43 static int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
183 int drm_lock_take(struct drm_lock_data *lock_data,  in drm_lock_take()  argument
187 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_take()
189 	mtx_lock(&lock_data->spinlock);  in drm_lock_take()
196 				((lock_data->user_waiters + lock_data->kernel_waiters > 1) ?  in drm_lock_take()
201 	mtx_unlock(&lock_data->spinlock);  in drm_lock_take()
232 static int drm_lock_transfer(struct drm_lock_data *lock_data,  in drm_lock_transfer()  argument
236 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_transfer()
238 	lock_data->file_priv = NULL;  in drm_lock_transfer()
258 int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context)  in drm_lock_free()  argument
261 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_free()
263 	mtx_lock(&lock_data->spinlock);  in drm_lock_free()
264 	if (lock_data->kernel_waiters != 0) {  in drm_lock_free()
265 		drm_lock_transfer(lock_data, 0);  in drm_lock_free()
266 		lock_data->idle_has_lock = 1;  in drm_lock_free()
267 		mtx_unlock(&lock_data->spinlock);  in drm_lock_free()
270 	mtx_unlock(&lock_data->spinlock);  in drm_lock_free()
283 	wake_up_interruptible(&lock_data->lock_queue);  in drm_lock_free()
333 void drm_idlelock_take(struct drm_lock_data *lock_data)  in drm_idlelock_take()  argument
337 	mtx_lock(&lock_data->spinlock);  in drm_idlelock_take()
338 	lock_data->kernel_waiters++;  in drm_idlelock_take()
339 	if (!lock_data->idle_has_lock) {  in drm_idlelock_take()
341 		mtx_unlock(&lock_data->spinlock);  in drm_idlelock_take()
342 		ret = drm_lock_take(lock_data, DRM_KERNEL_CONTEXT);  in drm_idlelock_take()
343 		mtx_lock(&lock_data->spinlock);  in drm_idlelock_take()
346 			lock_data->idle_has_lock = 1;  in drm_idlelock_take()
348 	mtx_unlock(&lock_data->spinlock);  in drm_idlelock_take()
352 void drm_idlelock_release(struct drm_lock_data *lock_data)  in drm_idlelock_release()  argument
355 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_idlelock_release()
357 	mtx_lock(&lock_data->spinlock);  in drm_idlelock_release()
358 	if (--lock_data->kernel_waiters == 0) {  in drm_idlelock_release()
359 		if (lock_data->idle_has_lock) {  in drm_idlelock_release()
364 			wake_up_interruptible(&lock_data->lock_queue);  in drm_idlelock_release()
365 			lock_data->idle_has_lock = 0;  in drm_idlelock_release()
368 	mtx_unlock(&lock_data->spinlock);  in drm_idlelock_release()