diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 3479cda37fdc..f028114714cd 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -2804,6 +2804,45 @@ static struct execlists_capture *capture_regs(struct intel_engine_cs *engine) return NULL; } +static struct i915_request * +active_context(struct intel_engine_cs *engine, u32 ccid) +{ + const struct intel_engine_execlists * const el = &engine->execlists; + struct i915_request * const *port, *rq; + + /* + * Use the most recent result from process_csb(), but just in case + * we trigger an error (via interrupt) before the first CS event has + * been written, peek at the next submission. + */ + + for (port = el->active; (rq = *port); port++) { + if (upper_32_bits(rq->context->lrc_desc) == ccid) { + ENGINE_TRACE(engine, + "ccid found at active:%zd\n", + port - el->active); + return rq; + } + } + + for (port = el->pending; (rq = *port); port++) { + if (upper_32_bits(rq->context->lrc_desc) == ccid) { + ENGINE_TRACE(engine, + "ccid found at pending:%zd\n", + port - el->pending); + return rq; + } + } + + ENGINE_TRACE(engine, "ccid:%x not found\n", ccid); + return NULL; +} + +static u32 active_ccid(struct intel_engine_cs *engine) +{ + return ENGINE_READ_FW(engine, RING_EXECLIST_STATUS_HI); +} + static bool execlists_capture(struct intel_engine_cs *engine) { struct execlists_capture *cap; @@ -2821,7 +2860,7 @@ static bool execlists_capture(struct intel_engine_cs *engine) return true; spin_lock_irq(&engine->active.lock); - cap->rq = execlists_active(&engine->execlists); + cap->rq = active_context(engine, active_ccid(engine)); if (cap->rq) { cap->rq = active_request(cap->rq->context->timeline, cap->rq); cap->rq = i915_request_get_rcu(cap->rq);