diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_reset.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_reset.c | 633 |
1 files changed, 225 insertions, 408 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c index 3f907701ef4d..b9d84d52e986 100644 --- a/drivers/gpu/drm/i915/gt/intel_reset.c +++ b/drivers/gpu/drm/i915/gt/intel_reset.c @@ -7,6 +7,7 @@ #include <linux/sched/mm.h> #include <linux/stop_machine.h> +#include "display/intel_display_types.h" #include "display/intel_overlay.h" #include "gem/i915_gem_context.h" @@ -15,26 +16,17 @@ #include "i915_gpu_error.h" #include "i915_irq.h" #include "intel_engine_pm.h" +#include "intel_gt.h" #include "intel_gt_pm.h" #include "intel_reset.h" -#include "intel_guc.h" +#include "uc/intel_guc.h" #define RESET_MAX_RETRIES 3 /* XXX How to handle concurrent GGTT updates using tiling registers? */ #define RESET_UNDER_STOP_MACHINE 0 -static void rmw_set(struct intel_uncore *uncore, i915_reg_t reg, u32 set) -{ - intel_uncore_rmw(uncore, reg, 0, set); -} - -static void rmw_clear(struct intel_uncore *uncore, i915_reg_t reg, u32 clr) -{ - intel_uncore_rmw(uncore, reg, clr, 0); -} - static void rmw_set_fw(struct intel_uncore *uncore, i915_reg_t reg, u32 set) { intel_uncore_rmw_fw(uncore, reg, 0, set); @@ -123,7 +115,7 @@ static void context_mark_innocent(struct i915_gem_context *ctx) atomic_inc(&ctx->active_count); } -void i915_reset_request(struct i915_request *rq, bool guilty) +void __i915_request_reset(struct i915_request *rq, bool guilty) { GEM_TRACE("%s rq=%llx:%lld, guilty? %s\n", rq->engine->name, @@ -144,48 +136,6 @@ void i915_reset_request(struct i915_request *rq, bool guilty) } } -static void gen3_stop_engine(struct intel_engine_cs *engine) -{ - struct intel_uncore *uncore = engine->uncore; - const u32 base = engine->mmio_base; - - GEM_TRACE("%s\n", engine->name); - - if (intel_engine_stop_cs(engine)) - GEM_TRACE("%s: timed out on STOP_RING\n", engine->name); - - intel_uncore_write_fw(uncore, - RING_HEAD(base), - intel_uncore_read_fw(uncore, RING_TAIL(base))); - intel_uncore_posting_read_fw(uncore, RING_HEAD(base)); /* paranoia */ - - intel_uncore_write_fw(uncore, RING_HEAD(base), 0); - intel_uncore_write_fw(uncore, RING_TAIL(base), 0); - intel_uncore_posting_read_fw(uncore, RING_TAIL(base)); - - /* The ring must be empty before it is disabled */ - intel_uncore_write_fw(uncore, RING_CTL(base), 0); - - /* Check acts as a post */ - if (intel_uncore_read_fw(uncore, RING_HEAD(base))) - GEM_TRACE("%s: ring head [%x] not parked\n", - engine->name, - intel_uncore_read_fw(uncore, RING_HEAD(base))); -} - -static void i915_stop_engines(struct drm_i915_private *i915, - intel_engine_mask_t engine_mask) -{ - struct intel_engine_cs *engine; - intel_engine_mask_t tmp; - - if (INTEL_GEN(i915) < 3) - return; - - for_each_engine_masked(engine, i915, engine_mask, tmp) - gen3_stop_engine(engine); -} - static bool i915_in_reset(struct pci_dev *pdev) { u8 gdrst; @@ -194,11 +144,11 @@ static bool i915_in_reset(struct pci_dev *pdev) return gdrst & GRDOM_RESET_STATUS; } -static int i915_do_reset(struct drm_i915_private *i915, +static int i915_do_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { - struct pci_dev *pdev = i915->drm.pdev; + struct pci_dev *pdev = gt->i915->drm.pdev; int err; /* Assert reset for at least 20 usec, and wait for acknowledgement. */ @@ -223,22 +173,22 @@ static bool g4x_reset_complete(struct pci_dev *pdev) return (gdrst & GRDOM_RESET_ENABLE) == 0; } -static int g33_do_reset(struct drm_i915_private *i915, +static int g33_do_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { - struct pci_dev *pdev = i915->drm.pdev; + struct pci_dev *pdev = gt->i915->drm.pdev; pci_write_config_byte(pdev, I915_GDRST, GRDOM_RESET_ENABLE); return wait_for_atomic(g4x_reset_complete(pdev), 50); } -static int g4x_do_reset(struct drm_i915_private *i915, +static int g4x_do_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { - struct pci_dev *pdev = i915->drm.pdev; - struct intel_uncore *uncore = &i915->uncore; + struct pci_dev *pdev = gt->i915->drm.pdev; + struct intel_uncore *uncore = gt->uncore; int ret; /* WaVcpClkGateDisableForMediaReset:ctg,elk */ @@ -270,11 +220,11 @@ out: return ret; } -static int ironlake_do_reset(struct drm_i915_private *i915, +static int ironlake_do_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { - struct intel_uncore *uncore = &i915->uncore; + struct intel_uncore *uncore = gt->uncore; int ret; intel_uncore_write_fw(uncore, ILK_GDSR, @@ -306,10 +256,9 @@ out: } /* Reset the hardware domains (GENX_GRDOM_*) specified by mask */ -static int gen6_hw_domain_reset(struct