49  * are no longer in use by the associated ring on the GPU and
57 	struct amdgpu_ring		*ring;  member
96  * @ring: ring the fence is associated with
101 static void amdgpu_fence_write(struct amdgpu_ring *ring, u32 seq)  in amdgpu_fence_write()  argument
103 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_write()
112  * @ring: ring the fence is associated with
117 static u32 amdgpu_fence_read(struct amdgpu_ring *ring)  in amdgpu_fence_read()  argument
119 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_read()
131  * amdgpu_fence_emit - emit a fence on the requested ring
133  * @ring: ring the fence is associated with
138  * Emits a fence command on the requested ring (all asics).
141 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f, struct amdgpu_job *job,  in amdgpu_fence_emit()  argument
144 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_emit()
157 		am_fence->ring = ring;  in amdgpu_fence_emit()
163 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit()
172 				       &ring->fence_drv.lock,  in amdgpu_fence_emit()
173 				       adev->fence_context + ring->idx, seq);  in amdgpu_fence_emit()
179 				       &ring->fence_drv.lock,  in amdgpu_fence_emit()
180 				       adev->fence_context + ring->idx, seq);  in amdgpu_fence_emit()
183 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit()
186 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_emit()
203 	 * emitting the fence would mess up the hardware ring buffer.  in amdgpu_fence_emit()
213  * amdgpu_fence_emit_polling - emit a fence on the requeste ring
215  * @ring: ring the fence is associated with
219  * Emits a fence command on the requested ring (all asics).
223 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,  in amdgpu_fence_emit_polling()  argument
232 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit_polling()
233 	r = amdgpu_fence_wait_polling(ring,  in amdgpu_fence_emit_polling()
234 				      seq - ring->fence_drv.num_fences_mask,  in amdgpu_fence_emit_polling()
239 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit_polling()
250  * @ring: pointer to struct amdgpu_ring
254 static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)  in amdgpu_fence_schedule_fallback()  argument
256 	mod_timer(&ring->fence_drv.fallback_timer,  in amdgpu_fence_schedule_fallback()
263  * @ring: pointer to struct amdgpu_ring
271 bool amdgpu_fence_process(struct amdgpu_ring *ring)  in amdgpu_fence_process()  argument
273 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_process()
274 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_process()
278 		last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_process()
279 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_process()
283 	if (del_timer(&ring->fence_drv.fallback_timer) &&  in amdgpu_fence_process()
284 	    seq != ring->fence_drv.sync_seq)  in amdgpu_fence_process()
285 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_process()
319  * @t: timer context used to obtain the pointer to ring structure
325 	struct amdgpu_ring *ring = from_timer(ring, t,  in amdgpu_fence_fallback()  local
328 	if (amdgpu_fence_process(ring))  in amdgpu_fence_fallback()
329 		DRM_WARN("Fence fallback timer expired on ring %s\n", ring->name);  in amdgpu_fence_fallback()
335  * @ring: ring index the fence is associated with
337  * Wait for all fences on the requested ring to signal (all asics).
340 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)  in amdgpu_fence_wait_empty()  argument
342 	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_wait_empty()
349 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_wait_empty()
366  * @ring: ring index the fence is associated with
370  * Wait for all fences on the requested ring to signal (all asics).
373 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,  in amdgpu_fence_wait_polling()  argument
380 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_wait_polling()
390  * @ring: ring the fence is associated with
392  * Get the number of fences emitted on the requested ring (all asics).
393  * Returns the number of emitted fences on the ring.  Used by the
394  * dynpm code to ring track activity.
396 unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring)  in amdgpu_fence_count_emitted()  argument
400 	/* We are not protected by ring lock when reading the last sequence  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 = ring->fence_cpu_addr;  in amdgpu_fence_driver_start_ring()
431 		ring->fence_drv.gpu_addr = ring->fence_gpu_addr;  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
455  * Init the fence driver for the requested ring (all asics).
458 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)  in amdgpu_fence_driver_init_ring()  argument
460 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_init_ring()
465 	if (!is_power_of_2(ring->num_hw_submission))  in amdgpu_fence_driver_init_ring()
468 	ring->fence_drv.cpu_addr = NULL;  in amdgpu_fence_driver_init_ring()
469 	ring->fence_drv.gpu_addr = 0;  in amdgpu_fence_driver_init_ring()
470 	ring->fence_drv.sync_seq = 0;  in amdgpu_fence_driver_init_ring()
471 	atomic_set(&ring->fence_drv.last_seq, 0);  in amdgpu_fence_driver_init_ring()
472 	ring->fence_drv.initialized = false;  in amdgpu_fence_driver_init_ring()
474 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);  in amdgpu_fence_driver_init_ring()
476 	ring->fence_drv.num_fences_mask = ring->num_hw_submission * 2 - 1;  in amdgpu_fence_driver_init_ring()
477 	spin_lock_init(&ring->fence_drv.lock);  in amdgpu_fence_driver_init_ring()
478 	ring->fence_drv.fences = kcalloc(ring->num_hw_submission * 2, sizeof(void *),  in amdgpu_fence_driver_init_ring()
481 	if (!ring->fence_drv.fences)  in amdgpu_fence_driver_init_ring()
517 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_fini()  local
519 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_fini()
524 			r = amdgpu_fence_wait_empty(ring);  in amdgpu_fence_driver_hw_fini()
529 			amdgpu_fence_driver_force_completion(ring);  in amdgpu_fence_driver_hw_fini()
531 		if (ring->fence_drv.irq_src)  in amdgpu_fence_driver_hw_fini()
532 			amdgpu_irq_put(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_fini()
533 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_fini()
535 		del_timer_sync(&ring->fence_drv.fallback_timer);  in amdgpu_fence_driver_hw_fini()
545 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_isr_toggle()  local
547 		if (!ring || !ring->fence_drv.initialized || !ring->fence_drv.irq_src)  in amdgpu_fence_driver_isr_toggle()
562 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_sw_fini()  local
564 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_sw_fini()
567 		if (!ring->no_scheduler)  in amdgpu_fence_driver_sw_fini()
568 			drm_sched_fini(&ring->sched);  in amdgpu_fence_driver_sw_fini()
570 		for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)  in amdgpu_fence_driver_sw_fini()
571 			dma_fence_put(ring->fence_drv.fences[j]);  in amdgpu_fence_driver_sw_fini()
572 		kfree(ring->fence_drv.fences);  in amdgpu_fence_driver_sw_fini()
573 		ring->fence_drv.fences = NULL;  in amdgpu_fence_driver_sw_fini()
574 		ring->fence_drv.initialized = false;  in amdgpu_fence_driver_sw_fini()
595 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_init()  local
596 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_init()
600 		if (ring->fence_drv.irq_src)  in amdgpu_fence_driver_hw_init()
601 			amdgpu_irq_get(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_init()
602 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_init()
607  * amdgpu_fence_driver_clear_job_fences - clear job embedded fences of ring
609  * @ring: fence of the ring to be cleared
612 void amdgpu_fence_driver_clear_job_fences(struct amdgpu_ring *ring)  in amdgpu_fence_driver_clear_job_fences()  argument
617 	for (i = 0; i <= ring->fence_drv.num_fences_mask; i++) {  in amdgpu_fence_driver_clear_job_fences()
618 		ptr = &ring->fence_drv.fences[i];  in amdgpu_fence_driver_clear_job_fences()
628  * amdgpu_fence_driver_force_completion - force signal latest fence of ring
630  * @ring: fence of the ring to signal
633 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring)  in amdgpu_fence_driver_force_completion()  argument
635 	amdgpu_fence_write(ring, ring->fence_drv.sync_seq);  in amdgpu_fence_driver_force_completion()
636 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_force_completion()
650 	return (const char *)to_amdgpu_fence(f)->ring->name;  in amdgpu_fence_get_timeline_name()
670 	if (!timer_pending(&to_amdgpu_fence(f)->ring->fence_drv.fallback_timer))  in amdgpu_fence_enable_signaling()
671 		amdgpu_fence_schedule_fallback(to_amdgpu_fence(f)->ring);  in amdgpu_fence_enable_signaling()
773 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_debugfs_fence_info_show()  local
774 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_debugfs_fence_info_show()
777 		amdgpu_fence_process(ring);  in amdgpu_debugfs_fence_info_show()
779 		seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);  in amdgpu_debugfs_fence_info_show()
781 			   atomic_read(&ring->fence_drv.last_seq));  in amdgpu_debugfs_fence_info_show()
783 			   ring->fence_drv.sync_seq);  in amdgpu_debugfs_fence_info_show()
785 		if (ring->funcs->type == AMDGPU_RING_TYPE_GFX ||  in amdgpu_debugfs_fence_info_show()
786 		    ring->funcs->type == AMDGPU_RING_TYPE_SDMA) {  in amdgpu_debugfs_fence_info_show()
788 				   le32_to_cpu(*ring->trail_fence_cpu_addr));  in amdgpu_debugfs_fence_info_show()
790 				   ring->trail_seq);  in amdgpu_debugfs_fence_info_show()
793 		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)  in amdgpu_debugfs_fence_info_show()
798 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));  in amdgpu_debugfs_fence_info_show()
801 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));  in amdgpu_debugfs_fence_info_show()
804 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));  in amdgpu_debugfs_fence_info_show()