diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_rps.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_rps.c | 45 |
1 files changed, 28 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c index 30ae29b30f11..87f9638d2cbf 100644 --- a/drivers/gpu/drm/i915/gt/intel_rps.c +++ b/drivers/gpu/drm/i915/gt/intel_rps.c @@ -4,6 +4,8 @@ * Copyright © 2019 Intel Corporation */ +#include <drm/i915_drm.h> + #include "i915_drv.h" #include "intel_gt.h" #include "intel_gt_irq.h" @@ -55,7 +57,7 @@ static u32 rps_pm_mask(struct intel_rps *rps, u8 val) if (val < rps->max_freq_softlimit) mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD; - mask &= rps->pm_events; + mask &= READ_ONCE(rps->pm_events); return rps_pm_sanitize_mask(rps, ~mask); } @@ -68,17 +70,19 @@ static void rps_reset_ei(struct intel_rps *rps) static void rps_enable_interrupts(struct intel_rps *rps) { struct intel_gt *gt = rps_to_gt(rps); + u32 events; rps_reset_ei(rps); if (IS_VALLEYVIEW(gt->i915)) /* WaGsvRC0ResidencyMethod:vlv */ - rps->pm_events = GEN6_PM_RP_UP_EI_EXPIRED; + events = GEN6_PM_RP_UP_EI_EXPIRED; else - rps->pm_events = (GEN6_PM_RP_UP_THRESHOLD | - GEN6_PM_RP_DOWN_THRESHOLD | - GEN6_PM_RP_DOWN_TIMEOUT); + events = (GEN6_PM_RP_UP_THRESHOLD | + GEN6_PM_RP_DOWN_THRESHOLD | + GEN6_PM_RP_DOWN_TIMEOUT); + WRITE_ONCE(rps->pm_events, events); spin_lock_irq(>->irq_lock); gen6_gt_pm_enable_irq(gt, rps->pm_events); spin_unlock_irq(>->irq_lock); @@ -115,8 +119,7 @@ static void rps_disable_interrupts(struct intel_rps *rps) { struct intel_gt *gt = rps_to_gt(rps); - rps->pm_events = 0; - + WRITE_ONCE(rps->pm_events, 0); set(gt->uncore, GEN6_PMINTRMSK, rps_pm_sanitize_mask(rps, ~0u)); spin_lock_irq(>->irq_lock); @@ -642,7 +645,7 @@ void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive) { mutex_lock(&rps->power.mutex); if (interactive) { - if (!rps->power.interactive++ && rps->active) + if (!rps->power.interactive++ && READ_ONCE(rps->active)) rps_set_power(rps, HIGH_POWER); } else { GEM_BUG_ON(!rps->power.interactive); @@ -719,11 +722,15 @@ void intel_rps_unpark(struct intel_rps *rps) * performance, jump directly to RPe as our starting frequency. */ mutex_lock(&rps->lock); - rps->active = true; + + WRITE_ONCE(rps->active, true); + freq = max(rps->cur_freq, rps->efficient_freq), freq = clamp(freq, rps->min_freq_softlimit, rps->max_freq_softlimit); intel_rps_set(rps, freq); + rps->last_adj = 0; + mutex_unlock(&rps->lock); if (INTEL_GEN(rps_to_i915(rps)) >= 6) @@ -743,7 +750,7 @@ void intel_rps_park(struct intel_rps *rps) if (INTEL_GEN(i915) >= 6) rps_disable_interrupts(rps); - rps->active = false; + WRITE_ONCE(rps->active, false); if (rps->last_freq <= rps->idle_freq) return; @@ -767,10 +774,10 @@ void intel_rps_park(struct intel_rps *rps) void intel_rps_boost(struct i915_request *rq) { - struct intel_rps *rps = &rq->engine->gt->rps; + struct intel_rps *rps = &READ_ONCE(rq->engine)->gt->rps; unsigned long flags; - if (i915_request_signaled(rq) || !rps->active) + if (i915_request_signaled(rq) || !READ_ONCE(rps->active)) return; /* Serializes with i915_request_retire() */ @@ -1453,12 +1460,12 @@ static void rps_work(struct work_struct *work) u32 pm_iir = 0; spin_lock_irq(>->irq_lock); - pm_iir = fetch_and_zero(&rps->pm_iir); + pm_iir = fetch_and_zero(&rps->pm_iir) & READ_ONCE(rps->pm_events); client_boost = atomic_read(&rps->num_waiters); spin_unlock_irq(>->irq_lock); /* Make sure we didn't queue anything we're not going to process. */ - if ((pm_iir & rps->pm_events) == 0 && !client_boost) + if (!pm_iir && !client_boost) goto out; mutex_lock(&rps->lock); @@ -1554,11 +1561,15 @@ void gen11_rps_irq_handler(struct intel_rps *rps, u32 pm_iir) void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir) { struct intel_gt *gt = rps_to_gt(rps); + u32 events; - if (pm_iir & rps->pm_events) { + events = pm_iir & READ_ONCE(rps->pm_events); + if (events) { spin_lock(>->irq_lock); - gen6_gt_pm_mask_irq(gt, pm_iir & rps->pm_events); - rps->pm_iir |= pm_iir & rps->pm_events; + + gen6_gt_pm_mask_irq(gt, events); + rps->pm_iir |= events; + schedule_work(&rps->work); spin_unlock(>->irq_lock); } |