58  * @ring: ring the fence is associated with
63 static void amdgpu_fence_write(struct amdgpu_ring *ring, u32 seq)  in amdgpu_fence_write()  argument
65 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_write()
74  * @ring: ring the fence is associated with
79 static u32 amdgpu_fence_read(struct amdgpu_ring *ring)  in amdgpu_fence_read()  argument
81 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_read()
93  * amdgpu_fence_emit - emit a fence on the requested ring
95  * @ring: ring the fence is associated with
99  * Emits a fence command on the requested ring (all asics).
102 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct amdgpu_fence *af,  in amdgpu_fence_emit()  argument
105 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_emit()
112 	af->ring = ring;  in amdgpu_fence_emit()
114 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit()
116 		       &ring->fence_drv.lock,  in amdgpu_fence_emit()
117 		       adev->fence_context + ring->idx, seq);  in amdgpu_fence_emit()
119 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit()
123 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_emit()
142 	 * emitting the fence would mess up the hardware ring buffer.  in amdgpu_fence_emit()
150  * amdgpu_fence_emit_polling - emit a fence on the requeste ring
152  * @ring: ring the fence is associated with
156  * Emits a fence command on the requested ring (all asics).
160 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,  in amdgpu_fence_emit_polling()  argument
169 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit_polling()
170 	r = amdgpu_fence_wait_polling(ring,  in amdgpu_fence_emit_polling()
171 				      seq - ring->fence_drv.num_fences_mask,  in amdgpu_fence_emit_polling()
176 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit_polling()
187  * @ring: pointer to struct amdgpu_ring
191 static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)  in amdgpu_fence_schedule_fallback()  argument
193 	mod_timer(&ring->fence_drv.fallback_timer,  in amdgpu_fence_schedule_fallback()
200  * @ring: pointer to struct amdgpu_ring
208 bool amdgpu_fence_process(struct amdgpu_ring *ring)  in amdgpu_fence_process()  argument
210 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_process()
211 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_process()
215 		last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_process()
216 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_process()
220 	if (timer_delete(&ring->fence_drv.fallback_timer) &&  in amdgpu_fence_process()
221 	    seq != ring->fence_drv.sync_seq)  in amdgpu_fence_process()
222 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_process()
246 		 * wptr was.  This is required for re-emitting the ring state for  in amdgpu_fence_process()
262  * @t: timer context used to obtain the pointer to ring structure
268 	struct amdgpu_ring *ring = timer_container_of(ring, t,  in amdgpu_fence_fallback()  local
271 	if (amdgpu_fence_process(ring))  in amdgpu_fence_fallback()
272 		dev_warn(ring->adev->dev,  in amdgpu_fence_fallback()
273 			 "Fence fallback timer expired on ring %s\n",  in amdgpu_fence_fallback()
274 			 ring->name);  in amdgpu_fence_fallback()
280  * @ring: ring index the fence is associated with
282  * Wait for all fences on the requested ring to signal (all asics).
285 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)  in amdgpu_fence_wait_empty()  argument
287 	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_wait_empty()
294 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_wait_empty()
311  * @ring: ring index the fence is associated with
315  * Wait for all fences on the requested ring to signal (all asics).
318 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,  in amdgpu_fence_wait_polling()  argument
323 	while ((int32_t)(wait_seq - amdgpu_fence_read(ring)) > 0 && timeout > 0) {  in amdgpu_fence_wait_polling()
332  * @ring: ring the fence is associated with
334  * Get the number of fences emitted on the requested ring (all asics).
335  * Returns the number of emitted fences on the ring.  Used by the
336  * dynpm code to ring track activity.
338 unsigned int amdgpu_fence_count_emitted(struct amdgpu_ring *ring)  in amdgpu_fence_count_emitted()  argument
342 	/* We are not protected by ring lock when reading the last sequence  in amdgpu_fence_count_emitted()
346 	emitted -= atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_count_emitted()
347 	emitted += READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_count_emitted()
353  * @ring: ring the fence is associated with
358 u64 amdgpu_fence_last_unsignaled_time_us(struct amdgpu_ring *ring)  in amdgpu_fence_last_unsignaled_time_us()  argument
360 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_last_unsignaled_time_us()
364 	last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_last_unsignaled_time_us()
365 	sync_seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_last_unsignaled_time_us()
381  * @ring: ring the fence is associated with
389 void amdgpu_fence_update_start_timestamp(struct amdgpu_ring *ring, uint32_t seq, ktime_t timestamp)  in amdgpu_fence_update_start_timestamp()  argument
391 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_update_start_timestamp()
404  * ready for use on the requested ring.
