52  * are no longer in use by the associated ring on the GPU and
63  * @ring: ring index the fence is associated with
67 static void radeon_fence_write(struct radeon_device *rdev, u32 seq, int ring)  in radeon_fence_write()  argument
69 	struct radeon_fence_driver *drv = &rdev->fence_drv[ring];  in radeon_fence_write()
83  * @ring: ring index the fence is associated with
88 static u32 radeon_fence_read(struct radeon_device *rdev, int ring)  in radeon_fence_read()  argument
90 	struct radeon_fence_driver *drv = &rdev->fence_drv[ring];  in radeon_fence_read()
109  * @ring: ring index we should work with
113 static void radeon_fence_schedule_check(struct radeon_device *rdev, int ring)  in radeon_fence_schedule_check()  argument
120 			   &rdev->fence_drv[ring].lockup_work,  in radeon_fence_schedule_check()
125  * radeon_fence_emit - emit a fence on the requested ring
129  * @ring: ring index the fence is associated with
131  * Emits a fence command on the requested ring (all asics).
136 		      int ring)  in radeon_fence_emit()  argument
140 	/* we are protected by the ring emission mutex */  in radeon_fence_emit()
146 	(*fence)->seq = seq = ++rdev->fence_drv[ring].sync_seq[ring];  in radeon_fence_emit()
147 	(*fence)->ring = ring;  in radeon_fence_emit()
151 		       rdev->fence_context + ring,  in radeon_fence_emit()
153 	radeon_fence_ring_emit(rdev, ring, *fence);  in radeon_fence_emit()
154 	trace_radeon_fence_emit(rdev->ddev, ring, (*fence)->seq);  in radeon_fence_emit()
155 	radeon_fence_schedule_check(rdev, ring);  in radeon_fence_emit()
177 	seq = atomic64_read(&fence->rdev->fence_drv[fence->ring].last_seq);  in radeon_fence_check_signaled()
180 		radeon_irq_kms_sw_irq_put(fence->rdev, fence->ring);  in radeon_fence_check_signaled()
191  * @ring: ring index the fence is associated with
195  * on the ring, and the fence_queue should be waken up.
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()
271 	int ring;  in radeon_fence_check_lockup()  local
276 	ring = fence_drv - &rdev->fence_drv[0];  in radeon_fence_check_lockup()
280 		radeon_fence_schedule_check(rdev, ring);  in radeon_fence_check_lockup()
293 	if (radeon_fence_activity(rdev, ring))  in radeon_fence_check_lockup()
296 	else if (radeon_ring_is_lockup(rdev, ring, &rdev->ring[ring])) {  in radeon_fence_check_lockup()
300 			 "0x%016llx last fence id 0x%016llx on ring %d)\n",  in radeon_fence_check_lockup()
302 			 fence_drv->sync_seq[ring], ring);  in radeon_fence_check_lockup()
315  * @ring: ring index the fence is associated with
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()
331  * @ring: ring index the fence is associated with
341 				      u64 seq, unsigned ring)  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()
358 	unsigned ring = fence->ring;  in radeon_fence_is_signaled()  local
361 	if (atomic64_read(&rdev->fence_drv[ring].last_seq) >= seq) {  in radeon_fence_is_signaled()
366 		radeon_fence_process(rdev, ring);  in radeon_fence_is_signaled()
369 		if (atomic64_read(&rdev->fence_drv[ring].last_seq) >= seq) {  in radeon_fence_is_signaled()
389 	if (atomic64_read(&rdev->fence_drv[fence->ring].last_seq) >= fence->seq)  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()
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()
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()
434 	if (radeon_fence_seq_signaled(fence->rdev, fence->seq, fence->ring)) {  in radeon_fence_signaled()
471  * Wait for the requested sequence number(s) to be written by any ring
472  * (all asics).  Sequnce number array is indexed by ring id.
550 	seq[fence->ring] = fence->seq;  in radeon_fence_wait_timeout()
582  * radeon_fence_wait_any - wait for a fence to signal on any ring
589  * array is indexed by ring id.  @intr selects whether to use
628  * @ring: ring index the fence is associated with
630  * Wait for the next fence on the requested ring to signal (all asics).
