43 static int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
186 int drm_lock_take(struct drm_lock_data *lock_data,  in drm_lock_take()  argument
190 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_take()
192 	spin_lock_bh(&lock_data->spinlock);  in drm_lock_take()
199 				((lock_data->user_waiters + lock_data->kernel_waiters > 1) ?  in drm_lock_take()
204 	spin_unlock_bh(&lock_data->spinlock);  in drm_lock_take()
235 static int drm_lock_transfer(struct drm_lock_data *lock_data,  in drm_lock_transfer()  argument
239 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_transfer()
241 	lock_data->file_priv = NULL;  in drm_lock_transfer()
261 int drm_legacy_lock_free(struct drm_lock_data *lock_data, unsigned int context)  in drm_legacy_lock_free()  argument
264 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_legacy_lock_free()
266 	spin_lock_bh(&lock_data->spinlock);  in drm_legacy_lock_free()
267 	if (lock_data->kernel_waiters != 0) {  in drm_legacy_lock_free()
268 		drm_lock_transfer(lock_data, 0);  in drm_legacy_lock_free()
269 		lock_data->idle_has_lock = 1;  in drm_legacy_lock_free()
270 		spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_lock_free()
273 	spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_lock_free()
286 	wake_up_interruptible(&lock_data->lock_queue);  in drm_legacy_lock_free()
335 void drm_legacy_idlelock_take(struct drm_lock_data *lock_data)  in drm_legacy_idlelock_take()  argument
339 	spin_lock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
340 	lock_data->kernel_waiters++;  in drm_legacy_idlelock_take()
341 	if (!lock_data->idle_has_lock) {  in drm_legacy_idlelock_take()
343 		spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
344 		ret = drm_lock_take(lock_data, DRM_KERNEL_CONTEXT);  in drm_legacy_idlelock_take()
345 		spin_lock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
348 			lock_data->idle_has_lock = 1;  in drm_legacy_idlelock_take()
350 	spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
354 void drm_legacy_idlelock_release(struct drm_lock_data *lock_data)  in drm_legacy_idlelock_release()  argument
357 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_legacy_idlelock_release()
359 	spin_lock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_release()
360 	if (--lock_data->kernel_waiters == 0) {  in drm_legacy_idlelock_release()
361 		if (lock_data->idle_has_lock) {  in drm_legacy_idlelock_release()
366 			wake_up_interruptible(&lock_data->lock_queue);  in drm_legacy_idlelock_release()
367 			lock_data->idle_has_lock = 0;  in drm_legacy_idlelock_release()
370 	spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_release()