406  * @ring: ring to start the fence driver on
407  * @irq_src: interrupt source to use for this ring
408  * @irq_type: interrupt type to use for this ring
415 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,  in amdgpu_fence_driver_start_ring()  argument
419 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_start_ring()
422 	if (ring->funcs->type != AMDGPU_RING_TYPE_UVD) {  in amdgpu_fence_driver_start_ring()
423 		ring->fence_drv.cpu_addr = ring->fence_cpu_addr;  in amdgpu_fence_driver_start_ring()
424 		ring->fence_drv.gpu_addr = ring->fence_gpu_addr;  in amdgpu_fence_driver_start_ring()
428 		ring->fence_drv.cpu_addr = adev->uvd.inst[ring->me].cpu_addr + index;  in amdgpu_fence_driver_start_ring()
429 		ring->fence_drv.gpu_addr = adev->uvd.inst[ring->me].gpu_addr + index;  in amdgpu_fence_driver_start_ring()
431 	amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));  in amdgpu_fence_driver_start_ring()
433 	ring->fence_drv.irq_src = irq_src;  in amdgpu_fence_driver_start_ring()
434 	ring->fence_drv.irq_type = irq_type;  in amdgpu_fence_driver_start_ring()
435 	ring->fence_drv.initialized = true;  in amdgpu_fence_driver_start_ring()
437 	DRM_DEV_DEBUG(adev->dev, "fence driver on ring %s use gpu addr 0x%016llx\n",  in amdgpu_fence_driver_start_ring()
438 		      ring->name, ring->fence_drv.gpu_addr);  in amdgpu_fence_driver_start_ring()
444  * for the requested ring.
446  * @ring: ring to init the fence driver on
448  * Init the fence driver for the requested ring (all asics).
451 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)  in amdgpu_fence_driver_init_ring()  argument
453 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_init_ring()
458 	if (!is_power_of_2(ring->num_hw_submission))  in amdgpu_fence_driver_init_ring()
461 	ring->fence_drv.cpu_addr = NULL;  in amdgpu_fence_driver_init_ring()
462 	ring->fence_drv.gpu_addr = 0;  in amdgpu_fence_driver_init_ring()
463 	ring->fence_drv.sync_seq = 0;  in amdgpu_fence_driver_init_ring()
464 	atomic_set(&ring->fence_drv.last_seq, 0);  in amdgpu_fence_driver_init_ring()
465 	ring->fence_drv.initialized = false;  in amdgpu_fence_driver_init_ring()
467 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);  in amdgpu_fence_driver_init_ring()
469 	ring->fence_drv.num_fences_mask = ring->num_hw_submission * 2 - 1;  in amdgpu_fence_driver_init_ring()
470 	spin_lock_init(&ring->fence_drv.lock);  in amdgpu_fence_driver_init_ring()
471 	ring->fence_drv.fences = kcalloc(ring->num_hw_submission * 2, sizeof(void *),  in amdgpu_fence_driver_init_ring()
474 	if (!ring->fence_drv.fences)  in amdgpu_fence_driver_init_ring()
501  * @ring: ring that to be checked
508 static bool amdgpu_fence_need_ring_interrupt_restore(struct amdgpu_ring *ring)  in amdgpu_fence_need_ring_interrupt_restore()  argument
510 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_need_ring_interrupt_restore()
513 	switch (ring->funcs->type) {  in amdgpu_fence_need_ring_interrupt_restore()
546 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_fini()  local
548 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_fini()
553 			r = amdgpu_fence_wait_empty(ring);  in amdgpu_fence_driver_hw_fini()
558 			amdgpu_fence_driver_force_completion(ring);  in amdgpu_fence_driver_hw_fini()
561 		    ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_fini()
562 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_fini()
563 			amdgpu_irq_put(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_fini()
564 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_fini()
566 		timer_delete_sync(&ring->fence_drv.fallback_timer);  in amdgpu_fence_driver_hw_fini()
576 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_isr_toggle()  local
578 		if (!ring || !ring->fence_drv.initialized || !ring->fence_drv.irq_src)  in amdgpu_fence_driver_isr_toggle()
593 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_sw_fini()  local
595 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_sw_fini()
604 		if (ring->sched.ops)  in amdgpu_fence_driver_sw_fini()
605 			drm_sched_fini(&ring->sched);  in amdgpu_fence_driver_sw_fini()
607 		for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)  in amdgpu_fence_driver_sw_fini()
608 			dma_fence_put(ring->fence_drv.fences[j]);  in amdgpu_fence_driver_sw_fini()
609 		kfree(ring->fence_drv.fences);  in amdgpu_fence_driver_sw_fini()
610 		ring->fence_drv.fences = NULL;  in amdgpu_fence_driver_sw_fini()
611 		ring->fence_drv.initialized = false;  in amdgpu_fence_driver_sw_fini()
632 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_init()  local
634 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_init()
638 		if (ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_init()
639 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_init()
640 			amdgpu_irq_get(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_init()
641 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_init()
647  * @ring: the ring which contains the fences
650  * Set an error code to all the fences pending on the ring.
