47 static int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
59 int drm_lock_take(struct drm_lock_data *lock_data,  in drm_lock_take()  argument
63 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_take()
65 	spin_lock_bh(&lock_data->spinlock);  in drm_lock_take()
72 				((lock_data->user_waiters + lock_data->kernel_waiters > 1) ?  in drm_lock_take()
77 	spin_unlock_bh(&lock_data->spinlock);  in drm_lock_take()
108 static int drm_lock_transfer(struct drm_lock_data *lock_data,  in drm_lock_transfer()  argument
112 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_lock_transfer()
114 	lock_data->file_priv = NULL;  in drm_lock_transfer()
123 static int drm_legacy_lock_free(struct drm_lock_data *lock_data,  in drm_legacy_lock_free()  argument
127 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_legacy_lock_free()
129 	spin_lock_bh(&lock_data->spinlock);  in drm_legacy_lock_free()
130 	if (lock_data->kernel_waiters != 0) {  in drm_legacy_lock_free()
131 		drm_lock_transfer(lock_data, 0);  in drm_legacy_lock_free()
132 		lock_data->idle_has_lock = 1;  in drm_legacy_lock_free()
133 		spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_lock_free()
136 	spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_lock_free()
149 	wake_up_interruptible(&lock_data->lock_queue);  in drm_legacy_lock_free()
290 void drm_legacy_idlelock_take(struct drm_lock_data *lock_data)  in drm_legacy_idlelock_take()  argument
294 	spin_lock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
295 	lock_data->kernel_waiters++;  in drm_legacy_idlelock_take()
296 	if (!lock_data->idle_has_lock) {  in drm_legacy_idlelock_take()
298 		spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
299 		ret = drm_lock_take(lock_data, DRM_KERNEL_CONTEXT);  in drm_legacy_idlelock_take()
300 		spin_lock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
303 			lock_data->idle_has_lock = 1;  in drm_legacy_idlelock_take()
305 	spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_take()
309 void drm_legacy_idlelock_release(struct drm_lock_data *lock_data)  in drm_legacy_idlelock_release()  argument
312 	volatile unsigned int *lock = &lock_data->hw_lock->lock;  in drm_legacy_idlelock_release()
314 	spin_lock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_release()
315 	if (--lock_data->kernel_waiters == 0) {  in drm_legacy_idlelock_release()
316 		if (lock_data->idle_has_lock) {  in drm_legacy_idlelock_release()
321 			wake_up_interruptible(&lock_data->lock_queue);  in drm_legacy_idlelock_release()
322 			lock_data->idle_has_lock = 0;  in drm_legacy_idlelock_release()
325 	spin_unlock_bh(&lock_data->spinlock);  in drm_legacy_idlelock_release()