[Intel-gfx] [PATCH v2 2/4] drm/i915: Always clear semaphore mboxes on seqno wrap

Mika Kuoppala mika.kuoppala at linux.intel.com
Tue Dec 18 18:26:19 CET 2012


In preparation for setting the seqno to arbitrary value on init or
through debugfs. We need to always clear the semaphores and set the
hws page seqno index by calling intel_ring_init_seqno().

v2: rewrote the commit message as suggested by Chris Wilson.

Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c |   12 ------------
 1 file changed, 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 396be20..53442ea 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1932,18 +1932,6 @@ i915_gem_handle_seqno_wrap(struct drm_device *dev)
 	struct intel_ring_buffer *ring;
 	int ret, i, j;
 
-	/* The hardware uses various monotonic 32-bit counters, if we
-	 * detect that they will wraparound we need to idle the GPU
-	 * and reset those counters.
-	 */
-	ret = 0;
-	for_each_ring(ring, dev_priv, i) {
-		for (j = 0; j < ARRAY_SIZE(ring->sync_seqno); j++)
-			ret |= ring->sync_seqno[j] != 0;
-	}
-	if (ret == 0)
-		return ret;
-
 	/* Carefully retire all requests without writing to the rings */
 	for_each_ring(ring, dev_priv, i) {
 		ret = intel_ring_idle(ring);
-- 
1.7.9.5




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