drm_i915_private *i915, - u32 hw_domain_mask) +static int gen6_hw_domain_reset(struct intel_gt *gt, u32 hw_domain_mask) { - struct intel_uncore *uncore = &i915->uncore; + struct intel_uncore *uncore = gt->uncore; int err; /* @@ -331,7 +280,7 @@ static int gen6_hw_domain_reset(struct drm_i915_private *i915, return err; } -static int gen6_reset_engines(struct drm_i915_private *i915, +static int gen6_reset_engines(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { @@ -351,13 +300,13 @@ static int gen6_reset_engines(struct drm_i915_private *i915, intel_engine_mask_t tmp; hw_mask = 0; - for_each_engine_masked(engine, i915, engine_mask, tmp) { + for_each_engine_masked(engine, gt->i915, engine_mask, tmp) { GEM_BUG_ON(engine->id >= ARRAY_SIZE(hw_engine_mask)); hw_mask |= hw_engine_mask[engine->id]; } } - return gen6_hw_domain_reset(i915, hw_mask); + return gen6_hw_domain_reset(gt, hw_mask); } static u32 gen11_lock_sfc(struct intel_engine_cs *engine) @@ -455,7 +404,7 @@ static void gen11_unlock_sfc(struct intel_engine_cs *engine) rmw_clear_fw(uncore, sfc_forced_lock, sfc_forced_lock_bit); } -static int gen11_reset_engines(struct drm_i915_private *i915, +static int gen11_reset_engines(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { @@ -478,17 +427,17 @@ static int gen11_reset_engines(struct drm_i915_private *i915, hw_mask = GEN11_GRDOM_FULL; } else { hw_mask = 0; - for_each_engine_masked(engine, i915, engine_mask, tmp) { + for_each_engine_masked(engine, gt->i915, engine_mask, tmp) { GEM_BUG_ON(engine->id >= ARRAY_SIZE(hw_engine_mask)); hw_mask |= hw_engine_mask[engine->id]; hw_mask |= gen11_lock_sfc(engine); } } - ret = gen6_hw_domain_reset(i915, hw_mask); + ret = gen6_hw_domain_reset(gt, hw_mask); if (engine_mask != ALL_ENGINES) - for_each_engine_masked(engine, i915, engine_mask, tmp) + for_each_engine_masked(engine, gt->i915, engine_mask, tmp) gen11_unlock_sfc(engine); return ret; @@ -538,7 +487,7 @@ static void gen8_engine_reset_cancel(struct intel_engine_cs *engine) _MASKED_BIT_DISABLE(RESET_CTL_REQUEST_RESET)); } -static int gen8_reset_engines(struct drm_i915_private *i915, +static int gen8_reset_engines(struct intel_gt *gt, intel_engine_mask_t engine_mask, unsigned int retry) { @@ -547,7 +496,7 @@ static int gen8_reset_engines(struct drm_i915_private *i915, intel_engine_mask_t tmp; int ret; - for_each_engine_masked(engine, i915, engine_mask, tmp) { + for_each_engine_masked(engine, gt->i915, engine_mask, tmp) { ret = gen8_engine_reset_prepare(engine); if (ret && !reset_non_ready) goto skip_reset; @@ -563,23 +512,23 @@ static int gen8_reset_engines(struct drm_i915_private *i915, * We rather take context corruption instead of * failed reset with a wedged driver/gpu. And * active bb execution case should be covered by - * i915_stop_engines we have before the reset. + * stop_engines() we have before the reset. */ } - if (INTEL_GEN(i915) >= 11) - ret = gen11_reset_engines(i915, engine_mask, retry); + if (INTEL_GEN(gt->i915) >= 11) + ret = gen11_reset_engines(gt, engine_mask, retry); else - ret = gen6_reset_engines(i915, engine_mask, retry); + ret = gen6_reset_engines(gt, engine_mask, retry); skip_reset: - for_each_engine_masked(engine, i915, engine_mask, tmp) + for_each_engine_masked(engine, gt->i915, engine_mask, tmp) gen8_engine_reset_cancel(engine); return ret; } -typedef int (*reset_func)(struct drm_i915_private *, +typedef int (*reset_func)(struct intel_gt *, intel_engine_mask_t engine_mask, unsigned int retry); @@ -601,15 +550,14 @@ static reset_func intel_get_gpu_reset(struct drm_i915_private *i915) return NULL; } -int intel_gpu_reset(struct drm_i915_private *i915, - intel_engine_mask_t engine_mask) +int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask) { const int retries = engine_mask == ALL_ENGINES ? RESET_MAX_RETRIES : 1; reset_func reset; int ret = -ETIMEDOUT; int retry; - reset = intel_get_gpu_reset(i915); + reset = intel_get_gpu_reset(gt->i915); if (!reset) return -ENODEV; @@ -617,31 +565,14 @@ int intel_gpu_reset(struct drm_i915_private *i915, * If the power well sleeps during the reset, the reset * request may be dropped and never completes (causing -EIO). */ - intel_uncore_forcewake_get(&i915->uncore, FORCEWAKE_ALL); + intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL); for (retry = 0; ret == -ETIMEDOUT && retry < retries; retry++) { - /* - * We stop engines, otherwise we might get failed reset and a - * dead gpu (on elk). Also as modern gpu as kbl can suffer - * from system hang if batchbuffer is progressing when - * the reset is issued, regardless of READY_TO_RESET ack. - * Thus assume it is best to