62 static void radeon_fence_write(struct radeon_device *rdev, u32 seq, int ring)  in radeon_fence_write()  argument
64 	struct radeon_fence_driver *drv = &rdev->fence_drv[ring];  in radeon_fence_write()
65 	if (likely(rdev->wb.enabled || !drv->scratch_reg)) {  in radeon_fence_write()
83 static u32 radeon_fence_read(struct radeon_device *rdev, int ring)  in radeon_fence_read()  argument
85 	struct radeon_fence_driver *drv = &rdev->fence_drv[ring];  in radeon_fence_read()
88 	if (likely(rdev->wb.enabled || !drv->scratch_reg)) {  in radeon_fence_read()
108 static void radeon_fence_schedule_check(struct radeon_device *rdev, int ring)  in radeon_fence_schedule_check()  argument
115 			   &rdev->fence_drv[ring].lockup_work,  in radeon_fence_schedule_check()
129 int radeon_fence_emit(struct radeon_device *rdev,  in radeon_fence_emit()  argument
133 	u64 seq = ++rdev->fence_drv[ring].sync_seq[ring];  in radeon_fence_emit()
140 	(*fence)->rdev = rdev;  in radeon_fence_emit()
145 		   &rdev->fence_queue.lock, rdev->fence_context + ring, seq);  in radeon_fence_emit()
146 	radeon_fence_ring_emit(rdev, ring, *fence);  in radeon_fence_emit()
147 	trace_radeon_fence_emit(rdev->ddev, ring, (*fence)->seq);  in radeon_fence_emit()
148 	radeon_fence_schedule_check(rdev, ring);  in radeon_fence_emit()
170 	seq = atomic64_read(&fence->rdev->fence_drv[fence->ring].last_seq);  in radeon_fence_check_signaled()
179 		radeon_irq_kms_sw_irq_put(fence->rdev, fence->ring);  in radeon_fence_check_signaled()
180 		__remove_wait_queue(&fence->rdev->fence_queue, &fence->fence_wake);  in radeon_fence_check_signaled()
197 static bool radeon_fence_activity(struct radeon_device *rdev, int ring)  in radeon_fence_activity()  argument
224 	last_seq = atomic64_read(&rdev->fence_drv[ring].last_seq);  in radeon_fence_activity()
226 		last_emitted = rdev->fence_drv[ring].sync_seq[ring];  in radeon_fence_activity()
227 		seq = radeon_fence_read(rdev, ring);  in radeon_fence_activity()
251 	} while (atomic64_xchg(&rdev->fence_drv[ring].last_seq, seq) > seq);  in radeon_fence_activity()
254 		radeon_fence_schedule_check(rdev, ring);  in radeon_fence_activity()
270 	struct radeon_device *rdev;  in radeon_fence_check_lockup()  local
275 	rdev = fence_drv->rdev;  in radeon_fence_check_lockup()
276 	ring = fence_drv - &rdev->fence_drv[0];  in radeon_fence_check_lockup()
278 	if (!down_read_trylock(&rdev->exclusive_lock)) {  in radeon_fence_check_lockup()
280 		radeon_fence_schedule_check(rdev, ring);  in radeon_fence_check_lockup()
284 	if (fence_drv->delayed_irq && rdev->ddev->irq_enabled) {  in radeon_fence_check_lockup()
288 		spin_lock_irqsave(&rdev->irq.lock, irqflags);  in radeon_fence_check_lockup()
289 		radeon_irq_set(rdev);  in radeon_fence_check_lockup()
290 		spin_unlock_irqrestore(&rdev->irq.lock, irqflags);  in radeon_fence_check_lockup()
293 	if (radeon_fence_activity(rdev, ring))  in radeon_fence_check_lockup()
294 		wake_up_all(&rdev->fence_queue);  in radeon_fence_check_lockup()
296 	else if (radeon_ring_is_lockup(rdev, ring, &rdev->ring[ring])) {  in radeon_fence_check_lockup()
299 		dev_warn(rdev->dev, "GPU lockup (current fence id "  in radeon_fence_check_lockup()
305 		rdev->needs_reset = true;  in radeon_fence_check_lockup()
306 		wake_up_all(&rdev->fence_queue);  in radeon_fence_check_lockup()
308 	up_read(&rdev->exclusive_lock);  in radeon_fence_check_lockup()
320 void radeon_fence_process(struct radeon_device *rdev, int ring)  in radeon_fence_process()  argument
322 	if (radeon_fence_activity(rdev, ring))  in radeon_fence_process()
323 		wake_up_all(&rdev->fence_queue);  in radeon_fence_process()
340 static bool radeon_fence_seq_signaled(struct radeon_device *rdev,  in radeon_fence_seq_signaled()  argument
