1 files changed, 60 insertions, 0 deletions
diff --git a/linux/ffb_context.c b/linux/ffb_context.c
index ffc9b090..add2a743 100644
--- a/linux/ffb_context.c
+++ b/linux/ffb_context.c
@@ -537,3 +537,63 @@ int DRM(rmctx)(struct inode *inode, struct file *filp, unsigned int cmd,
 	}
 	return 0;
 }
+
+static void ffb_driver_release(drm_device_t *dev)
+{
+	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
+	int context = _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock);
+	int idx;
+
+	idx = context - 1;
+	if (fpriv &&
+	    context != DRM_KERNEL_CONTEXT &&
+	    fpriv->hw_state[idx] != NULL) {
+		kfree(fpriv->hw_state[idx]);
+		fpriv->hw_state[idx] = NULL;
+	}	
+}
+
+static int ffb_driver_presetup(drm_device_t *dev)
+{
+	int ret;
+	ret = ffb_presetup(dev);
+	if (_ret != 0) return ret;
+}
+
+static void ffb_driver_pretakedown(drm_device_t *dev)
+{
+	if (dev->dev_private) kfree(dev->dev_private);
+}
+
+static void ffb_driver_postcleanup(drm_device_t *dev)
+{
+	if (ffb_position != NULL) kfree(ffb_position);
+}
+
+static int ffb_driver_kernel_context_switch_unlock(struct drm_device *dev)
+{
+	dev->lock.filp = 0;
+	{
+		__volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
+		unsigned int old, new, prev, ctx;
+		
+		ctx = lock.context;
+		do {
+			old  = *plock;
+			new  = ctx;
+			prev = cmpxchg(plock, old, new);
+		} while (prev != old);
+	}
+	wake_up_interruptible(&dev->lock.lock_queue);
+}
+
+static void ffb_driver_register_fns(drm_device_t *dev)
+{
+	DRM(fops).get_unmapped_area = ffb_get_unmapped_area;
+	dev->fn_tbl.release = ffb_driver_release;
+	dev->fn_tbl.presetup = ffb_driver_presetup;
+	dev->fn_tbl.pretakedown = ffb_driver_pretakedown;
+	dev->fn_tbl.postcleanup = ffb_driver_postcleanup;
+	dev->fn_tbl.kernel_context_switch = ffb_context_switch;
+	dev->fn_tbl.kernel_context_switch_unlock = ffb_driver_kernel_context_switch_unlock;
+}