diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_context_types.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 24 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 49 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 3 |
8 files changed, 60 insertions, 45 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 63eca3061d10..35d0782c077e 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1995,7 +1995,6 @@ struct drm_i915_private { /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */ struct { - void (*resume)(struct drm_i915_private *); void (*cleanup_engine)(struct intel_engine_cs *engine); struct i915_gt_timelines { diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index bf3d12f94365..0a818a60ad31 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -4513,7 +4513,7 @@ void i915_gem_resume(struct drm_i915_private *i915) * guarantee that the context image is complete. So let's just reset * it and start again. */ - i915->gt.resume(i915); + intel_gt_resume(i915); if (i915_gem_init_hw(i915)) goto err_wedged; @@ -4853,13 +4853,10 @@ int i915_gem_init(struct drm_i915_private *dev_priv) dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1); - if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) { - dev_priv->gt.resume = intel_lr_context_resume; + if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) dev_priv->gt.cleanup_engine = intel_logical_ring_cleanup; - } else { - dev_priv->gt.resume = intel_legacy_submission_resume; + else dev_priv->gt.cleanup_engine = intel_engine_cleanup; - } i915_timelines_init(dev_priv); diff --git a/drivers/gpu/drm/i915/intel_context_types.h b/drivers/gpu/drm/i915/intel_context_types.h index 624729a35875..68b4ca1611e0 100644 --- a/drivers/gpu/drm/i915/intel_context_types.h +++ b/drivers/gpu/drm/i915/intel_context_types.h @@ -24,6 +24,7 @@ struct intel_context_ops { int (*pin)(struct intel_context *ce); void (*unpin)(struct intel_context *ce); + void (*reset)(struct intel_context *ce); void (*destroy)(struct kref *kref); }; diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index d0427c2e3997..f29a667cad52 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -753,6 +753,30 @@ err_unpin: return ret; } +void intel_gt_resume(struct drm_i915_private *i915) +{ + struct intel_engine_cs *engine; + enum intel_engine_id id; + + /* + * After resume, we may need to poke into the pinned kernel + * contexts to paper over any damage caused by the sudden suspend. + * Only the kernel contexts should remain pinned over suspend, + * allowing us to fixup the user contexts on their first pin. + */ + for_each_engine(engine, i915, id) { + struct intel_context *ce; + + ce = engine->kernel_context; + if (ce) + ce->ops->reset(ce); + + ce = engine->preempt_context; + if (ce) + ce->ops->reset(ce); + } +} + /** * intel_engines_cleanup_common - cleans up the engine state created by * the common initiailizers. diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 6931dbb2888c..b54dbf36197e 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1379,9 +1379,33 @@ static int execlists_context_pin(struct intel_context *ce) return __execlists_context_pin(ce, ce->engine); } +static void execlists_context_reset(struct intel_context *ce) +{ + /* + * Because we emit WA_TAIL_DWORDS there may be a disparity + * between our bookkeeping in ce->ring->head and ce->ring->tail and + * that stored in context. As we only write new commands from + * ce->ring->tail onwards, everything before that is junk. If the GPU + * starts reading from its RING_HEAD from the context, it may try to + * execute that junk and die. + * + * The contexts that are stilled pinned on resume belong to the + * kernel, and are local to each engine. All other contexts will + * have their head/tail sanitized upon pinning before use, so they + * will never see garbage, + * + * So to avoid that we reset the context images upon resume. For + * simplicity, we just zero everything out. + */ + intel_ring_reset(ce->ring, 0); + __execlists_update_reg_state(ce, ce->engine); +} + static const struct intel_context_ops execlists_context_ops = { .pin = execlists_context_pin, .unpin = execlists_context_unpin, + + .reset = execlists_context_reset, .destroy = execlists_context_destroy, }; @@ -2895,31 +2919,6 @@ error_deref_obj: return ret; } -void intel_lr_context_resume(struct drm_i915_private *i915) -{ - struct i915_gem_context *ctx; - struct intel_context *ce; - - /* - * Because we emit WA_TAIL_DWORDS there may be a disparity - * between our bookkeeping in ce->ring->head and ce->ring->tail and - * that stored in context. As we only write new commands from - * ce->ring->tail onwards, everything before that is junk. If the GPU - * starts reading from its RING_HEAD from the context, it may try to - * execute that junk and die. - * - * So to avoid that we reset the context images upon resume. For - * simplicity, we just zero everything out. - */ - list_for_each_entry(ctx, &i915->contexts.list, link) { - list_for_each_entry(ce, &ctx->active_engines, active_link) { - GEM_BUG_ON(!ce->ring); - intel_ring_reset(ce->ring, 0); - __execlists_update_reg_state(ce, ce->engine); - } - } -} - void intel_execlists_show_requests(struct intel_engine_cs *engine, struct drm_printer *m, void (*show_request)(struct drm_printer *m, diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index 92642ab91472..4d0b7736cb6d 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -102,7 +102,6 @@ struct drm_printer; struct drm_i915_private; struct i915_gem_context; -void intel_lr_context_resume(struct drm_i915_private *dev_priv); void intel_execlists_set_default_submission(struct intel_engine_cs *engine); void intel_execlists_show_requests(struct intel_engine_cs *engine, diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 8a19eee9c5d4..af35f99c5940 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1508,9 +1508,16 @@ err_unpin: return err; } +static void ring_context_reset(struct intel_context *ce) +{ + intel_ring_reset(ce->ring, 0); +} + static const struct intel_context_ops ring_context_ops = { .pin = ring_context_pin, .unpin = ring_context_unpin, + + .reset = ring_context_reset, .destroy = ring_context_destroy, }; @@ -1581,16 +1588,6 @@ void intel_engine_cleanup(struct intel_engine_cs *engine) kfree(engine); } -void intel_legacy_submission_resume(struct drm_i915_private *dev_priv) -{ - struct intel_engine_cs *engine; - enum intel_engine_id id; - - /* Restart from the beginning of the rings for convenience */ - for_each_engine(engine, dev_priv, id) - intel_ring_reset(engine->buffer, 0); -} - static int load_pd_dir(struct i915_request *rq, const struct i915_hw_ppgtt *ppgtt) { diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index e58d6f04177b..0dea6c7fd438 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -268,8 +268,6 @@ static inline void intel_ring_put(struct intel_ring *ring) void intel_engine_stop(struct intel_engine_cs *engine); void intel_engine_cleanup(struct intel_engine_cs *engine); -void intel_legacy_submission_resume(struct drm_i915_private *dev_priv); - int __must_check intel_ring_cacheline_align(struct i915_request *rq); u32 __must_check *intel_ring_begin(struct i915_request *rq, unsigned int n); @@ -463,6 +461,7 @@ static inline void intel_engine_reset(struct intel_engine_cs *engine, } void intel_engines_sanitize(struct drm_i915_private *i915, bool force); +void intel_gt_resume(struct drm_i915_private *i915); bool intel_engine_is_idle(struct intel_engine_cs *engine); bool intel_engines_are_idle(struct drm_i915_private *dev_priv); |