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drm/radeon/kms: Schedule host path read cache flush through the ring V2

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R300 family will hard lockup if host path read cache flush is
done through MMIO to HOST_PATH_CNTL. But scheduling same flush
through ring seems harmless. This patch remove the hdp_flush
callback and add a flush after each fence emission which means
a flush after each IB schedule. Thus we should have same behavior
without the hard lockup.

Tested on R100,R200,R300,R400,R500,R600,R700 family.

V2: Adjust fence counts in r600_blit_prepare_copy()

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse
2010-01-07 12:39:21 +01:00
committed by Dave Airlie
parent 62cdc0c206
commit cafe6609d6
13 changed files with 33 additions and 32 deletions
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2
drivers/gpu/drm/radeon/radeon_gem.c
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@ -131,7 +131,6 @@ int radeon_gem_set_domain(struct drm_gem_object *gobj,
printk(KERN_ERR "Failed to wait for object !\n");
return r;
}
radeon_hdp_flush(robj->rdev);
}
return 0;
}
@ -312,7 +311,6 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(gobj);
mutex_unlock(&dev->struct_mutex);
radeon_hdp_flush(robj->rdev);
return r;
}