Commit d3a6d446 authored by Keith Packard's avatar Keith Packard Committed by Dave Airlie
Browse files

i915: Track progress inside of batchbuffers for determining wedgedness.



This avoids early termination for long-running commands.
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent ed4cb414
......@@ -40,11 +40,15 @@ int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
{
drm_i915_private_t *dev_priv = dev->dev_private;
drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
u32 last_acthd = I915_READ(acthd_reg);
u32 acthd;
u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
int i;
for (i = 0; i < 10000; i++) {
for (i = 0; i < 100000; i++) {
ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
acthd = I915_READ(acthd_reg);
ring->space = ring->head - (ring->tail + 8);
if (ring->space < 0)
ring->space += ring->Size;
......@@ -55,8 +59,13 @@ int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
if (ring->head != last_head)
i = 0;
if (acthd != last_acthd)
i = 0;
last_head = ring->head;
last_acthd = acthd;
msleep_interruptible(10);
}
return -EBUSY;
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment