48  * are no longer in use by the associated ring on the GPU and
56 	struct amdgpu_ring		*ring;  member
93  * @ring: ring the fence is associated with
98 static void amdgpu_fence_write(struct amdgpu_ring *ring, u32 seq)  in amdgpu_fence_write()  argument
100 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_write()
109  * @ring: ring the fence is associated with
114 static u32 amdgpu_fence_read(struct amdgpu_ring *ring)  in amdgpu_fence_read()  argument
116 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_read()
128  * amdgpu_fence_emit - emit a fence on the requested ring
130  * @ring: ring the fence is associated with
135  * Emits a fence command on the requested ring (all asics).
138 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f, struct amdgpu_job *job,  in amdgpu_fence_emit()  argument
141 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_emit()
154 		am_fence->ring = ring;  in amdgpu_fence_emit()
160 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit()
166 				&ring->fence_drv.lock,  in amdgpu_fence_emit()
167 				adev->fence_context + ring->idx,  in amdgpu_fence_emit()
176 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit()
179 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_emit()
196 	 * emitting the fence would mess up the hardware ring buffer.  in amdgpu_fence_emit()
206  * amdgpu_fence_emit_polling - emit a fence on the requeste ring
208  * @ring: ring the fence is associated with
212  * Emits a fence command on the requested ring (all asics).
216 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,  in amdgpu_fence_emit_polling()  argument
225 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit_polling()
226 	r = amdgpu_fence_wait_polling(ring,  in amdgpu_fence_emit_polling()
227 				      seq - ring->fence_drv.num_fences_mask,  in amdgpu_fence_emit_polling()
232 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit_polling()
243  * @ring: pointer to struct amdgpu_ring
247 static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)  in amdgpu_fence_schedule_fallback()  argument
249 	mod_timer(&ring->fence_drv.fallback_timer,  in amdgpu_fence_schedule_fallback()
256  * @ring: pointer to struct amdgpu_ring
264 bool amdgpu_fence_process(struct amdgpu_ring *ring)  in amdgpu_fence_process()  argument
266 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_process()
267 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_process()
272 		last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_process()
273 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_process()
277 	if (del_timer(&ring->fence_drv.fallback_timer) &&  in amdgpu_fence_process()
278 	    seq != ring->fence_drv.sync_seq)  in amdgpu_fence_process()
279 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_process()
318  * @t: timer context used to obtain the pointer to ring structure
324 	struct amdgpu_ring *ring = from_timer(ring, t,  in amdgpu_fence_fallback()  local
327 	if (amdgpu_fence_process(ring))  in amdgpu_fence_fallback()
328 		DRM_WARN("Fence fallback timer expired on ring %s\n", ring->name);  in amdgpu_fence_fallback()
334  * @ring: ring index the fence is associated with
336  * Wait for all fences on the requested ring to signal (all asics).
339 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)  in amdgpu_fence_wait_empty()  argument
341 	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_wait_empty()
348 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_wait_empty()
365  * @ring: ring index the fence is associated with
369  * Wait for all fences on the requested ring to signal (all asics).
372 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,  in amdgpu_fence_wait_polling()  argument
379 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_wait_polling()
389  * @ring: ring the fence is associated with
391  * Get the number of fences emitted on the requested ring (all asics).
392  * Returns the number of emitted fences on the ring.  Used by the
393  * dynpm code to ring track activity.
395 unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring)  in amdgpu_fence_count_emitted()  argument
399 	/* We are not protected by ring lock when reading the last sequence  in amdgpu_fence_count_emitted()
402 	amdgpu_fence_process(ring);  in amdgpu_fence_count_emitted()
404 	emitted -= atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_count_emitted()
405 	emitted += READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_count_emitted()
411  * ready for use on the requested ring.
