diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 125 |
1 files changed, 101 insertions, 24 deletions
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 ed979847187f..127316d2c8aa 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -633,7 +633,7 @@ static int guc_submission_send_busy_loop(struct intel_guc *guc, atomic_inc(&guc->outstanding_submission_g2h); ret = intel_guc_send_busy_loop(guc, action, len, g2h_len_dw, loop); - if (ret) + if (ret && g2h_len_dw) atomic_dec(&guc->outstanding_submission_g2h); return ret; @@ -1223,7 +1223,7 @@ __extend_last_switch(struct intel_guc *guc, u64 *prev_start, u32 new_start) * determine validity of these values. Instead we read the values multiple times * until they are consistent. In test runs, 3 attempts results in consistent * values. The upper bound is set to 6 attempts and may need to be tuned as per - * any new occurences. + * any new occurrences. */ static void __get_engine_usage_record(struct intel_engine_cs *engine, u32 *last_in, u32 *id, u32 *total) @@ -1243,6 +1243,21 @@ static void __get_engine_usage_record(struct intel_engine_cs *engine, } while (++i < 6); } +static void __set_engine_usage_record(struct intel_engine_cs *engine, + u32 last_in, u32 id, u32 total) +{ + struct iosys_map rec_map = intel_guc_engine_usage_record_map(engine); + +#define record_write(map_, field_, val_) \ + iosys_map_wr_field(map_, 0, struct guc_engine_usage_record, field_, val_) + + record_write(&rec_map, last_switch_in_stamp, last_in); + record_write(&rec_map, current_context_index, id); + record_write(&rec_map, total_runtime, total); + +#undef record_write +} + static void guc_update_engine_gt_clks(struct intel_engine_cs *engine) { struct intel_engine_guc_stats *stats = &engine->stats.guc; @@ -1270,15 +1285,12 @@ static void guc_update_engine_gt_clks(struct intel_engine_cs *engine) static u32 gpm_timestamp_shift(struct intel_gt *gt) { intel_wakeref_t wakeref; - u32 reg, shift; + u32 reg; with_intel_runtime_pm(gt->uncore->rpm, wakeref) reg = intel_uncore_read(gt->uncore, RPM_CONFIG0); - shift = (reg & GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_MASK) >> - GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_SHIFT; - - return 3 - shift; + return 3 - REG_FIELD_GET(GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_MASK, reg); } static void guc_update_pm_timestamp(struct intel_guc *guc, ktime_t *now) @@ -1339,7 +1351,7 @@ static ktime_t guc_engine_busyness(struct intel_engine_cs *engine, ktime_t *now) * start_gt_clk is derived from GuC state. To get a consistent * view of activity, we query the GuC state only if gt is awake. */ - wakeref = in_reset ? 0 : intel_gt_pm_get_if_awake(gt); + wakeref = in_reset ? NULL : intel_gt_pm_get_if_awake(gt); if (wakeref) { stats_saved = *stats; gt_stamp_saved = guc->timestamp.gt_stamp; @@ -1363,9 +1375,12 @@ static ktime_t guc_engine_busyness(struct intel_engine_cs *engine, ktime_t *now) total += intel_gt_clock_interval_to_ns(gt, clk); } + if (total > stats->total) + stats->total = total; + spin_unlock_irqrestore(&guc->timestamp.lock, flags); - return ns_to_ktime(total); + return ns_to_ktime(stats->total); } static void guc_enable_busyness_worker(struct intel_guc *guc) @@ -1431,13 +1446,39 @@ static void __reset_guc_busyness_stats(struct intel_guc *guc) guc_update_pm_timestamp(guc, &unused); for_each_engine(engine, gt, id) { + struct intel_engine_guc_stats *stats = &engine->stats.guc; + guc_update_engine_gt_clks(engine); - engine->stats.guc.prev_total = 0; + + /* + * If resetting a running context, accumulate the active + * time as well since there will be no context switch. + */ + if (stats->running) { + u64 clk = guc->timestamp.gt_stamp - stats->start_gt_clk; + + stats->total_gt_clks += clk; + } + stats->prev_total = 0; + stats->running = 0; } spin_unlock_irqrestore(&guc->timestamp.lock, flags); } +static void __update_guc_busyness_running_state(struct intel_guc *guc) +{ + struct intel_gt *gt = guc_to_gt(guc); + struct intel_engine_cs *engine; + enum intel_engine_id id; + unsigned long flags; + + spin_lock_irqsave(&guc->timestamp.lock, flags); + for_each_engine(engine, gt, id) + engine->stats.guc.running = false; + spin_unlock_irqrestore(&guc->timestamp.lock, flags); +} + static void __update_guc_busyness_stats(struct intel_guc *guc) { struct intel_gt *gt = guc_to_gt(guc); @@ -1543,6 +1584,9 @@ err_trylock: static int guc_action_enable_usage_stats(struct intel_guc *guc) { + struct intel_gt *gt = guc_to_gt(guc); + struct intel_engine_cs *engine; + enum intel_engine_id id; u32 offset = intel_guc_engine_usage_offset(guc); u32 action[] = { INTEL_GUC_ACTION_SET_ENG_UTIL_BUFF, @@ -1550,6 +1594,9 @@ static int guc_action_enable_usage_stats(struct intel_guc *guc) 0, }; + for_each_engine(engine, gt, id) + __set_engine_usage_record(engine, 0, 0xffffffff, 0); + return intel_guc_send(guc, action, ARRAY_SIZE(action)); } @@ -1582,6 +1629,9 @@ void intel_guc_busyness_park(struct intel_gt *gt) if (!guc_submission_initialized(guc)) return; + /* Assume no engines are running and set running state to false */ + __update_guc_busyness_running_state(guc); + /* * There is a race with suspend flow where the worker runs after suspend * and causes an unclaimed register access warning. Cancel the worker @@ -1688,6 +1738,10 @@ void intel_guc_submission_reset_prepare(struct intel_guc *guc) spin_lock_irq(guc_to_gt(guc)->irq_lock); spin_unlock_irq(guc_to_gt(guc)->irq_lock); + /* Flush tasklet */ + tasklet_disable(&guc->ct.receive_tasklet); + tasklet_enable(&guc->ct.receive_tasklet); + guc_flush_submissions(guc); guc_flush_destroyed_contexts(guc); flush_work(&guc->ct.requests.worker); @@ -2005,6 +2059,8 @@ void intel_guc_submission_cancel_requests(struct intel_guc *guc) void intel_guc_submission_reset_finish(struct intel_guc *guc) { + int outstanding; + /* Reset called during driver load or during wedge? */ if (unlikely(!guc_submission_initialized(guc) || !intel_guc_is_fw_running(guc) || @@ -2018,8 +2074,10 @@ void intel_guc_submission_reset_finish(struct intel_guc *guc) * see in CI if this happens frequently / a precursor to taking down the * machine. */ - if (atomic_read(&guc->outstanding_submission_g2h)) - guc_err(guc, "Unexpected outstanding GuC to Host in reset finish\n"); + outstanding = atomic_read(&guc->outstanding_submission_g2h); + if (outstanding) + guc_err(guc, "Unexpected outstanding GuC to Host response(s) in reset finish: %d\n", + outstanding); atomic_set(&guc->outstanding_submission_g2h, 0); intel_guc_global_policies_update(guc); @@ -2950,7 +3008,7 @@ static int __guc_context_pin(struct intel_context *ce, /* * GuC context gets pinned in guc_request_alloc. See that function for - * explaination of why. + * explanation of why. */ return lrc_pin(ce, engine, vaddr); @@ -3385,18 +3443,29 @@ static inline int guc_lrc_desc_unpin(struct intel_context *ce) * GuC is active, lets destroy this context, but at this point we can still be racing * with suspend, so we undo everything if the H2G fails in deregister_context so * that GuC reset will find this context during clean up. + * + * There is a race condition where the reset code could have altered + * this context's state and done a wakeref put before we try to + * deregister it here. So check if the context is still set to be + * destroyed before undoing earlier changes, to avoid two wakeref puts + * on the same context. */ ret = deregister_context(ce, ce->guc_id.id); if (ret) { - spin_lock(&ce->guc_state.lock); - set_context_registered(ce); - clr_context_destroyed(ce); - spin_unlock(&ce->guc_state.lock); + bool pending_destroyed; + spin_lock_irqsave(&ce->guc_state.lock, flags); + pending_destroyed = context_destroyed(ce); + if (pending_destroyed) { + set_context_registered(ce); + clr_context_destroyed(ce); + } + spin_unlock_irqrestore(&ce->guc_state.lock, flags); /* * As gt-pm is awake at function entry, intel_wakeref_put_async merely decrements * the wakeref immediately but per function spec usage call this after unlock. */ - intel_wakeref_put_async(>->wakeref); + if (pending_destroyed) + intel_wakeref_put_async(>->wakeref); } return ret; @@ -5474,12 +5543,20 @@ static inline void guc_log_context(struct drm_printer *p, { drm_printf(p, "GuC lrc descriptor %u:\n", ce->guc_id.id); drm_printf(p, "\tHW Context Desc: 0x%08x\n", ce->lrc.lrca); - drm_printf(p, "\t\tLRC Head: Internal %u, Memory %u\n", - ce->ring->head, - ce->lrc_reg_state[CTX_RING_HEAD]); - drm_printf(p, "\t\tLRC Tail: Internal %u, Memory %u\n", - ce->ring->tail, - ce->lrc_reg_state[CTX_RING_TAIL]); + if (intel_context_pin_if_active(ce)) { + drm_printf(p, "\t\tLRC Head: Internal %u, Memory %u\n", + ce->ring->head, + ce->lrc_reg_state[CTX_RING_HEAD]); + drm_printf(p, "\t\tLRC Tail: Internal %u, Memory %u\n", + ce->ring->tail, + ce->lrc_reg_state[CTX_RING_TAIL]); + intel_context_unpin(ce); + } else { + drm_printf(p, "\t\tLRC Head: Internal %u, Memory not pinned\n", + ce->ring->head); + drm_printf(p, "\t\tLRC Tail: Internal %u, Memory not pinned\n", + ce->ring->tail); + } drm_printf(p, "\t\tContext Pin Count: %u\n", atomic_read(&ce->pin_count)); drm_printf(p, "\t\tGuC ID Ref Count: %u\n", |