834,8 +1844,8 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused) &ia_freq); seq_printf(m, "%d\t\t%d\t\t\t\t%d\n", intel_gpu_freq(dev_priv, (gpu_freq * - (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ? - GEN9_FREQ_SCALER : 1))), + (IS_GEN9_BC(dev_priv) ? + GEN9_FREQ_SCALER : 1))), ((ia_freq >> 0) & 0xff) * 100, ((ia_freq >> 8) & 0xff) * 100); } @@ -1929,9 +1939,8 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data) static void describe_ctx_ring(struct seq_file *m, struct intel_ring *ring) { - seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, last head: %d)", - ring->space, ring->head, ring->tail, - ring->last_retired_head); + seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u)", + ring->space, ring->head, ring->tail); } static int i915_context_status(struct seq_file *m, void *unused) @@ -2328,10 +2337,10 @@ static int i915_rps_boost_info(struct seq_file *m, void *data) seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n", rps_power_to_str(dev_priv->rps.power)); seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n", - 100 * rpup / rpupei, + rpup && rpupei ? 100 * rpup / rpupei : 0, dev_priv->rps.up_threshold); seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n", - 100 * rpdown / rpdownei, + rpdown && rpdownei ? 100 * rpdown / rpdownei : 0, dev_priv->rps.down_threshold); } else { seq_puts(m, "\nRPS Autotuning inactive\n"); @@ -2377,7 +2386,9 @@ static int i915_huc_load_status_info(struct seq_file *m, void *data) seq_printf(m, "\tRSA: offset is %d; size = %d\n", huc_fw->rsa_offset, huc_fw->rsa_size); + intel_runtime_pm_get(dev_priv); seq_printf(m, "\nHuC status 0x%08x:\n", I915_READ(HUC_STATUS2)); + intel_runtime_pm_put(dev_priv); return 0; } @@ -2409,6 +2420,8 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data) seq_printf(m, "\tRSA: offset is %d; size = %d\n", guc_fw->rsa_offset, guc_fw->rsa_size); + intel_runtime_pm_get(dev_priv); + tmp = I915_READ(GUC_STATUS); seq_printf(m, "\nGuC status 0x%08x:\n", tmp); @@ -2422,6 +2435,8 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data) for (i = 0; i < 16; i++) seq_printf(m, "\t%2d: \t0x%x\n", i, I915_READ(SOFT_SCRATCH(i))); + intel_runtime_pm_put(dev_priv); + return 0; } @@ -2459,9 +2474,9 @@ static void i915_guc_client_info(struct seq_file *m, enum intel_engine_id id; uint64_t tot = 0; - seq_printf(m, "\tPriority %d, GuC ctx index: %u, PD offset 0x%x\n", - client->priority, client->ctx_index, client->proc_desc_offset); - seq_printf(m, "\tDoorbell id %d, offset: 0x%x, cookie 0x%x\n", + seq_printf(m, "\tPriority %d, GuC stage index: %u, PD offset 0x%x\n", + client->priority, client->stage_id, client->proc_desc_offset); + seq_printf(m, "\tDoorbell id %d, offset: 0x%lx, cookie 0x%x\n", client->doorbell_id, client->doorbell_offset, client->doorbell_cookie); seq_printf(m, "\tWQ size %d, offset: 0x%x, tail %d\n", client->wq_size, client->wq_offset, client->wq_tail); @@ -2496,7 +2511,7 @@ static int i915_guc_info(struct seq_file *m, void *data) } seq_printf(m, "Doorbell map:\n"); - seq_printf(m, "\t%*pb\n", GUC_MAX_DOORBELLS, guc->doorbell_bitmap); + seq_printf(m, "\t%*pb\n", GUC_NUM_DOORBELLS, guc->doorbell_bitmap); seq_printf(m, "Doorbell next cacheline: 0x%x\n\n", guc->db_cacheline); seq_printf(m, "GuC total action count: %llu\n", guc->action_count); @@ -2703,12 +2718,14 @@ static int i915_sink_crc(struct seq_file *m, void *data) struct drm_i915_private *dev_priv = node_to_i915(m->private); struct drm_device *dev = &dev_priv->drm; struct intel_connector *connector; + struct drm_connector_list_iter conn_iter; struct intel_dp *intel_dp = NULL; int ret; u8 crc[6]; drm_modeset_lock_all(dev); - for_each_intel_connector(dev, connector) { + drm_connector_list_iter_begin(dev, &conn_iter); + for_each_intel_connector_iter(connector, &conn_iter) { struct drm_crtc *crtc; if (!connector->base.state->best_encoder) @@ -2734,6 +2751,7 @@ static int i915_sink_crc(struct seq_file *m, void *data) } ret = -ENODEV; out: + drm_connector_list_iter_end(&conn_iter); drm_modeset_unlock_all(dev); return ret; } @@ -2803,15 +2821,10 @@ static int i915_power_domain_info(struct seq_file *m, void *unused) seq_printf(m, "%-25s %d\n", power_well->name, power_well->count); - for (power_domain = 0; power_domain < POWER_DOMAIN_NUM; - power_domain++) { - if (!