stop engines on all gens - * where we have a gpu reset. - * - * WaKBLVECSSemaphoreWaitPoll:kbl (on ALL_ENGINES) - * - * WaMediaResetMainRingCleanup:ctg,elk (presumably) - * - * FIXME: Wa for more modern gens needs to be validated - */ - if (retry) - i915_stop_engines(i915, engine_mask); - GEM_TRACE("engine_mask=%x\n", engine_mask); preempt_disable(); - ret = reset(i915, engine_mask, retry); + ret = reset(gt, engine_mask, retry); preempt_enable(); } - intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL); + intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL); return ret; } @@ -659,17 +590,17 @@ bool intel_has_reset_engine(struct drm_i915_private *i915) return INTEL_INFO(i915)->has_reset_engine && i915_modparams.reset >= 2; } -int intel_reset_guc(struct drm_i915_private *i915) +int intel_reset_guc(struct intel_gt *gt) { u32 guc_domain = - INTEL_GEN(i915) >= 11 ? GEN11_GRDOM_GUC : GEN9_GRDOM_GUC; + INTEL_GEN(gt->i915) >= 11 ? GEN11_GRDOM_GUC : GEN9_GRDOM_GUC; int ret; - GEM_BUG_ON(!HAS_GUC(i915)); + GEM_BUG_ON(!HAS_GT_UC(gt->i915)); - intel_uncore_forcewake_get(&i915->uncore, FORCEWAKE_ALL); - ret = gen6_hw_domain_reset(i915, guc_domain); - intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL); + intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL); + ret = gen6_hw_domain_reset(gt, guc_domain); + intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL); return ret; } @@ -691,56 +622,55 @@ static void reset_prepare_engine(struct intel_engine_cs *engine) engine->reset.prepare(engine); } -static void revoke_mmaps(struct drm_i915_private *i915) +static void revoke_mmaps(struct intel_gt *gt) { int i; - for (i = 0; i < i915->ggtt.num_fences; i++) { + for (i = 0; i < gt->ggtt->num_fences; i++) { struct drm_vma_offset_node *node; struct i915_vma *vma; u64 vma_offset; - vma = READ_ONCE(i915->ggtt.fence_regs[i].vma); + vma = READ_ONCE(gt->ggtt->fence_regs[i].vma); if (!vma) continue; if (!i915_vma_has_userfault(vma)) continue; - GEM_BUG_ON(vma->fence != &i915->ggtt.fence_regs[i]); + GEM_BUG_ON(vma->fence != >->ggtt->fence_regs[i]); node = &vma->obj->base.vma_node; vma_offset = vma->ggtt_view.partial.offset << PAGE_SHIFT; - unmap_mapping_range(i915->drm.anon_inode->i_mapping, + unmap_mapping_range(gt->i915->drm.anon_inode->i_mapping, drm_vma_node_offset_addr(node) + vma_offset, vma->size, 1); } } -static intel_engine_mask_t reset_prepare(struct drm_i915_private *i915) +static intel_engine_mask_t reset_prepare(struct intel_gt *gt) { struct intel_engine_cs *engine; intel_engine_mask_t awake = 0; enum intel_engine_id id; - for_each_engine(engine, i915, id) { + for_each_engine(engine, gt->i915, id) { if (intel_engine_pm_get_if_awake(engine)) awake |= engine->mask; reset_prepare_engine(engine); } - intel_uc_reset_prepare(i915); + intel_uc_reset_prepare(>->uc); return awake; } -static void gt_revoke(struct drm_i915_private *i915) +static void gt_revoke(struct intel_gt *gt) { - revoke_mmaps(i915); + revoke_mmaps(gt); } -static int gt_reset(struct drm_i915_private *i915, - intel_engine_mask_t stalled_mask) +static int gt_reset(struct intel_gt *gt, intel_engine_mask_t stalled_mask) { struct intel_engine_cs *engine; enum intel_engine_id id; @@ -750,14 +680,14 @@ static int gt_reset(struct drm_i915_private *i915, * Everything depends on having the GTT running, so we need to start * there. */ - err = i915_ggtt_enable_hw(i915); + err = i915_ggtt_enable_hw(gt->i915); if (err) return err; - for_each_engine(engine, i915, id) - intel_engine_reset(engine, stalled_mask & engine->mask); + for_each_engine(engine, gt->i915, id) + __intel_engine_reset(engine, stalled_mask & engine->mask); - i915_gem_restore_fences(i915); + i915_gem_restore_fences(gt->i915); return err; } @@ -770,13 +700,12 @@ static void reset_finish_engine(struct intel_engine_cs *engine) intel_engine_signal_breadcrumbs(engine); } -static void reset_finish(struct drm_i915_private *i915, - intel_engine_mask_t awake) +static void reset_finish(struct intel_gt *gt, intel_engine_mask_t awake) { struct intel_engine_cs *engine; enum intel_engine_id id; - for_each_engine(engine, i915, id) { + for_each_engine(engine, gt->i915, id) { reset_finish_engine(engine); if (awake & engine->mask) intel_engine_pm_put(engine); @@ -800,20 +729,19 @@ static void nop_submit_request(struct i915_request *request) intel_engine_queue_breadcrumbs(engine); } -static void __i915_gem_set_wedged(struct drm_i915_private *i915) +static void __intel_gt_set_wedged(struct intel_gt *gt) { - struct i915_gpu_error *error = &i915->gpu_error; struct intel_engine_cs *engine; intel_engine_mask_t awake; enum intel_engine_id id; - if (test_bit(I915_WEDGED, &error->flags)) + if (test_bit(I915_WEDGED, >->reset.flags)) return; - if (GEM_SHOW_DEBUG() && !intel_engines_are_idle(i915)) { + if (GEM_SHOW_DEBUG() && !intel_engines_are_idle(gt)) { struct drm_printer p = drm_debug_printer(__func__); - for_each_engine(engine, i915, id) + for_each_engine(engine, gt->i915, id) intel_engine_dump(engine, &p, "%s\n", engine->name); } @@ -824,17 +752,14 @@ static void __i915_gem_set_wedged(struct drm_i915_private *i915) * rolling the global seqno forward (since this would complete requests * for which we haven't set the fence error to EIO yet). */ - awake = reset_prepare(i915); + awake = reset_prepare(gt); /* Even if the GPU reset fails, it should still stop the engines */ - if (!INTEL_INFO(i915)->gpu_reset_clobbers_display) - intel_gpu_reset(i915, ALL_ENGINES); + if (!INTEL_INFO(gt->i915)->gpu_reset_clobbers_display) + __intel_gt_reset(gt, ALL_ENGINES); - for_each_engine(engine, i915, id) { + for_each_engine(engine, gt->i915, id) engine->submit_request = nop_submit_request; - engine->schedule = NULL; - } - i915->caps.scheduler = 0; /* * Make sure no request can slip through without getting completed by @@ -842,37 +767,37 @@ static void __i915_gem_set_wedged(struct drm_i915_private *i915) * in nop_submit_request. */ synchronize_rcu_expedited(); - set_bit(I915_WEDGED, &error->flags); + set_bit(I915_WEDGED, >->reset.flags); /* Mark all executing requests as skipped */ - for_each_engine(engine, i915, id) + for_each_engine(engine, gt->i915, id) engine->cancel_requests(engine); - reset_finish(i915, awake); + reset_finish(gt, awake); GEM_TRACE("end\n"); } -void i915_gem_set_wedged(struct drm_i915_private *i915) +void intel_gt_set_wedged(struct intel_gt *gt) { - struct i915_gpu_error *error = &i915->gpu_error; intel_wakeref_t wakeref; - mutex_lock(&error->wedge_mutex); - with_intel_runtime_pm(&i915->runtime_pm, wakeref) - __i915_gem_set_wedged(i915); - mutex_unlock(&error->wedge_mutex); + mutex_lock(>->reset.mutex); + with_intel_runtime_pm(>->i915->runtime_pm, wakeref) + __intel_gt_set_wedged(gt); + mutex_unlock(>->reset.mutex); } -static bool __i915_gem_unset_wedged(struct drm_i915_private *i915) +static bool __intel_gt_unset_wedged(struct intel_gt *gt) { - struct i915_gpu_error *error = &i915->gpu_error; - struct i915_timeline *tl; + struct intel_gt_timelines *timelines = >->timelines; + struct intel_timeline *tl; + unsigned long flags; - if (!test_bit(I915_WEDGED, &error->flags)) + if (!test_bit(I915_WEDGED, >->reset.flags)) return true; - if (!i915->gt.scratch) /* Never full initialised, recovery impossible */ + if (!gt->scratch) /* Never full initialised, recovery impossible */ return false; GEM_TRACE("start\n"); @@ -887,14 +812,16 @@ static bool __i915_gem_unset_wedged(struct drm_i915_private *i915) * * No more can be submitted until we reset the wedged bit. */ - mutex_lock(&i915->gt.timelines.mutex); - list_for_each_entry(tl, &i915->gt.timelines.active_list, link) { + spin_lock_irqsave(&timelines->lock, flags); + list_for_each_entry(tl, &timelines->active_list, link) { struct i915_request *rq; rq = i915_active_request_get_unlocked(&tl->last_request); if (!rq) continue; + spin_unlock_irqrestore(&timelines->lock, flags); + /* * All internal dependencies (i915_requests) will have * been flushed by the set-wedge, but we may be stuck waiting @@ -904,10 +831,14 @@ static bool __i915_gem_unset_wedged(struct drm_i915_private *i915) */ dma_fence_default_wait(&rq->fence, false, MAX_SCHEDULE_TIMEOUT); i915_request_put(rq); + + /* Restart iteration after droping lock */ + spin_lock_irqsave(&timelines->lock, flags); + tl = list_entry(&timelines->active_list, typeof(*tl), link); } - mutex_unlock(&i915->gt.timelines.mutex); + spin_unlock_irqrestore(&timelines->lock, flags); - intel_gt_sanitize(i915, false); + intel_gt_sanitize(gt, false); /* * Undo nop_submit_request. We prevent all new i915 requests from @@ -918,53 +849,51 @@ static bool __i915_gem_unset_wedged(struct drm_i915_private *i915) * the nop_submit_request on reset, we can do this from normal * context and do not require stop_machine(). */ - intel_engines_reset_default_submission(i915); + intel_engines_reset_default_submission(gt); GEM_TRACE("end\n"); smp_mb__before_atomic(); /* complete takeover before enabling execbuf */ - clear_bit(I915_WEDGED, &i915->gpu_error.flags); + clear_bit(I915_WEDGED, >->reset.flags); return true; } -bool i915_gem_unset_wedged(struct drm_i915_private *i915) +bool intel_gt_unset_wedged(struct intel_gt *gt) { - struct i915_gpu_error *error = &i915->gpu_error; bool result; - mutex_lock(&error->wedge_mutex); - result = __i915_gem_unset_wedged(i915); - mutex_unlock(&error->wedge_mutex); + mutex_lock(>->reset.mutex); + result = __intel_gt_unset_wedged(gt); + mutex_unlock(>->reset.mutex); return result; } -static int do_reset(struct drm_i915_private *i915, - intel_engine_mask_t stalled_mask) +static int do_reset(struct intel_gt *gt, intel_engine_mask_t stalled_mask) { int err, i; - gt_revoke(i915); + gt_revoke(gt); - err = intel_gpu_reset(i915, ALL_ENGINES); + err = __intel_gt_reset(gt, ALL_ENGINES); for (i = 0; err && i < RESET_MAX_RETRIES; i++) { msleep(10 * (i + 1)); - err = intel_gpu_reset(i915, ALL_ENGINES); + err = __intel_gt_reset(gt, ALL_ENGINES); } if (err) return err; - return gt_reset(i915, stalled_mask); + return gt_reset(gt, stalled_mask); } -static int resume(struct drm_i915_private *i915) +static int resume(struct intel_gt *gt) { struct intel_engine_cs *engine; enum intel_engine_id id; int ret; - for_each_engine(engine, i915, id) { + for_each_engine(engine, gt->i915, id) { ret = engine->resume(engine); if (ret) return ret; @@ -974,8 +903,8 @@ static int resume(struct drm_i915_private *i915) } /** - * i915_reset - reset chip after a hang - * @i915: #drm_i915_private to reset + * intel_gt_reset - reset chip after a hang + * @gt: #intel_gt to reset * @stalled_mask: mask of the stalled engines with the guilty requests * @reason: user error message for why we are resetting * @@ -990,50 +919,50 @@ static int resume(struct drm_i915_private *i915) * - re-init interrupt state * - re-init display */ -void i915_reset(struct drm_i915_private *i915, - intel_engine_mask_t stalled_mask, - const char *reason) +void intel_gt_reset(struct intel_gt *gt, + intel_engine_mask_t stalled_mask, + const char *reason) { - struct i915_gpu_error *error = &i915->gpu_error; intel_engine_mask_t awake; int ret; - GEM_TRACE("flags=%lx\n", error->flags); + GEM_TRACE("flags=%lx\n", gt->reset.flags); might_sleep(); - GEM_BUG_ON(!test_bit(I915_RESET_BACKOFF, &error->flags)); - mutex_lock(&error->wedge_mutex); + GEM_BUG_ON(!test_bit(I915_RESET_BACKOFF, >->reset.flags)); + mutex_lock(>->reset.mutex); /* Clear any previous failed attempts at recovery. Time to try again. */ - if (!__i915_gem_unset_wedged(i915)) + if (!__intel_gt_unset_wedged(gt)) goto unlock; if (reason) - dev_notice(i915->drm.dev, "Resetting chip for %s\n", reason); - error->reset_count++; + dev_notice(gt->i915->drm.dev, + "Resetting chip for %s\n", reason); + atomic_inc(>->i915->gpu_error.reset_count); - awake = reset_prepare(i915); + awake = reset_prepare(gt); - if (!intel_has_gpu_reset(i915)) { + if (!intel_has_gpu_reset(gt->i915)) { if (i915_modparams.reset) - dev_err(i915->drm.dev, "GPU reset not supported\n"); + dev_err(gt->i915->drm.dev, "GPU reset not supported\n"); else DRM_DEBUG_DRIVER("GPU reset disabled\n"); goto error; } - if (INTEL_INFO(i915)->gpu_reset_clobbers_display) - intel_runtime_pm_disable_interrupts(i915); + if (INTEL_INFO(gt->i915)->gpu_reset_clobbers_display) + intel_runtime_pm_disable_interrupts(gt->i915); - if (do_reset(i915, stalled_mask)) { - dev_err(i915->drm.dev, "Failed to reset chip\n"); + if (do_reset(gt, stalled_mask)) { + dev_err(gt->i915->drm.dev, "Failed to reset chip\n"); goto taint; } - if (INTEL_INFO(i915)->gpu_reset_clobbers_display) - intel_runtime_pm_enable_interrupts(i915); + if (INTEL_INFO(gt->i915)->gpu_reset_clobbers_display) + intel_runtime_pm_enable_interrupts(gt->i915); - intel_overlay_reset(i915); + intel_overlay_reset(gt->i915); /* * Next we need to restore the context, but we don't use those @@ -1043,23 +972,23 @@ void i915_reset(struct drm_i915_private *i915, * was running at the time of the reset (i.e. we weren't VT * switched away). */ - ret = i915_gem_init_hw(i915); + ret = i915_gem_init_hw(gt->i915); if (ret) { DRM_ERROR("Failed to initialise HW following reset (%d)\n", ret); goto taint; } - ret = resume(i915); + ret = resume(gt); if (ret) goto taint; - i915_queue_hangcheck(i915); + intel_gt_queue_hangcheck(gt); finish: - reset_finish(i915, awake); + reset_finish(gt, awake); unlock: - mutex_unlock(&error->wedge_mutex); + mutex_unlock(>->reset.mutex); return; taint: @@ -1077,18 +1006,17 @@ taint: */ add_taint_for_CI(TAINT_WARN); error: - __i915_gem_set_wedged(i915); + __intel_gt_set_wedged(gt); goto finish; } -static inline int intel_gt_reset_engine(struct drm_i915_private *i915, - struct intel_engine_cs *engine) +static inline int intel_gt_reset_engine(struct intel_engine_cs *engine) { - return intel_gpu_reset(i915, engine->mask); + return __intel_gt_reset(engine->gt, engine->mask); } /** - * i915_reset_engine - reset GPU engine to recover from a