343 	if (atomic64_read(&rdev->fence_drv[ring].last_seq) >= seq) {  in radeon_fence_seq_signaled()
347 	radeon_fence_process(rdev, ring);  in radeon_fence_seq_signaled()
348 	if (atomic64_read(&rdev->fence_drv[ring].last_seq) >= seq) {  in radeon_fence_seq_signaled()
357 	struct radeon_device *rdev = fence->rdev;  in radeon_fence_is_signaled()  local
361 	if (atomic64_read(&rdev->fence_drv[ring].last_seq) >= seq) {  in radeon_fence_is_signaled()
365 	if (down_read_trylock(&rdev->exclusive_lock)) {  in radeon_fence_is_signaled()
366 		radeon_fence_process(rdev, ring);  in radeon_fence_is_signaled()
367 		up_read(&rdev->exclusive_lock);  in radeon_fence_is_signaled()
369 		if (atomic64_read(&rdev->fence_drv[ring].last_seq) >= seq) {  in radeon_fence_is_signaled()
387 	struct radeon_device *rdev = fence->rdev;  in radeon_fence_enable_signaling()  local
389 	if (atomic64_read(&rdev->fence_drv[fence->ring].last_seq) >= fence->seq)  in radeon_fence_enable_signaling()
392 	if (down_read_trylock(&rdev->exclusive_lock)) {  in radeon_fence_enable_signaling()
393 		radeon_irq_kms_sw_irq_get(rdev, fence->ring);  in radeon_fence_enable_signaling()
395 		if (radeon_fence_activity(rdev, fence->ring))  in radeon_fence_enable_signaling()
396 			wake_up_all_locked(&rdev->fence_queue);  in radeon_fence_enable_signaling()
399 		if (atomic64_read(&rdev->fence_drv[fence->ring].last_seq) >= fence->seq) {  in radeon_fence_enable_signaling()
400 			radeon_irq_kms_sw_irq_put(rdev, fence->ring);  in radeon_fence_enable_signaling()
401 			up_read(&rdev->exclusive_lock);  in radeon_fence_enable_signaling()
405 		up_read(&rdev->exclusive_lock);  in radeon_fence_enable_signaling()
408 		if (radeon_irq_kms_sw_irq_get_delayed(rdev, fence->ring))  in radeon_fence_enable_signaling()
409 			rdev->fence_drv[fence->ring].delayed_irq = true;  in radeon_fence_enable_signaling()
410 		radeon_fence_schedule_check(rdev, fence->ring);  in radeon_fence_enable_signaling()
416 	__add_wait_queue(&rdev->fence_queue, &fence->fence_wake);  in radeon_fence_enable_signaling()
436 	if (radeon_fence_seq_signaled(fence->rdev, fence->seq, fence->ring)) {  in radeon_fence_signaled()
458 static bool radeon_fence_any_seq_signaled(struct radeon_device *rdev, u64 *seq)  in radeon_fence_any_seq_signaled()  argument
463 		if (seq[i] && radeon_fence_seq_signaled(rdev, seq[i], i))  in radeon_fence_any_seq_signaled()
486 static long radeon_fence_wait_seq_timeout(struct radeon_device *rdev,  in radeon_fence_wait_seq_timeout()  argument
493 	if (radeon_fence_any_seq_signaled(rdev, target_seq))  in radeon_fence_wait_seq_timeout()
501 		trace_radeon_fence_wait_begin(rdev->ddev, i, target_seq[i]);  in radeon_fence_wait_seq_timeout()
502 		radeon_irq_kms_sw_irq_get(rdev, i);  in radeon_fence_wait_seq_timeout()
506 		r = wait_event_interruptible_timeout(rdev->fence_queue, (  in radeon_fence_wait_seq_timeout()
507 			radeon_fence_any_seq_signaled(rdev, target_seq)  in radeon_fence_wait_seq_timeout()
508 			 || rdev->needs_reset), timeout);  in radeon_fence_wait_seq_timeout()
510 		r = wait_event_timeout(rdev->fence_queue, (  in radeon_fence_wait_seq_timeout()
511 			radeon_fence_any_seq_signaled(rdev, target_seq)  in radeon_fence_wait_seq_timeout()
512 			 || rdev->needs_reset), timeout);  in radeon_fence_wait_seq_timeout()
515 	if (rdev->needs_reset)  in radeon_fence_wait_seq_timeout()
522 		radeon_irq_kms_sw_irq_put(rdev, i);  in radeon_fence_wait_seq_timeout()
523 		trace_radeon_fence_wait_end(rdev->ddev, i, target_seq[i]);  in radeon_fence_wait_seq_timeout()
555 	r = radeon_fence_wait_seq_timeout(fence->rdev, seq, intr, MAX_SCHEDULE_TIMEOUT);  in radeon_fence_wait()