413  * @ring: ring to start the fence driver on
414  * @irq_src: interrupt source to use for this ring
415  * @irq_type: interrupt type to use for this ring
422 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,  in amdgpu_fence_driver_start_ring()  argument
426 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_start_ring()
429 	if (ring->funcs->type != AMDGPU_RING_TYPE_UVD) {  in amdgpu_fence_driver_start_ring()
430 		ring->fence_drv.cpu_addr = &adev->wb.wb[ring->fence_offs];  in amdgpu_fence_driver_start_ring()
431 		ring->fence_drv.gpu_addr = adev->wb.gpu_addr + (ring->fence_offs * 4);  in amdgpu_fence_driver_start_ring()
435 		ring->fence_drv.cpu_addr = adev->uvd.inst[ring->me].cpu_addr + index;  in amdgpu_fence_driver_start_ring()
436 		ring->fence_drv.gpu_addr = adev->uvd.inst[ring->me].gpu_addr + index;  in amdgpu_fence_driver_start_ring()
438 	amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));  in amdgpu_fence_driver_start_ring()
440 	ring->fence_drv.irq_src = irq_src;  in amdgpu_fence_driver_start_ring()
441 	ring->fence_drv.irq_type = irq_type;  in amdgpu_fence_driver_start_ring()
442 	ring->fence_drv.initialized = true;  in amdgpu_fence_driver_start_ring()
444 	DRM_DEV_DEBUG(adev->dev, "fence driver on ring %s use gpu addr 0x%016llx\n",  in amdgpu_fence_driver_start_ring()
445 		      ring->name, ring->fence_drv.gpu_addr);  in amdgpu_fence_driver_start_ring()
451  * for the requested ring.
453  * @ring: ring to init the fence driver on
457  * Init the fence driver for the requested ring (all asics).
460 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,  in amdgpu_fence_driver_init_ring()  argument
464 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_init_ring()
474 	ring->fence_drv.cpu_addr = NULL;  in amdgpu_fence_driver_init_ring()
475 	ring->fence_drv.gpu_addr = 0;  in amdgpu_fence_driver_init_ring()
476 	ring->fence_drv.sync_seq = 0;  in amdgpu_fence_driver_init_ring()
477 	atomic_set(&ring->fence_drv.last_seq, 0);  in amdgpu_fence_driver_init_ring()
478 	ring->fence_drv.initialized = false;  in amdgpu_fence_driver_init_ring()
480 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);  in amdgpu_fence_driver_init_ring()
482 	ring->fence_drv.num_fences_mask = num_hw_submission * 2 - 1;  in amdgpu_fence_driver_init_ring()
483 	spin_lock_init(&ring->fence_drv.lock);  in amdgpu_fence_driver_init_ring()
484 	ring->fence_drv.fences = kcalloc(num_hw_submission * 2, sizeof(void *),  in amdgpu_fence_driver_init_ring()
486 	if (!ring->fence_drv.fences)  in amdgpu_fence_driver_init_ring()
490 	if (ring->no_scheduler)  in amdgpu_fence_driver_init_ring()
493 	switch (ring->funcs->type) {  in amdgpu_fence_driver_init_ring()
508 	r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,  in amdgpu_fence_driver_init_ring()
510 			   timeout, NULL, sched_score, ring->name);  in amdgpu_fence_driver_init_ring()
512 		DRM_ERROR("Failed to create scheduler on ring %s.\n",  in amdgpu_fence_driver_init_ring()
513 			  ring->name);  in amdgpu_fence_driver_init_ring()
550 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_fini()  local
552 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_fini()
555 		if (!ring->no_scheduler)  in amdgpu_fence_driver_hw_fini()
556 			drm_sched_stop(&ring->sched, NULL);  in amdgpu_fence_driver_hw_fini()
560 			r = amdgpu_fence_wait_empty(ring);  in amdgpu_fence_driver_hw_fini()
565 			amdgpu_fence_driver_force_completion(ring);  in amdgpu_fence_driver_hw_fini()
567 		if (ring->fence_drv.irq_src)  in amdgpu_fence_driver_hw_fini()
568 			amdgpu_irq_put(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_fini()
569 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_fini()
571 		del_timer_sync(&ring->fence_drv.fallback_timer);  in amdgpu_fence_driver_hw_fini()