hang + * intel_engine_reset - reset GPU engine to recover from a hang * @engine: engine to reset * @msg: reason for GPU reset; or NULL for no dev_notice() * @@ -1100,13 +1028,13 @@ static inline int intel_gt_reset_engine(struct drm_i915_private *i915, * - reset engine (which will force the engine to idle) * - re-init/configure engine */ -int i915_reset_engine(struct intel_engine_cs *engine, const char *msg) +int intel_engine_reset(struct intel_engine_cs *engine, const char *msg) { - struct i915_gpu_error *error = &engine->i915->gpu_error; + struct intel_gt *gt = engine->gt; int ret; - GEM_TRACE("%s flags=%lx\n", engine->name, error->flags); - GEM_BUG_ON(!test_bit(I915_RESET_ENGINE + engine->id, &error->flags)); + GEM_TRACE("%s flags=%lx\n", engine->name, gt->reset.flags); + GEM_BUG_ON(!test_bit(I915_RESET_ENGINE + engine->id, >->reset.flags)); if (!intel_engine_pm_get_if_awake(engine)) return 0; @@ -1116,16 +1044,16 @@ int i915_reset_engine(struct intel_engine_cs *engine, const char *msg) if (msg) dev_notice(engine->i915->drm.dev, "Resetting %s for %s\n", engine->name, msg); - error->reset_engine_count[engine->id]++; + atomic_inc(&engine->i915->gpu_error.reset_engine_count[engine->uabi_class]); - if (!engine->i915->guc.execbuf_client) - ret = intel_gt_reset_engine(engine->i915, engine); + if (!engine->gt->uc.guc.execbuf_client) + ret = intel_gt_reset_engine(engine); else - ret = intel_guc_reset_engine(&engine->i915->guc, engine); + ret = intel_guc_reset_engine(&engine->gt->uc.guc, engine); if (ret) { /* If we fail here, we expect to fallback to a global reset */ DRM_DEBUG_DRIVER("%sFailed to reset %s, ret=%d\n", - engine->i915->guc.execbuf_client ? "GuC " : "", + engine->gt->uc.guc.execbuf_client ? "GuC " : "", engine->name, ret); goto out; } @@ -1135,7 +1063,7 @@ int i915_reset_engine(struct intel_engine_cs *engine, const char *msg) * active request and can drop it, adjust head to skip the offending * request to resume executing remaining requests in the queue. */ - intel_engine_reset(engine, true); + __intel_engine_reset(engine, true); /* * The engine and its registers (and workarounds in case of render) @@ -1151,16 +1079,15 @@ out: return ret; } -static void i915_reset_device(struct drm_i915_private *i915, - u32 engine_mask, - const char *reason) +static void intel_gt_reset_global(struct intel_gt *gt, + u32 engine_mask, + const char *reason) { - struct i915_gpu_error *error = &i915->gpu_error; - struct kobject *kobj = &i915->drm.primary->kdev->kobj; + struct kobject *kobj = >->i915->drm.primary->kdev->kobj; char *error_event[] = { I915_ERROR_UEVENT "=1", NULL }; char *reset_event[] = { I915_RESET_UEVENT "=1", NULL }; char *reset_done_event[] = { I915_ERROR_UEVENT "=0", NULL }; - struct i915_wedge_me w; + struct intel_wedge_me w; kobject_uevent_env(kobj, KOBJ_CHANGE, error_event); @@ -1168,137 +1095,24 @@ static void i915_reset_device(struct drm_i915_private *i915, kobject_uevent_env(kobj, KOBJ_CHANGE, reset_event); /* Use a watchdog to ensure that our reset completes */ - i915_wedge_on_timeout(&w, i915, 5 * HZ) { - intel_prepare_reset(i915); + intel_wedge_on_timeout(&w, gt, 5 * HZ) { + intel_prepare_reset(gt->i915); /* Flush everyone using a resource about to be clobbered */ - synchronize_srcu_expedited(&error->reset_backoff_srcu); + synchronize_srcu_expedited(>->reset.backoff_srcu); - i915_reset(i915, engine_mask, reason); + intel_gt_reset(gt, engine_mask, reason); - intel_finish_reset(i915); + intel_finish_reset(gt->i915); } - if (!test_bit(I915_WEDGED, &error->flags)) + if (!test_bit(I915_WEDGED, >->reset.flags)) kobject_uevent_env(kobj, KOBJ_CHANGE, reset_done_event); } -static void clear_register(struct intel_uncore *uncore, i915_reg_t reg) -{ - intel_uncore_rmw(uncore, reg, 0, 0); -} - -static void gen8_clear_engine_error_register(struct intel_engine_cs *engine) -{ - GEN6_RING_FAULT_REG_RMW(engine, RING_FAULT_VALID, 0); - GEN6_RING_FAULT_REG_POSTING_READ(engine); -} - -static void clear_error_registers(struct drm_i915_private *i915, - intel_engine_mask_t engine_mask) -{ - struct intel_uncore *uncore = &i915->uncore; - u32 eir; - - if (!IS_GEN(i915, 2)) - clear_register(uncore, PGTBL_ER); - - if (INTEL_GEN(i915) < 4) - clear_register(uncore, IPEIR(RENDER_RING_BASE)); - else - clear_register(uncore, IPEIR_I965); - - clear_register(uncore, EIR); - eir = intel_uncore_read(uncore, EIR); - if (eir) { - /* - * some errors might have become stuck, - * mask them. - */ - DRM_DEBUG_DRIVER("EIR stuck: 0x%08x, masking\n", eir); - rmw_set(uncore, EMR, eir); - intel_uncore_write(uncore, GEN2_IIR, - I915_MASTER_ERROR_INTERRUPT); - } - - if (INTEL_GEN(i915) >= 8) { - rmw_clear(uncore, GEN8_RING_FAULT_REG, RING_FAULT_VALID); - intel_uncore_posting_read(uncore, GEN8_RING_FAULT_REG); - } else if (INTEL_GEN(i915) >= 6) { - struct intel_engine_cs *engine; - enum intel_engine_id id; - - for_each_engine_masked(engine, i915, engine_mask, id) - gen8_clear_engine_error_register(engine); - } -} - -static void gen6_check_faults(struct drm_i915_private *dev_priv) -{ - struct intel_engine_cs *engine; - enum intel_engine_id id; - u32 fault; - - for_each_engine(engine, dev_priv, id) { - fault = GEN6_RING_FAULT_REG_READ(engine); - if (fault & RING_FAULT_VALID) { - DRM_DEBUG_DRIVER("Unexpected fault\n" - "\tAddr: 0x%08lx\n" - "\tAddress space: %s\n" - "\tSource ID: %d\n" - "\tType: %d\n", - fault & PAGE_MASK, - fault & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT", - RING_FAULT_SRCID(fault), - RING_FAULT_FAULT_TYPE(fault)); - } - } -} - -static void gen8_check_faults(struct drm_i915_private *dev_priv) -{ - u32 fault = I915_READ(GEN8_RING_FAULT_REG); - - if (fault & RING_FAULT_VALID) { - u32 fault_data0, fault_data1; - u64 fault_addr; - - fault_data0 = I915_READ(GEN8_FAULT_TLB_DATA0); - fault_data1 = I915_READ(GEN8_FAULT_TLB_DATA1); - fault_addr = ((u64)(fault_data1 & FAULT_VA_HIGH_BITS) << 44) | - ((u64)fault_data0 << 12); - - DRM_DEBUG_DRIVER("Unexpected fault\n" - "\tAddr: 0x%08x_%08x\n" - "\tAddress space: %s\n" - "\tEngine ID: %d\n" - "\tSource ID: %d\n" - "\tType: %d\n", - upper_32_bits(fault_addr), - lower_32_bits(fault_addr), - fault_data1 & FAULT_GTT_SEL ? "GGTT" : "PPGTT", - GEN8_RING_FAULT_ENGINE_ID(fault), - RING_FAULT_SRCID(fault), - RING_FAULT_FAULT_TYPE(fault)); - } -} - -void i915_check_and_clear_faults(struct drm_i915_private *i915) -{ - /* From GEN8 onwards we only have one 'All Engine Fault Register' */ - if (INTEL_GEN(i915) >= 8) - gen8_check_faults(i915); - else if (INTEL_GEN(i915) >= 6) - gen6_check_faults(i915); - else - return; - - clear_error_registers(i915, ALL_ENGINES); -} - /** - * i915_handle_error - handle a gpu error - * @i915: i915 device private + * intel_gt_handle_error - handle a gpu error + * @gt: the intel_gt * @engine_mask: mask representing engines that are hung * @flags: control flags * @fmt: Error message format string @@ -1309,12 +1123,11 @@ void i915_check_and_clear_faults(struct drm_i915_private *i915) * so userspace knows something bad happened (should trigger collection * of a ring dump etc.). */ -void i915_handle_error(struct drm_i915_private *i915, - intel_engine_mask_t engine_mask, - unsigned long flags, - const char *fmt, ...) +void intel_gt_handle_error(struct intel_gt *gt, + intel_engine_mask_t engine_mask, + unsigned long flags, + const char *fmt, ...) { - struct i915_gpu_error *error = &i915->gpu_error; struct intel_engine_cs *engine; intel_wakeref_t wakeref; intel_engine_mask_t tmp; @@ -1338,33 +1151,31 @@ void i915_handle_error(struct drm_i915_private *i915, * isn't the case at least when we get here by doing a * simulated reset via debugfs, so get an RPM reference. */ - wakeref = intel_runtime_pm_get(&i915->runtime_pm); + wakeref = intel_runtime_pm_get(>->i915->runtime_pm); - engine_mask &= INTEL_INFO(i915)->engine_mask; + engine_mask &= INTEL_INFO(gt->i915)->engine_mask; if (flags & I915_ERROR_CAPTURE) { - i915_capture_error_state(i915, engine_mask, msg); - clear_error_registers(i915, engine_mask); + i915_capture_error_state(gt->i915, engine_mask, msg); + intel_gt_clear_error_registers(gt, engine_mask); } /* * Try engine reset when available. We fall back to full reset if * single reset fails. */ - if (intel_has_reset_engine(i915) && !__i915_wedged(error)) { - for_each_engine_masked(engine, i915, engine_mask, tmp) { + if (intel_has_reset_engine(gt->i915) && !intel_gt_is_wedged(gt)) { + for_each_engine_masked(engine, gt->i915, engine_mask, tmp) { BUILD_BUG_ON(I915_RESET_MODESET >= I915_RESET_ENGINE); if (test_and_set_bit(I915_RESET_ENGINE + engine->id, - &error->flags)) + >->reset.flags)) continue; - if (i915_reset_engine(engine, msg) == 0) + if (intel_engine_reset(engine, msg) == 0) engine_mask &= ~engine->mask; - clear_bit(I915_RESET_ENGINE + engine->id, - &error->flags); - wake_up_bit(&error->flags, - I915_RESET_ENGINE + engine->id); + clear_and_wake_up_bit(I915_RESET_ENGINE + engine->id, + >->reset.flags); } } @@ -1372,9 +1183,9 @@ void i915_handle_error(struct drm_i915_private *i915, goto out; /* Full reset needs the mutex, stop any other user trying to do so. */ - if (test_and_set_bit(I915_RESET_BACKOFF, &error->flags)) { - wait_event(error->reset_queue, - !test_bit(I915_RESET_BACKOFF, &error->flags)); + if (test_and_set_bit(I915_RESET_BACKOFF, >->reset.flags)) { + wait_event(gt->reset.queue, + !test_bit(I915_RESET_BACKOFF, >->reset.flags)); goto out; /* piggy-back on the other reset */ } @@ -1382,113 +1193,119 @@ void i915_handle_error(struct drm_i915_private *i915, synchronize_rcu_expedited(); /* Prevent any other reset-engine attempt. */ - for_each_engine(engine, i915, tmp) { + for_each_engine(engine, gt->i915, tmp) { while (test_and_set_bit(I915_RESET_ENGINE + engine->id, - &error->flags)) - wait_on_bit(&error->flags, + >->reset.flags)) + wait_on_bit(>->reset.flags, I915_RESET_ENGINE + engine->id, TASK_UNINTERRUPTIBLE); } - i915_reset_device(i915, engine_mask, msg); + intel_gt_reset_global(gt, engine_mask, msg); - for_each_engine(engine, i915, tmp) { - clear_bit(I915_RESET_ENGINE + engine->id, - &error->flags); - } - - clear_bit(I915_RESET_BACKOFF, &error->flags); - wake_up_all(&error->reset_queue); + for_each_engine(engine, gt->i915, tmp) + clear_bit_unlock(I915_RESET_ENGINE + engine->id, + >->reset.flags); + clear_bit_unlock(I915_RESET_BACKOFF, >->reset.flags); + smp_mb__after_atomic(); + wake_up_all(>->reset.queue); out: - intel_runtime_pm_put(&i915->runtime_pm, wakeref); + intel_runtime_pm_put(>->i915->runtime_pm, wakeref); } -int i915_reset_trylock(struct drm_i915_private *i915) +int intel_gt_reset_trylock(struct intel_gt *gt) { - struct i915_gpu_error *error = &i915->gpu_error; int srcu; - might_lock(&error->reset_backoff_srcu); + might_lock(>->reset.backoff_srcu); might_sleep(); rcu_read_lock(); - while (test_bit(I915_RESET_BACKOFF, &error->flags)) { + while (test_bit(I915_RESET_BACKOFF, >->reset.flags)) { rcu_read_unlock(); - if (wait_event_interruptible(error->reset_queue, + if (wait_event_interruptible(gt->reset.queue, !test_bit(I915_RESET_BACKOFF, - &error->flags))) + >->reset.flags))) return -EINTR; rcu_read_lock(); } - srcu = srcu_read_lock(&error->reset_backoff_srcu); + srcu = srcu_read_lock(>->reset.backoff_srcu); rcu_read_unlock(); return srcu; } -void i915_reset_unlock(struct drm_i915_private *i915, int tag) -__releases(&i915->gpu_error.reset_backoff_srcu) +void intel_gt_reset_unlock(struct intel_gt *gt, int tag) +__releases(>->reset.backoff_srcu) { - struct i915_gpu_error *error = &i915->gpu_error; - - srcu_read_unlock(&error->reset_backoff_srcu, tag); + srcu_read_unlock(>->reset.backoff_srcu, tag); } -int i915_terminally_wedged(struct drm_i915_private *i915) +int intel_gt_terminally_wedged(struct intel_gt *gt) { - struct i915_gpu_error *error = &i915->gpu_error; - might_sleep(); - if (!__i915_wedged(error)) + if (!intel_gt_is_wedged(gt)) return 0; /* Reset still in progress? Maybe we will recover? */ - if (!test_bit(I915_RESET_BACKOFF, &error->flags)) + if (!test_bit(I915_RESET_BACKOFF, >->reset.flags)) return -EIO; /* XXX intel_reset_finish() still takes struct_mutex!!! */ - if (mutex_is_locked(&i915->drm.struct_mutex)) + if (mutex_is_locked(>->i915->drm.struct_mutex)) return -EAGAIN; - if (wait_event_interruptible(error->reset_queue, + if (wait_event_interruptible(gt->reset.queue, !test_bit(I915_RESET_BACKOFF, - &error->flags))) + >->reset.flags))) return -EINTR; - return __i915_wedged(error) ? -EIO : 0; + return intel_gt_is_wedged(gt) ? -EIO : 0; +} + +void intel_gt_init_reset(struct intel_gt *gt) +{ + init_waitqueue_head(>->reset.queue); + mutex_init(>->reset.mutex); + init_srcu_struct(>->reset.backoff_srcu); +} + +void intel_gt_fini_reset(struct intel_gt *gt) +{ + cleanup_srcu_struct(>->reset.backoff_srcu); } -static void i915_wedge_me(struct work_struct *work) +static void intel_wedge_me(struct work_struct *work) { - struct i915_wedge_me *w = container_of(work, typeof(*w), work.work); + struct intel_wedge_me *w = container_of(work, typeof(*w), work.work); - dev_err(w->i915->drm.dev, + dev_err(w->gt->i915->drm.dev, "%s timed out, cancelling all in-flight rendering.\n", w->name); - i915_gem_set_wedged(w->i915); + intel_gt_set_wedged(w->gt); } -void __i915_init_wedge(struct i915_wedge_me *w, - struct drm_i915_private *i915, - long timeout, - const char *name) +void __intel_init_wedge(struct intel_wedge_me *w, + struct intel_gt *gt, + long timeout, + const char *name) { - w->i915 = i915; + w->gt = gt; w->name = name; - INIT_DELAYED_WORK_ONSTACK(&w->work, i915_wedge_me); + INIT_DELAYED_WORK_ONSTACK(&w->work, intel_wedge_me); schedule_delayed_work(&w->work, timeout); } -void __i915_fini_wedge(struct i915_wedge_me *w) +void __intel_fini_wedge(struct intel_wedge_me *w) { cancel_delayed_work_sync(&w->work); destroy_delayed_work_on_stack(&w->work); - w->i915 = NULL; + w->gt = NULL; } #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) |