Update context and full GPU reset to work with multi-lrc. The idea is parent context tracks all the active requests inflight for itself and its' children. The parent context owns the reset replaying / canceling requests as needed.
Signed-off-by: Matthew Brost matthew.brost@intel.com --- drivers/gpu/drm/i915/gt/intel_context.c | 12 +++-- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 54 ++++++++++++++----- 2 files changed, 47 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index 60dd77d5f31d..7395894724f8 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -605,20 +605,22 @@ struct i915_request *intel_context_create_request(struct intel_context *ce)
struct i915_request *intel_context_find_active_request(struct intel_context *ce) { + struct intel_context *parent = intel_context_is_child(ce) ? + ce->parent : ce; struct i915_request *rq, *active = NULL; unsigned long flags;
GEM_BUG_ON(!intel_engine_uses_guc(ce->engine));
- spin_lock_irqsave(&ce->guc_active.lock, flags); - list_for_each_entry_reverse(rq, &ce->guc_active.requests, + spin_lock_irqsave(&parent->guc_active.lock, flags); + list_for_each_entry_reverse(rq, &parent->guc_active.requests, sched.link) { - if (i915_request_completed(rq)) + if (i915_request_completed(rq) && rq->context == ce) break;
- active = rq; + active = (rq->context == ce) ? rq : active; } - spin_unlock_irqrestore(&ce->guc_active.lock, flags); + spin_unlock_irqrestore(&parent->guc_active.lock, flags);
return active; } diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index a7a9817a86bc..8db1d56e34e2 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -810,6 +810,11 @@ static inline int rq_prio(const struct i915_request *rq) return rq->sched.attr.priority; }
+static inline bool is_multi_lrc(struct intel_context *ce) +{ + return intel_context_is_parallel(ce); +} + static inline bool is_multi_lrc_rq(struct i915_request *rq) { return intel_context_is_parallel(rq->context); @@ -1371,6 +1376,8 @@ __unwind_incomplete_requests(struct intel_context *ce) ce->engine->sched_engine; unsigned long flags;
+ GEM_BUG_ON(intel_context_is_child(ce)); + spin_lock_irqsave(&sched_engine->lock, flags); spin_lock(&ce->guc_active.lock); list_for_each_entry_safe(rq, rn, @@ -1403,8 +1410,12 @@ __unwind_incomplete_requests(struct intel_context *ce)
static void __guc_reset_context(struct intel_context *ce, bool stalled) { + bool local_stalled; struct i915_request *rq; u32 head; + int i, number_children = ce->guc_number_children; + + GEM_BUG_ON(intel_context_is_child(ce));
intel_context_get(ce);
@@ -1416,22 +1427,32 @@ static void __guc_reset_context(struct intel_context *ce, bool stalled) */ clr_context_enabled(ce);
- rq = intel_context_find_active_request(ce); - if (!rq) { - head = ce->ring->tail; - stalled = false; - goto out_replay; - } + for (i = 0; i < number_children + 1; ++i) { + if (!intel_context_is_pinned(ce)) + goto next_context; + + local_stalled = false; + rq = intel_context_find_active_request(ce); + if (!rq) { + head = ce->ring->tail; + goto out_replay; + }
- if (!i915_request_started(rq)) - stalled = false; + GEM_BUG_ON(i915_active_is_idle(&ce->active)); + head = intel_ring_wrap(ce->ring, rq->head);
- GEM_BUG_ON(i915_active_is_idle(&ce->active)); - head = intel_ring_wrap(ce->ring, rq->head); - __i915_request_reset(rq, stalled); + if (i915_request_started(rq)) + local_stalled = true;
+ __i915_request_reset(rq, local_stalled && stalled); out_replay: - guc_reset_state(ce, head, stalled); + guc_reset_state(ce, head, local_stalled && stalled); +next_context: + if (i != number_children) + ce = list_next_entry(ce, guc_child_link); + } + ce = intel_context_to_parent(ce); + __unwind_incomplete_requests(ce); ce->guc_num_rq_submit_no_id = 0; intel_context_put(ce); @@ -1447,9 +1468,11 @@ void intel_guc_submission_reset(struct intel_guc *guc, bool stalled) return;
xa_for_each(&guc->context_lookup, index, ce) - if (intel_context_is_pinned(ce)) + if (intel_context_is_pinned(ce) && + !intel_context_is_child(ce)) __guc_reset_context(ce, stalled);
+ /* GuC is blown away, drop all references to contexts */ xa_destroy(&guc->context_lookup); }
@@ -1532,7 +1555,8 @@ void intel_guc_submission_cancel_requests(struct intel_guc *guc) int i;
xa_for_each(&guc->context_lookup, index, ce) - if (intel_context_is_pinned(ce)) + if (intel_context_is_pinned(ce) && + !intel_context_is_child(ce)) guc_cancel_context_requests(ce);
for (i = 0; i < GUC_SUBMIT_ENGINE_MAX; ++i) @@ -2792,6 +2816,8 @@ static void guc_context_ban(struct intel_context *ce, struct i915_request *rq) intel_wakeref_t wakeref; unsigned long flags;
+ GEM_BUG_ON(intel_context_is_child(ce)); + gse_flush_submissions(ce_to_gse(ce));
spin_lock_irqsave(&ce->guc_state.lock, flags);