580 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_sw_fini()  local
582 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_sw_fini()
585 		if (!ring->no_scheduler)  in amdgpu_fence_driver_sw_fini()
586 			drm_sched_fini(&ring->sched);  in amdgpu_fence_driver_sw_fini()
588 		for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)  in amdgpu_fence_driver_sw_fini()
589 			dma_fence_put(ring->fence_drv.fences[j]);  in amdgpu_fence_driver_sw_fini()
590 		kfree(ring->fence_drv.fences);  in amdgpu_fence_driver_sw_fini()
591 		ring->fence_drv.fences = NULL;  in amdgpu_fence_driver_sw_fini()
592 		ring->fence_drv.initialized = false;  in amdgpu_fence_driver_sw_fini()
613 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_init()  local
614 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_init()
617 		if (!ring->no_scheduler) {  in amdgpu_fence_driver_hw_init()
618 			drm_sched_resubmit_jobs(&ring->sched);  in amdgpu_fence_driver_hw_init()
619 			drm_sched_start(&ring->sched, true);  in amdgpu_fence_driver_hw_init()
623 		if (ring->fence_drv.irq_src)  in amdgpu_fence_driver_hw_init()
624 			amdgpu_irq_get(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_init()
625 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_init()
630  * amdgpu_fence_driver_force_completion - force signal latest fence of ring
632  * @ring: fence of the ring to signal
635 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring)  in amdgpu_fence_driver_force_completion()  argument
637 	amdgpu_fence_write(ring, ring->fence_drv.sync_seq);  in amdgpu_fence_driver_force_completion()
638 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_force_completion()
652 	struct amdgpu_ring *ring;  in amdgpu_fence_get_timeline_name()  local
657 		ring = to_amdgpu_ring(job->base.sched);  in amdgpu_fence_get_timeline_name()
659 		ring = to_amdgpu_fence(f)->ring;  in amdgpu_fence_get_timeline_name()
661 	return (const char *)ring->name;  in amdgpu_fence_get_timeline_name()
674 	struct amdgpu_ring *ring;  in amdgpu_fence_enable_signaling()  local
679 		ring = to_amdgpu_ring(job->base.sched);  in amdgpu_fence_enable_signaling()
681 		ring = to_amdgpu_fence(f)->ring;  in amdgpu_fence_enable_signaling()
684 	if (!timer_pending(&ring->fence_drv.fallback_timer))  in amdgpu_fence_enable_signaling()
685 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_enable_signaling()
687 	DMA_FENCE_TRACE(f, "armed on ring %i!\n", ring->idx);  in amdgpu_fence_enable_signaling()
749 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_debugfs_fence_info_show()  local
750 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_debugfs_fence_info_show()
753 		amdgpu_fence_process(ring);  in amdgpu_debugfs_fence_info_show()
755 		seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);  in amdgpu_debugfs_fence_info_show()
757 			   atomic_read(&ring->fence_drv.last_seq));  in amdgpu_debugfs_fence_info_show()
759 			   ring->fence_drv.sync_seq);  in amdgpu_debugfs_fence_info_show()
761 		if (ring->funcs->type == AMDGPU_RING_TYPE_GFX ||  in amdgpu_debugfs_fence_info_show()
762 		    ring->funcs->type == AMDGPU_RING_TYPE_SDMA) {  in amdgpu_debugfs_fence_info_show()
764 				   le32_to_cpu(*ring->trail_fence_cpu_addr));  in amdgpu_debugfs_fence_info_show()
766 				   ring->trail_seq);  in amdgpu_debugfs_fence_info_show()
769 		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)  in amdgpu_debugfs_fence_info_show()
774 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));  in amdgpu_debugfs_fence_info_show()
777 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));  in amdgpu_debugfs_fence_info_show()
780 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));  in amdgpu_debugfs_fence_info_show()