From 92cab7345131db7af18f630a799ce6b2e8e624c5 Mon Sep 17 00:00:00 2001 From: Mika Kuoppala Date: Fri, 24 May 2013 17:16:07 +0300 Subject: [PATCH] drm/i915: track ring progression using seqnos Instead of relying in acthd, track ring seqno progression to detect if ring has hung. v2: put hangcheck stuff inside struct (Chris Wilson) v3: initialize hangcheck.seqno (Ben Widawsky) Signed-off-by: Mika Kuoppala Reviewed-by: Ben Widawsky Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 2 -- drivers/gpu/drm/i915/i915_irq.c | 30 +++++++++++-------------- drivers/gpu/drm/i915/intel_ringbuffer.c | 1 + drivers/gpu/drm/i915/intel_ringbuffer.h | 6 +++++ 4 files changed, 20 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index e09c54c73a22..e417049ea581 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -842,8 +842,6 @@ struct i915_gpu_error { #define DRM_I915_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD) struct timer_list hangcheck_timer; int hangcheck_count; - uint32_t last_acthd[I915_NUM_RINGS]; - uint32_t prev_instdone[I915_NUM_INSTDONE_REG]; /* For reset and error_state handling. */ spinlock_t lock; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0e5c9b0cc5a6..004ad3455992 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2384,22 +2384,19 @@ void i915_hangcheck_elapsed(unsigned long data) { struct drm_device *dev = (struct drm_device *)data; drm_i915_private_t *dev_priv = dev->dev_private; - uint32_t acthd[I915_NUM_RINGS], instdone[I915_NUM_INSTDONE_REG]; struct intel_ring_buffer *ring; bool err = false, idle; int i; + u32 seqno[I915_NUM_RINGS]; + bool work_done; if (!i915_enable_hangcheck) return; - memset(acthd, 0, sizeof(acthd)); idle = true; for_each_ring(ring, dev_priv, i) { - u32 seqno; - - seqno = ring->get_seqno(ring, false); - idle &= i915_hangcheck_ring_idle(ring, seqno, &err); - acthd[i] = intel_ring_get_active_head(ring); + seqno[i] = ring->get_seqno(ring, false); + idle &= i915_hangcheck_ring_idle(ring, seqno[i], &err); } /* If all work is done then ACTHD clearly hasn't advanced. */ @@ -2415,20 +2412,19 @@ void i915_hangcheck_elapsed(unsigned long data) return; } - i915_get_extra_instdone(dev, instdone); - if (memcmp(dev_priv->gpu_error.last_acthd, acthd, - sizeof(acthd)) == 0 && - memcmp(dev_priv->gpu_error.prev_instdone, instdone, - sizeof(instdone)) == 0) { + work_done = false; + for_each_ring(ring, dev_priv, i) { + if (ring->hangcheck.seqno != seqno[i]) { + work_done = true; + ring->hangcheck.seqno = seqno[i]; + } + } + + if (!work_done) { if (i915_hangcheck_hung(dev)) return; } else { dev_priv->gpu_error.hangcheck_count = 0; - - memcpy(dev_priv->gpu_error.last_acthd, acthd, - sizeof(acthd)); - memcpy(dev_priv->gpu_error.prev_instdone, instdone, - sizeof(instdone)); } repeat: diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 3d2c236e15ab..5698faeee6f6 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1502,6 +1502,7 @@ void intel_ring_init_seqno(struct intel_ring_buffer *ring, u32 seqno) } ring->set_seqno(ring, seqno); + ring->hangcheck.seqno = seqno; } void intel_ring_advance(struct intel_ring_buffer *ring) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index dac1614a1bca..ef374a892105 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -37,6 +37,10 @@ struct intel_hw_status_page { #define I915_READ_SYNC_0(ring) I915_READ(RING_SYNC_0((ring)->mmio_base)) #define I915_READ_SYNC_1(ring) I915_READ(RING_SYNC_1((ring)->mmio_base)) +struct intel_ring_hangcheck { + u32 seqno; +}; + struct intel_ring_buffer { const char *name; enum intel_ring_id { @@ -137,6 +141,8 @@ struct intel_ring_buffer { struct i915_hw_context *default_context; struct i915_hw_context *last_context; + struct intel_ring_hangcheck hangcheck; + void *private; };