579 int radeon_fence_wait_any(struct radeon_device *rdev,  in radeon_fence_wait_any()  argument
602 	r = radeon_fence_wait_seq_timeout(rdev, seq, intr, MAX_SCHEDULE_TIMEOUT);  in radeon_fence_wait_any()
619 int radeon_fence_wait_next(struct radeon_device *rdev, int ring)  in radeon_fence_wait_next()  argument
624 	seq[ring] = atomic64_read(&rdev->fence_drv[ring].last_seq) + 1ULL;  in radeon_fence_wait_next()
625 	if (seq[ring] >= rdev->fence_drv[ring].sync_seq[ring]) {  in radeon_fence_wait_next()
630 	r = radeon_fence_wait_seq_timeout(rdev, seq, false, MAX_SCHEDULE_TIMEOUT);  in radeon_fence_wait_next()
646 int radeon_fence_wait_empty(struct radeon_device *rdev, int ring)  in radeon_fence_wait_empty()  argument
651 	seq[ring] = rdev->fence_drv[ring].sync_seq[ring];  in radeon_fence_wait_empty()
655 	r = radeon_fence_wait_seq_timeout(rdev, seq, false, MAX_SCHEDULE_TIMEOUT);  in radeon_fence_wait_empty()
660 		dev_err(rdev->dev, "error waiting for ring[%d] to become idle (%ld)\n",  in radeon_fence_wait_empty()
707 unsigned radeon_fence_count_emitted(struct radeon_device *rdev, int ring)  in radeon_fence_count_emitted()  argument
714 	radeon_fence_process(rdev, ring);  in radeon_fence_count_emitted()
715 	emitted = rdev->fence_drv[ring].sync_seq[ring]  in radeon_fence_count_emitted()
716 		- atomic64_read(&rdev->fence_drv[ring].last_seq);  in radeon_fence_count_emitted()
748 	fdrv = &fence->rdev->fence_drv[dst_ring];  in radeon_fence_need_sync()
779 	src = &fence->rdev->fence_drv[fence->ring];  in radeon_fence_note_sync()
780 	dst = &fence->rdev->fence_drv[dst_ring];  in radeon_fence_note_sync()
801 int radeon_fence_driver_start_ring(struct radeon_device *rdev, int ring)  in radeon_fence_driver_start_ring()  argument
806 	radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg);  in radeon_fence_driver_start_ring()
807 	if (rdev->wb.use_event || !radeon_ring_supports_scratch_reg(rdev, &rdev->ring[ring])) {  in radeon_fence_driver_start_ring()
808 		rdev->fence_drv[ring].scratch_reg = 0;  in radeon_fence_driver_start_ring()
811 			rdev->fence_drv[ring].cpu_addr = &rdev->wb.wb[index/4];  in radeon_fence_driver_start_ring()
812 			rdev->fence_drv[ring].gpu_addr = rdev->wb.gpu_addr +  in radeon_fence_driver_start_ring()
817 			index = ALIGN(rdev->uvd_fw->size, 8);  in radeon_fence_driver_start_ring()
818 			rdev->fence_drv[ring].cpu_addr = rdev->uvd.cpu_addr + index;  in radeon_fence_driver_start_ring()
819 			rdev->fence_drv[ring].gpu_addr = rdev->uvd.gpu_addr + index;  in radeon_fence_driver_start_ring()
823 		r = radeon_scratch_get(rdev, &rdev->fence_drv[ring].scratch_reg);  in radeon_fence_driver_start_ring()
825 			dev_err(rdev->dev, "fence failed to get scratch register\n");  in radeon_fence_driver_start_ring()
829 			rdev->fence_drv[ring].scratch_reg -  in radeon_fence_driver_start_ring()
830 			rdev->scratch.reg_base;  in radeon_fence_driver_start_ring()
831 		rdev->fence_drv[ring].cpu_addr = &rdev->wb.wb[index/4];  in radeon_fence_driver_start_ring()
832 		rdev->fence_drv[ring].gpu_addr = rdev->wb.gpu_addr + index;  in radeon_fence_driver_start_ring()
834 	radeon_fence_write(rdev, atomic64_read(&rdev->fence_drv[ring].last_seq), ring);  in radeon_fence_driver_start_ring()
835 	rdev->fence_drv[ring].initialized = true;  in radeon_fence_driver_start_ring()
836 	dev_info(rdev->dev, "fence driver on ring %d use gpu addr 0x%016llx and cpu addr 0x%p\n",  in radeon_fence_driver_start_ring()
837 		 ring, rdev->fence_drv[ring].gpu_addr, rdev->fence_drv[ring].cpu_addr);  in radeon_fence_driver_start_ring()
851 static void radeon_fence_driver_init_ring(struct radeon_device *rdev, int ring)  in radeon_fence_driver_init_ring()  argument
855 	rdev->fence_drv[ring].scratch_reg = -1;  in radeon_fence_driver_init_ring()