632  * Caller must hold ring lock.
634 int radeon_fence_wait_next(struct radeon_device *rdev, int ring)  in radeon_fence_wait_next()  argument
639 	seq[ring] = atomic64_read(&rdev->fence_drv[ring].last_seq) + 1ULL;  in radeon_fence_wait_next()
640 	if (seq[ring] >= rdev->fence_drv[ring].sync_seq[ring]) {  in radeon_fence_wait_next()
655  * @ring: ring index the fence is associated with
657  * Wait for all fences on the requested ring to signal (all asics).
659  * Caller must hold ring lock.
661 int radeon_fence_wait_empty(struct radeon_device *rdev, int ring)  in radeon_fence_wait_empty()  argument
666 	seq[ring] = rdev->fence_drv[ring].sync_seq[ring];  in radeon_fence_wait_empty()
667 	if (!seq[ring])  in radeon_fence_wait_empty()
675 		dev_err(rdev->dev, "error waiting for ring[%d] to become idle (%ld)\n",  in radeon_fence_wait_empty()
676 			ring, r);  in radeon_fence_wait_empty()
716  * @ring: ring index the fence is associated with
718  * Get the number of fences emitted on the requested ring (all asics).
719  * Returns the number of emitted fences on the ring.  Used by the
720  * dynpm code to ring track activity.
722 unsigned radeon_fence_count_emitted(struct radeon_device *rdev, int ring)  in radeon_fence_count_emitted()  argument
726 	/* We are not protected by ring lock when reading the last sequence  in radeon_fence_count_emitted()
729 	radeon_fence_process(rdev, ring);  in radeon_fence_count_emitted()
730 	emitted = rdev->fence_drv[ring].sync_seq[ring]  in radeon_fence_count_emitted()
731 		- atomic64_read(&rdev->fence_drv[ring].last_seq);  in radeon_fence_count_emitted()
743  * @dst_ring: which ring to check against
745  * Check if the fence needs to be synced against another ring
747  * Returns true if we need to sync with another ring, false if
758 	if (fence->ring == dst_ring) {  in radeon_fence_need_sync()
762 	/* we are protected by the ring mutex */  in radeon_fence_need_sync()
764 	if (fence->seq <= fdrv->sync_seq[fence->ring]) {  in radeon_fence_need_sync()
775  * @dst_ring: which ring to check against
778  * be synced with the requested ring (all asics).
789 	if (fence->ring == dst_ring) {  in radeon_fence_note_sync()
793 	/* we are protected by the ring mutex */  in radeon_fence_note_sync()
794 	src = &fence->rdev->fence_drv[fence->ring];  in radeon_fence_note_sync()
806  * ready for use on the requested ring.
809  * @ring: ring index to start the fence driver on
816 int radeon_fence_driver_start_ring(struct radeon_device *rdev, int ring)  in radeon_fence_driver_start_ring()  argument
821 	radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg);  in radeon_fence_driver_start_ring()
822 	if (rdev->wb.use_event || !radeon_ring_supports_scratch_reg(rdev, &rdev->ring[ring])) {  in radeon_fence_driver_start_ring()
823 		rdev->fence_drv[ring].scratch_reg = 0;  in radeon_fence_driver_start_ring()
824 		if (ring != R600_RING_TYPE_UVD_INDEX) {  in radeon_fence_driver_start_ring()
825 			index = R600_WB_EVENT_OFFSET + ring * 4;  in radeon_fence_driver_start_ring()
826 			rdev->fence_drv[ring].cpu_addr = &rdev->wb.wb[index/4];  in radeon_fence_driver_start_ring()
827 			rdev->fence_drv[ring].gpu_addr = rdev->wb.gpu_addr +  in radeon_fence_driver_start_ring()
833 			rdev->fence_drv[ring].cpu_addr = rdev->uvd.cpu_addr + index;  in radeon_fence_driver_start_ring()
834 			rdev->fence_drv[ring].gpu_addr = rdev->uvd.gpu_addr + index;  in radeon_fence_driver_start_ring()
838 		r = radeon_scratch_get(rdev, &rdev->fence_drv[ring].scratch_reg);  in radeon_fence_driver_start_ring()
844 			rdev->fence_drv[ring].scratch_reg -  in radeon_fence_driver_start_ring()
846 		rdev->fence_drv[ring].cpu_addr = &rdev->wb.wb[index/4];  in radeon_fence_driver_start_ring()
847 		rdev->fence_drv[ring].gpu_addr = rdev->wb.gpu_addr + index;  in radeon_fence_driver_start_ring()
849 	radeon_fence_write(rdev, atomic64_read(&rdev->fence_drv[ring].last_seq), ring);  in radeon_fence_driver_start_ring()
850 	rdev->fence_drv[ring].initialized = true;  in radeon_fence_driver_start_ring()
851 	dev_info(rdev->dev, "fence driver on ring %d use gpu addr 0x%016llx\n",  in radeon_fence_driver_start_ring()
852 		 ring, rdev->fence_drv[ring].gpu_addr);  in radeon_fence_driver_start_ring()
858  * for the requested ring.
