Should be useful to know what the driver thought the other ring's seqno was when it last used a semaphore. Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk> --- drivers/gpu/drm/i915/i915_debugfs.c | 10 ++++++---- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_irq.c | 2 ++ 3 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index c52758c..5359f376 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -657,10 +657,12 @@ static void i915_ring_error_state(struct seq_file *m, if (INTEL_INFO(dev)->gen >= 6) { seq_printf(m, " RC PSMI: 0x%08x\n", error->rc_psmi[ring]); seq_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]); - seq_printf(m, " SYNC_0: 0x%08x\n", - error->semaphore_mboxes[ring][0]); - seq_printf(m, " SYNC_1: 0x%08x\n", - error->semaphore_mboxes[ring][1]); + seq_printf(m, " SYNC_0: 0x%08x [last synced 0x%08x]\n", + error->semaphore_mboxes[ring][0], + error->semaphore_seqno[ring][0]); + seq_printf(m, " SYNC_1: 0x%08x [last synced 0x%08x]\n", + error->semaphore_mboxes[ring][1], + error->semaphore_seqno[ring][1]); } seq_printf(m, " seqno: 0x%08x\n", error->seqno[ring]); seq_printf(m, " waiting: %s\n", yesno(error->waiting[ring])); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 23afc21..476aa94 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -199,6 +199,7 @@ struct drm_i915_error_state { u32 instdone[I915_NUM_RINGS]; u32 acthd[I915_NUM_RINGS]; u32 semaphore_mboxes[I915_NUM_RINGS][I915_NUM_RINGS - 1]; + u32 semaphore_seqno[I915_NUM_RINGS][I915_NUM_RINGS - 1]; u32 rc_psmi[I915_NUM_RINGS]; /* sleep state */ /* our own tracking of ring head and tail */ u32 cpu_ring_head[I915_NUM_RINGS]; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index bfb6c51..1f40090 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1156,6 +1156,8 @@ static void i915_record_ring_state(struct drm_device *dev, = I915_READ(RING_SYNC_0(ring->mmio_base)); error->semaphore_mboxes[ring->id][1] = I915_READ(RING_SYNC_1(ring->mmio_base)); + error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0]; + error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1]; } if (INTEL_INFO(dev)->gen >= 4) { -- 1.7.10.4