(BIT(power_domain) & power_well->domains)) - continue; - + for_each_power_domain(power_domain, power_well->domains) seq_printf(m, " %-23s %d\n", intel_display_power_domain_str(power_domain), power_domains->domain_use_count[power_domain]); - } } mutex_unlock(&power_domains->lock); @@ -3175,9 +3188,9 @@ static int i915_display_info(struct seq_file *m, void *unused) struct drm_device *dev = &dev_priv->drm; struct intel_crtc *crtc; struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; intel_runtime_pm_get(dev_priv); - drm_modeset_lock_all(dev); seq_printf(m, "CRTC info\n"); seq_printf(m, "---------\n"); for_each_intel_crtc(dev, crtc) { @@ -3185,6 +3198,7 @@ static int i915_display_info(struct seq_file *m, void *unused) struct intel_crtc_state *pipe_config; int x, y; + drm_modeset_lock(&crtc->base.mutex, NULL); pipe_config = to_intel_crtc_state(crtc->base.state); seq_printf(m, "CRTC %d: pipe: %c, active=%s, (size=%dx%d), dither=%s, bpp=%d\n", @@ -3209,15 +3223,19 @@ static int i915_display_info(struct seq_file *m, void *unused) seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s \n", yesno(!crtc->cpu_fifo_underrun_disabled), yesno(!crtc->pch_fifo_underrun_disabled)); + drm_modeset_unlock(&crtc->base.mutex); } seq_printf(m, "\n"); seq_printf(m, "Connector info\n"); seq_printf(m, "--------------\n"); - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + mutex_lock(&dev->mode_config.mutex); + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) intel_connector_info(m, connector); - } - drm_modeset_unlock_all(dev); + drm_connector_list_iter_end(&conn_iter); + mutex_unlock(&dev->mode_config.mutex); + intel_runtime_pm_put(dev_priv); return 0; @@ -3231,6 +3249,11 @@ static int i915_engine_info(struct seq_file *m, void *unused) intel_runtime_pm_get(dev_priv); + seq_printf(m, "GT awake? %s\n", + yesno(dev_priv->gt.awake)); + seq_printf(m, "Global active requests: %d\n", + dev_priv->gt.active_requests); + for_each_engine(engine, dev_priv, id) { struct intel_breadcrumbs *b = &engine->breadcrumbs; struct drm_i915_gem_request *rq; @@ -3238,11 +3261,12 @@ static int i915_engine_info(struct seq_file *m, void *unused) u64 addr; seq_printf(m, "%s\n", engine->name); - seq_printf(m, "\tcurrent seqno %x, last %x, hangcheck %x [%d ms]\n", + seq_printf(m, "\tcurrent seqno %x, last %x, hangcheck %x [%d ms], inflight %d\n", intel_engine_get_seqno(engine), intel_engine_last_submit(engine), engine->hangcheck.seqno, - jiffies_to_msecs(jiffies - engine->hangcheck.action_timestamp)); + jiffies_to_msecs(jiffies - engine->hangcheck.action_timestamp), + engine->timeline->inflight_seqnos); rcu_read_lock(); @@ -3320,15 +3344,21 @@ static int i915_engine_info(struct seq_file *m, void *unused) rcu_read_lock(); rq = READ_ONCE(engine->execlist_port[0].request); - if (rq) - print_request(m, rq, "\t\tELSP[0] "); - else + if (rq) { + seq_printf(m, "\t\tELSP[0] count=%d, ", + engine->execlist_port[0].count); + print_request(m, rq, "rq: "); + } else { seq_printf(m, "\t\tELSP[0] idle\n"); + } rq = READ_ONCE(engine->execlist_port[1].request); - if (rq) - print_request(m, rq, "\t\tELSP[1] "); - else + if (rq) { + seq_printf(m, "\t\tELSP[1] count=%d, ", + engine->execlist_port[1].count); + print_request(m, rq, "rq: "); + } else { seq_printf(m, "\t\tELSP[1] idle\n"); + } rcu_read_unlock(); spin_lock_irq(&engine->timeline->lock); @@ -3346,14 +3376,14 @@ static int i915_engine_info(struct seq_file *m, void *unused) I915_READ(RING_PP_DIR_DCLV(engine))); } - spin_lock_irq(&b->lock); + spin_lock_irq(&b->rb_lock); for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) { struct intel_wait *w = rb_entry(rb, typeof(*w), node); seq_printf(m, "\t%s [%d] waiting for %x\n", w->tsk->comm, w->tsk->pid, w->seqno); } - spin_unlock_irq(&b->lock); + spin_unlock_irq(&b->rb_lock); seq_puts(m, "\n"); } @@ -3538,13 +3568,16 @@ static void drrs_status_per_crtc(struct seq_file *m, struct i915_drrs *drrs = &dev_priv->drrs; int vrefresh = 0; struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; - drm_for_each_connector(connector, dev) { + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { if (connector->state->crtc != &intel_crtc->base) continue; seq_printf(m, "%s:\n", connector->name); } + drm_connector_list_iter_end(&conn_iter); if (dev_priv->vbt.drrs_type == STATIC_DRRS_SUPPORT) seq_puts(m, "\tVBT: DRRS_type: Static"); @@ -3630,9 +3663,10 @@ static int i915_dp_mst_info(struct seq_file *m, void *unused) struct intel_encoder *intel_encoder; struct intel_digital_port *intel_dig_port; struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; - drm_modeset_lock_all(dev); - drm_for_each_connector(connector, dev) { + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) continue; @@ -3648,7 +3682,8 @@ static int i915_dp_mst_info(struct seq_file *m, void *unused) port_name(intel_dig_port->port)); drm_dp_mst_dump_topology(m, &intel_dig_port->dp.mst_mgr); } - drm_modeset_unlock_all(dev); + drm_connector_list_iter_end(&conn_iter); + return 0; } @@ -3660,14 +3695,12 @@ static ssize_t i915_displayport_test_active_write(struct file *file, int status = 0; struct drm_device *dev; struct drm_connector *connector; - struct list_head *connector_list; + struct drm_connector_list_iter conn_iter; struct intel_dp *intel_dp; int val = 0; dev = ((struct seq_file *)file->private_data)->private; - connector_list = &dev->mode_config.connector_list; - if (len == 0) return 0; @@ -3683,7 +3716,8 @@ static ssize_t i915_displayport_test_active_write(struct file *file, input_buffer[len] = '\0'; DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len); - list_for_each_entry(connector, connector_list, head) { + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) continue; @@ -3693,7 +3727,7 @@ static ssize_t i915_displayport_test_active_write(struct file *file, intel_dp = enc_to_intel_dp(connector->encoder); status = kstrtoint(input_buffer, 10, &val); if (status < 0) - goto out; + break; DRM_DEBUG_DRIVER("Got %d for test active\n", val); /* To prevent erroneous activation of the compliance * testing code, only accept an actual value of 1 here @@ -3704,6 +3738,7 @@ static ssize_t i915_displayport_test_active_write(struct file *file, intel_dp->compliance.test_active = 0; } } + drm_connector_list_iter_end(&conn_iter); out: kfree(input_buffer); if (status < 0) @@ -3717,10 +3752,11 @@ static int i915_displayport_test_active_show(struct seq_file *m, void *data) { struct drm_device *dev = m->private; struct drm_connector *connector; - struct list_head *connector_list = &dev->mode_config.connector_list; + struct drm_connector_list_iter conn_iter; struct intel_dp *intel_dp; - list_for_each_entry(connector, connector_list, head) { + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) continue; @@ -3735,6 +3771,7 @@ static int i915_displayport_test_active_show(struct seq_file *m, void *data) } else seq_puts(m, "0"); } + drm_connector_list_iter_end(&conn_iter); return 0; } @@ -3761,10 +3798,11 @@ static int i915_displayport_test_data_show(struct seq_file *m, void *data) { struct drm_device *dev = m->private; struct drm_connector *connector; - struct list_head *connector_list = &dev->mode_config.connector_list; + struct drm_connector_list_iter conn_iter; struct intel_dp *intel_dp; - list_for_each_entry(connector, connector_list, head) { + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) continue; @@ -3772,10 +3810,23 @@ static int i915_displayport_test_data_show(struct seq_file *m, void *data) if (connector->status == connector_status_connected && connector->encoder != NULL) { intel_dp = enc_to_intel_dp(connector->encoder); - seq_printf(m, "%lx", intel_dp->compliance.test_data.edid); + if (intel_dp->compliance.test_type == + DP_TEST_LINK_EDID_READ) + seq_printf(m, "%lx", + intel_dp->compliance.test_data.edid); + else if (intel_dp->compliance.test_type == + DP_TEST_LINK_VIDEO_PATTERN) { + seq_printf(m, "hdisplay: %d\n", + intel_dp->compliance.test_data.hdisplay); + seq_printf(m, "vdisplay: %d\n", + intel_dp->compliance.test_data.vdisplay); + seq_printf(m, "bpc: %u\n", + intel_dp->compliance.test_data.bpc); + } } else seq_puts(m, "0"); } + drm_connector_list_iter_end(&conn_iter); return 0; } @@ -3800,10 +3851,11 @@ static int i915_displayport_test_type_show(struct seq_file *m, void *data) { struct drm_device *dev = m->private; struct drm_connector *connector; - struct list_head *connector_list = &dev->mode_config.connector_list; + struct drm_connector_list_iter conn_iter; struct intel_dp *intel_dp; - list_for_each_entry(connector, connector_list, head) { + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) continue; @@ -3815,6 +3867,7 @@ static int i915_displayport_test_type_show(struct seq_file *m, void *data) } else seq_puts(m, "0"); } + drm_connector_list_iter_end(&conn_iter); return 0; } @@ -4076,7 +4129,9 @@ i915_wedged_get(void *data, u64 *val) static int i915_wedged_set(void *data, u64 val) { - struct drm_i915_private *dev_priv = data; + struct drm_i915_private *i915 = data; + struct intel_engine_cs *engine; + unsigned int tmp; /* * There is no safeguard against this debugfs entry colliding @@ -4086,11 +4141,19 @@ i915_wedged_set(void *data, u64 val) * while it is writing to 'i915_wedged' */ - if (i915_reset_in_progress(&dev_priv->gpu_error)) + if (i915_reset_backoff(&i915->gpu_error)) return -EAGAIN; - i915_handle_error(dev_priv, val, - "Manually setting wedged to %llu", val); + for_each_engine_masked(engine, i915, val, tmp) { + engine->hangcheck.seqno = intel_engine_get_seqno(engine); + engine->hangcheck.stalled = true; + } + + i915_handle_error(i915, val, "Manually setting wedged to %llu", val); + + wait_on_bit(&i915->gpu_error.flags, + I915_RESET_HANDOFF, + TASK_UNINTERRUPTIBLE); return 0; } @@ -4100,6 +4163,37 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops, "%llu\n"); static int +fault_irq_set(struct drm_i915_private *i915, + unsigned long *irq, + unsigned long val) +{ + int err; + + err = mutex_lock_interruptible(&i915->drm.struct_mutex); + if (err) + return err; + + err = i915_gem_wait_for_idle(i915, + I915_WAIT_LOCKED | + I915_WAIT_INTERRUPTIBLE); + if (err) + goto err_unlock; + + *irq = val; + mutex_unlock(&i915->drm.struct_mutex); + + /* Flush idle worker to disarm irq */ + while (flush_delayed_work(&i915->gt.idle_work)) + ; + + return 0; + +err_unlock: + mutex_unlock(&i915->drm.struct_mutex); + return err; +} + +static int i915_ring_missed_irq_get(void *data, u64 *val) { struct drm_i915_private *dev_priv = data; @@ -4111,18 +4205,9 @@ i915_ring_missed_irq_get(void *data, u64 *val) static int i915_ring_missed_irq_set(void *data, u64 val) { - struct drm_i915_private *dev_priv = data; - struct drm_device *dev = &dev_priv->drm; - int ret; + struct drm_i915_private *i915 = data; - /* Lock against concurrent debugfs callers */ - ret = mutex_lock_interruptible(&dev->struct_mutex); - if (ret) - return ret; - dev_priv->gpu_error.missed_irq_rings = val; - mutex_unlock(&dev->struct_mutex); - - return 