Cross Reference: /src/sys/external/bsd/drm2/dist/drm/vmwgfx/ttm

Lines Matching refs:lock
50 void ttm_lock_init(struct ttm_lock *lock)
52 	spin_lock_init(&lock->lock);
53 	DRM_INIT_WAITQUEUE(&lock->queue, "ttmlock");
54 	lock->rw = 0;
55 	lock->flags = 0;
58 void ttm_read_unlock(struct ttm_lock *lock)
60 	spin_lock(&lock->lock);
61 	if (--lock->rw == 0)
62 		DRM_SPIN_WAKEUP_ALL(&lock->queue, &lock->lock);
63 	spin_unlock(&lock->lock);
66 static bool __ttm_read_lock(struct ttm_lock *lock)
70 	if (lock->rw >= 0 && lock->flags == 0) {
71 		++lock->rw;
77 int ttm_read_lock(struct ttm_lock *lock, bool interruptible)
81 	spin_lock(&lock->lock);
83 		DRM_SPIN_WAIT_UNTIL(ret, &lock->queue, &lock->lock,
84 		    __ttm_read_lock(lock));
86 		DRM_SPIN_WAIT_NOINTR_UNTIL(ret, &lock->queue, &lock->lock,
87 		    __ttm_read_lock(lock));
88 	spin_unlock(&lock->lock);
93 static bool __ttm_read_trylock(struct ttm_lock *lock, bool *locked)
99 	spin_lock(&lock->lock);
100 	if (lock->rw >= 0 && lock->flags == 0) {
101 		++lock->rw;
104 	} else if (lock->flags == 0) {
107 	spin_unlock(&lock->lock);
112 int ttm_read_trylock(struct ttm_lock *lock, bool interruptible)
117 	spin_lock(&lock->lock);
119 		DRM_SPIN_WAIT_UNTIL(ret, &lock->queue, &lock->lock,
120 		    __ttm_read_trylock(lock, &locked));
122 		DRM_SPIN_WAIT_NOINTR_UNTIL(ret, &lock->queue, &lock->lock,
123 		    __ttm_read_trylock(lock, &locked));
124 	spin_unlock(&lock->lock);
134 void ttm_write_unlock(struct ttm_lock *lock)
136 	spin_lock(&lock->lock);
137 	lock->rw = 0;
138 	DRM_SPIN_WAKEUP_ALL(&lock->queue, &lock->lock);
139 	spin_unlock(&lock->lock);
142 static bool __ttm_write_lock(struct ttm_lock *lock)
146 	spin_lock(&lock->lock);
147 	if (lock->rw == 0 && ((lock->flags & ~TTM_WRITE_LOCK_PENDING) == 0)) {
148 		lock->rw = -1;
149 		lock->flags &= ~TTM_WRITE_LOCK_PENDING;
152 		lock->flags |= TTM_WRITE_LOCK_PENDING;
154 	spin_unlock(&lock->lock);
158 int ttm_write_lock(struct ttm_lock *lock, bool interruptible)
162 	spin_lock(&lock->lock);
164 		DRM_SPIN_WAIT_UNTIL(ret, &lock->queue, &lock->lock,
165 		    __ttm_write_lock(lock));
167 			lock->flags &= ~TTM_WRITE_LOCK_PENDING;
168 			DRM_SPIN_WAKEUP_ONE(&lock->queue, &lock->lock);
171 		DRM_SPIN_WAIT_NOINTR_UNTIL(ret, &lock->queue, &lock->lock,
172 		    __ttm_write_lock(lock));
173 	spin_unlock(&lock->lock);
178 void ttm_suspend_unlock(struct ttm_lock *lock)
180 	spin_lock(&lock->lock);
181 	lock->flags &= ~TTM_SUSPEND_LOCK;
182 	DRM_SPIN_WAKEUP_ALL(&lock->queue, &lock->lock);
183 	spin_unlock(&lock->lock);
186 static bool __ttm_suspend_lock(struct ttm_lock *lock)
190 	if (lock->rw == 0) {
191 		lock->flags &= ~TTM_SUSPEND_LOCK_PENDING;
192 		lock->flags |= TTM_SUSPEND_LOCK;
195 		lock->flags |= TTM_SUSPEND_LOCK_PENDING;
200 void ttm_suspend_lock(struct ttm_lock *lock)
204 	spin_lock(&lock->lock);
205 	DRM_SPIN_WAIT_UNTIL(ret, &lock->queue, &lock->lock,
206 	    __ttm_suspend_lock(lock));
207 	spin_unlock(&lock->lock);
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