861  * @ring: ring index to start the fence driver on
863  * Init the fence driver for the requested ring (all asics).
866 static void radeon_fence_driver_init_ring(struct radeon_device *rdev, int ring)  in radeon_fence_driver_init_ring()  argument
870 	rdev->fence_drv[ring].scratch_reg = -1;  in radeon_fence_driver_init_ring()
871 	rdev->fence_drv[ring].cpu_addr = NULL;  in radeon_fence_driver_init_ring()
872 	rdev->fence_drv[ring].gpu_addr = 0;  in radeon_fence_driver_init_ring()
874 		rdev->fence_drv[ring].sync_seq[i] = 0;  in radeon_fence_driver_init_ring()
875 	atomic64_set(&rdev->fence_drv[ring].last_seq, 0);  in radeon_fence_driver_init_ring()
876 	rdev->fence_drv[ring].initialized = false;  in radeon_fence_driver_init_ring()
877 	INIT_DELAYED_WORK(&rdev->fence_drv[ring].lockup_work,  in radeon_fence_driver_init_ring()
879 	rdev->fence_drv[ring].rdev = rdev;  in radeon_fence_driver_init_ring()
895 	int ring;  in radeon_fence_driver_init()  local
898 	for (ring = 0; ring < RADEON_NUM_RINGS; ring++) {  in radeon_fence_driver_init()
899 		radeon_fence_driver_init_ring(rdev, ring);  in radeon_fence_driver_init()
915 	int ring, r;  in radeon_fence_driver_fini()  local
918 	for (ring = 0; ring < RADEON_NUM_RINGS; ring++) {  in radeon_fence_driver_fini()
919 		if (!rdev->fence_drv[ring].initialized)  in radeon_fence_driver_fini()
921 		r = radeon_fence_wait_empty(rdev, ring);  in radeon_fence_driver_fini()
924 			radeon_fence_driver_force_completion(rdev, ring);  in radeon_fence_driver_fini()
926 		cancel_delayed_work_sync(&rdev->fence_drv[ring].lockup_work);  in radeon_fence_driver_fini()
928 		radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg);  in radeon_fence_driver_fini()
929 		rdev->fence_drv[ring].initialized = false;  in radeon_fence_driver_fini()
938  * @ring: the ring to complete
943 void radeon_fence_driver_force_completion(struct radeon_device *rdev, int ring)  in radeon_fence_driver_force_completion()  argument
945 	if (rdev->fence_drv[ring].initialized) {  in radeon_fence_driver_force_completion()
946 		radeon_fence_write(rdev, rdev->fence_drv[ring].sync_seq[ring], ring);  in radeon_fence_driver_force_completion()
947 		cancel_delayed_work_sync(&rdev->fence_drv[ring].lockup_work);  in radeon_fence_driver_force_completion()
967 		seq_printf(m, "--- ring %d ---\n", i);  in radeon_debugfs_fence_info_show()
975 				seq_printf(m, "Last sync to ring %d 0x%016llx\n",  in radeon_debugfs_fence_info_show()
1026 	switch (fence->ring) {  in radeon_fence_get_timeline_name()