0; + return fault_irq_set(i915, &i915->gpu_error.missed_irq_rings, val); } DEFINE_SIMPLE_ATTRIBUTE(i915_ring_missed_irq_fops, @@ -4142,13 +4227,12 @@ i915_ring_test_irq_get(void *data, u64 *val) static int i915_ring_test_irq_set(void *data, u64 val) { - struct drm_i915_private *dev_priv = data; + struct drm_i915_private *i915 = data; - val &= INTEL_INFO(dev_priv)->ring_mask; + val &= INTEL_INFO(i915)->ring_mask; DRM_DEBUG_DRIVER("Masking interrupts on rings 0x%08llx\n", val); - dev_priv->gpu_error.test_irq_rings = val; - return 0; + return fault_irq_set(i915, &i915->gpu_error.test_irq_rings, val); } DEFINE_SIMPLE_ATTRIBUTE(i915_ring_test_irq_fops, @@ -4160,11 +4244,13 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_ring_test_irq_fops, #define DROP_RETIRE 0x4 #define DROP_ACTIVE 0x8 #define DROP_FREED 0x10 +#define DROP_SHRINK_ALL 0x20 #define DROP_ALL (DROP_UNBOUND | \ DROP_BOUND | \ DROP_RETIRE | \ DROP_ACTIVE | \ - DROP_FREED) + DROP_FREED | \ + DROP_SHRINK_ALL) static int i915_drop_caches_get(void *data, u64 *val) { @@ -4196,15 +4282,20 @@ i915_drop_caches_set(void *data, u64 val) goto unlock; } - if (val & (DROP_RETIRE | DROP_ACTIVE)) + if (val & DROP_RETIRE) i915_gem_retire_requests(dev_priv); + lockdep_set_current_reclaim_state(GFP_KERNEL); if (val & DROP_BOUND) i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_BOUND); if (val & DROP_UNBOUND) i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_UNBOUND); + if (val & DROP_SHRINK_ALL) + i915_gem_shrink_all(dev_priv); + lockdep_clear_current_reclaim_state(); + unlock: mutex_unlock(&dev->struct_mutex); @@ -4263,7 +4354,8 @@ i915_max_freq_set(void *data, u64 val) dev_priv->rps.max_freq_softlimit = val; - intel_set_rps(dev_priv, val); + if (intel_set_rps(dev_priv, val)) + DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n"); mutex_unlock(&dev_priv->rps.hw_lock); @@ -4318,7 +4410,8 @@ i915_min_freq_set(void *data, u64 val) dev_priv->rps.min_freq_softlimit = val; - intel_set_rps(dev_priv, val); + if (intel_set_rps(dev_priv, val)) + DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n"); mutex_unlock(&dev_priv->rps.hw_lock); @@ -4444,7 +4537,7 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv, sseu->slice_mask |= BIT(s); - if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) + if (IS_GEN9_BC(dev_priv)) sseu->subslice_mask = INTEL_INFO(dev_priv)->sseu.subslice_mask; @@ -4593,37 +4686,81 @@ static const struct file_operations i915_forcewake_fops = { .release = i915_forcewake_release, }; -static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor) +static int i915_hpd_storm_ctl_show(struct seq_file *m, void *data) { - struct dentry *ent; + struct drm_i915_private *dev_priv = m->private; + struct i915_hotplug *hotplug = &dev_priv->hotplug; - ent = debugfs_create_file("i915_forcewake_user", - S_IRUSR, - root, to_i915(minor->dev), - &i915_forcewake_fops); - if (!ent) - return -ENOMEM; + seq_printf(m, "Threshold: %d\n", hotplug->hpd_storm_threshold); + seq_printf(m, "Detected: %s\n", + yesno(delayed_work_pending(&hotplug->reenable_work))); - return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops); + return 0; } -static int i915_debugfs_create(struct dentry *root, - struct drm_minor *minor, - const char *name, - const struct file_operations *fops) +static ssize_t i915_hpd_storm_ctl_write(struct file *file, + const char __user *ubuf, size_t len, + loff_t *offp) { - struct dentry *ent; + struct seq_file *m = file->private_data; + struct drm_i915_private *dev_priv = m->private; + struct i915_hotplug *hotplug = &dev_priv->hotplug; + unsigned int new_threshold; + int i; + char *newline; + char tmp[16]; - ent = debugfs_create_file(name, - S_IRUGO | S_IWUSR, - root, to_i915(minor->dev), - fops); - if (!ent) - return -ENOMEM; + if (len >= sizeof(tmp)) + return -EINVAL; + + if (copy_from_user(tmp, ubuf, len)) + return -EFAULT; + + tmp[len] = '\0'; + + /* Strip newline, if any */ + newline = strchr(tmp, '\n'); + if (newline) + *newline = '\0'; + + if (strcmp(tmp, "reset") == 0) + new_threshold = HPD_STORM_DEFAULT_THRESHOLD; + else if (kstrtouint(tmp, 10, &new_threshold) != 0) + return -EINVAL; + + if (new_threshold > 0) + DRM_DEBUG_KMS("Setting HPD storm detection threshold to %d\n", + new_threshold); + else + DRM_DEBUG_KMS("Disabling HPD storm detection\n"); + + spin_lock_irq(&dev_priv->irq_lock); + hotplug->hpd_storm_threshold = new_threshold; + /* Reset the HPD storm stats so we don't accidentally trigger a storm */ + for_each_hpd_pin(i) + hotplug->stats[i].count = 0; + spin_unlock_irq(&dev_priv->irq_lock); + + /* Re-enable hpd immediately if we were in an irq storm */ + flush_delayed_work(&dev_priv->hotplug.reenable_work); + + return len; +} - return drm_add_fake_info_node(minor, ent, fops); +static int i915_hpd_storm_ctl_open(struct inode *inode, struct file *file) +{ + return single_open(file, i915_hpd_storm_ctl_show, inode->i_private); } +static const struct file_operations i915_hpd_storm_ctl_fops = { + .owner = THIS_MODULE, + .open = i915_hpd_storm_ctl_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_hpd_storm_ctl_write +}; + static const struct drm_info_list i915_debugfs_list[] = { {"i915_capabilities", i915_capabilities, 0}, {"i915_gem_objects", i915_gem_object_info, 0}, @@ -4690,6 +4827,7 @@ static const struct i915_debugfs_files { {"i915_gem_drop_caches", &i915_drop_caches_fops}, #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) {"i915_error_state", &i915_error_state_fops}, + {"i915_gpu_info", &i915_gpu_info_fops}, #endif {"i915_next_seqno", &i915_next_seqno_fops}, {"i915_display_crc_ctl", &i915_display_crc_ctl_fops}, @@ -4700,28 +4838,34 @@ static const struct i915_debugfs_files { {"i915_dp_test_data", &i915_displayport_test_data_fops}, {"i915_dp_test_type", &i915_displayport_test_type_fops}, {"i915_dp_test_active", &i915_displayport_test_active_fops}, - {"i915_guc_log_control", &i915_guc_log_control_fops} + {"i915_guc_log_control", &i915_guc_log_control_fops}, + {"i915_hpd_storm_ctl", &i915_hpd_storm_ctl_fops} }; int i915_debugfs_register(struct drm_i915_private *dev_priv) { struct drm_minor *minor = dev_priv->drm.primary; + struct dentry *ent; int ret, i; - ret = i915_forcewake_create(minor->debugfs_root, minor); - if (ret) - return ret; + ent = debugfs_create_file("i915_forcewake_user", S_IRUSR, + minor->debugfs_root, to_i915(minor->dev), + &i915_forcewake_fops); + if (!ent) + return -ENOMEM; ret = intel_pipe_crc_create(minor); if (ret) return ret; for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) { - ret = i915_debugfs_create(minor->debugfs_root, minor, - i915_debugfs_files[i].name, + ent = debugfs_create_file(i915_debugfs_files[i].name, + S_IRUGO | S_IWUSR, + minor->debugfs_root, + to_i915(minor->dev), i915_debugfs_files[i].fops); - if (ret) - return ret; + if (!ent) + return -ENOMEM; } return drm_debugfs_create_files(i915_debugfs_list, @@ -4729,27 +4873,6 @@ int i915_debugfs_register(struct drm_i915_private *dev_priv) minor->debugfs_root, minor); } -void i915_debugfs_unregister(struct drm_i915_private *dev_priv) -{ - struct drm_minor *minor = dev_priv->drm.primary; - int i; - - drm_debugfs_remove_files(i915_debugfs_list, - I915_DEBUGFS_ENTRIES, minor); - - drm_debugfs_remove_files((struct drm_info_list *)&i915_forcewake_fops, - 1, minor); - - intel_pipe_crc_cleanup(minor); - - for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) { - struct drm_info_list *info_list = - (struct drm_info_list *)i915_debugfs_files[i].fops; - - drm_debugfs_remove_files(info_list, 1, minor); - } -} - struct dpcd_block { /* DPCD dump start address. */ unsigned int offset; |