856 	rdev->fence_drv[ring].cpu_addr = NULL;  in radeon_fence_driver_init_ring()
857 	rdev->fence_drv[ring].gpu_addr = 0;  in radeon_fence_driver_init_ring()
859 		rdev->fence_drv[ring].sync_seq[i] = 0;  in radeon_fence_driver_init_ring()
860 	atomic64_set(&rdev->fence_drv[ring].last_seq, 0);  in radeon_fence_driver_init_ring()
861 	rdev->fence_drv[ring].initialized = false;  in radeon_fence_driver_init_ring()
862 	INIT_DELAYED_WORK(&rdev->fence_drv[ring].lockup_work,  in radeon_fence_driver_init_ring()
864 	rdev->fence_drv[ring].rdev = rdev;  in radeon_fence_driver_init_ring()
879 int radeon_fence_driver_init(struct radeon_device *rdev)  in radeon_fence_driver_init()  argument
883 	init_waitqueue_head(&rdev->fence_queue);  in radeon_fence_driver_init()
885 		radeon_fence_driver_init_ring(rdev, ring);  in radeon_fence_driver_init()
887 	if (radeon_debugfs_fence_init(rdev)) {  in radeon_fence_driver_init()
888 		dev_err(rdev->dev, "fence debugfs file creation failed\n");  in radeon_fence_driver_init()
901 void radeon_fence_driver_fini(struct radeon_device *rdev)  in radeon_fence_driver_fini()  argument
905 	mutex_lock(&rdev->ring_lock);  in radeon_fence_driver_fini()
907 		if (!rdev->fence_drv[ring].initialized)  in radeon_fence_driver_fini()
909 		r = radeon_fence_wait_empty(rdev, ring);  in radeon_fence_driver_fini()
912 			radeon_fence_driver_force_completion(rdev, ring);  in radeon_fence_driver_fini()
914 		cancel_delayed_work_sync(&rdev->fence_drv[ring].lockup_work);  in radeon_fence_driver_fini()
915 		wake_up_all(&rdev->fence_queue);  in radeon_fence_driver_fini()
916 		radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg);  in radeon_fence_driver_fini()
917 		rdev->fence_drv[ring].initialized = false;  in radeon_fence_driver_fini()
919 	mutex_unlock(&rdev->ring_lock);  in radeon_fence_driver_fini()
931 void radeon_fence_driver_force_completion(struct radeon_device *rdev, int ring)  in radeon_fence_driver_force_completion()  argument
933 	if (rdev->fence_drv[ring].initialized) {  in radeon_fence_driver_force_completion()
934 		radeon_fence_write(rdev, rdev->fence_drv[ring].sync_seq[ring], ring);  in radeon_fence_driver_force_completion()
935 		cancel_delayed_work_sync(&rdev->fence_drv[ring].lockup_work);  in radeon_fence_driver_force_completion()
948 	struct radeon_device *rdev = dev->dev_private;  in radeon_debugfs_fence_info()  local
952 		if (!rdev->fence_drv[i].initialized)  in radeon_debugfs_fence_info()
955 		radeon_fence_process(rdev, i);  in radeon_debugfs_fence_info()
959 			   (unsigned long long)atomic64_read(&rdev->fence_drv[i].last_seq));  in radeon_debugfs_fence_info()
961 			   rdev->fence_drv[i].sync_seq[i]);  in radeon_debugfs_fence_info()
964 			if (i != j && rdev->fence_drv[j].initialized)  in radeon_debugfs_fence_info()
966 					   j, rdev->fence_drv[i].sync_seq[j]);  in radeon_debugfs_fence_info()
981 	struct radeon_device *rdev = dev->dev_private;  in radeon_debugfs_gpu_reset()  local
983 	down_read(&rdev->exclusive_lock);  in radeon_debugfs_gpu_reset()
984 	seq_printf(m, "%d\n", rdev->needs_reset);  in radeon_debugfs_gpu_reset()
985 	rdev->needs_reset = true;  in radeon_debugfs_gpu_reset()
986 	wake_up_all(&rdev->fence_queue);  in radeon_debugfs_gpu_reset()
987 	up_read(&rdev->exclusive_lock);  in radeon_debugfs_gpu_reset()
998 int radeon_debugfs_fence_init(struct radeon_device *rdev)  in radeon_debugfs_fence_init()  argument
1001 	return radeon_debugfs_add_files(rdev, radeon_debugfs_fence_list, 2);  in radeon_debugfs_fence_init()
1051 	struct radeon_device *rdev = fence->rdev;  in radeon_fence_default_wait()  local
1072 		if (rdev->needs_reset) {  in radeon_fence_default_wait()