652 void amdgpu_fence_driver_set_error(struct amdgpu_ring *ring, int error)  in amdgpu_fence_driver_set_error()  argument
654 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_driver_set_error()
670  * amdgpu_fence_driver_force_completion - force signal latest fence of ring
672  * @ring: fence of the ring to signal
675 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring)  in amdgpu_fence_driver_force_completion()  argument
677 	amdgpu_fence_driver_set_error(ring, -ECANCELED);  in amdgpu_fence_driver_force_completion()
678 	amdgpu_fence_write(ring, ring->fence_drv.sync_seq);  in amdgpu_fence_driver_force_completion()
679 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_force_completion()
689  * driver will save the ring contents which are not associated with the guilty
695  * which data needs to be saved out of the queue's ring buffer.
701  * @af: fence of the ring to signal
709 	struct amdgpu_ring *ring = af->ring;  in amdgpu_fence_driver_guilty_force_completion()  local
713 	last_seq = amdgpu_fence_read(ring) & ring->fence_drv.num_fences_mask;  in amdgpu_fence_driver_guilty_force_completion()
714 	seq = ring->fence_drv.sync_seq & ring->fence_drv.num_fences_mask;  in amdgpu_fence_driver_guilty_force_completion()
717 	spin_lock_irqsave(&ring->fence_drv.lock, flags);  in amdgpu_fence_driver_guilty_force_completion()
720 		last_seq &= ring->fence_drv.num_fences_mask;  in amdgpu_fence_driver_guilty_force_completion()
722 		ptr = &ring->fence_drv.fences[last_seq];  in amdgpu_fence_driver_guilty_force_completion()
736 	spin_unlock_irqrestore(&ring->fence_drv.lock, flags);  in amdgpu_fence_driver_guilty_force_completion()
738 	amdgpu_fence_write(ring, (u32)af->base.seqno);  in amdgpu_fence_driver_guilty_force_completion()
739 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_guilty_force_completion()
744 	af->wptr = af->ring->wptr;  in amdgpu_fence_save_wptr()
747 static void amdgpu_ring_backup_unprocessed_command(struct amdgpu_ring *ring,  in amdgpu_ring_backup_unprocessed_command()  argument
750 	unsigned int first_idx = start_wptr & ring->buf_mask;  in amdgpu_ring_backup_unprocessed_command()
751 	unsigned int last_idx = end_wptr & ring->buf_mask;  in amdgpu_ring_backup_unprocessed_command()
754 	/* Backup the contents of the ring buffer. */  in amdgpu_ring_backup_unprocessed_command()
755 	for (i = first_idx; i != last_idx; ++i, i &= ring->buf_mask)  in amdgpu_ring_backup_unprocessed_command()
756 		ring->ring_backup[ring->ring_backup_entries_to_copy++] = ring->ring[i];  in amdgpu_ring_backup_unprocessed_command()
759 void amdgpu_ring_backup_unprocessed_commands(struct amdgpu_ring *ring,  in amdgpu_ring_backup_unprocessed_commands()  argument
768 	last_seq = amdgpu_fence_read(ring) & ring->fence_drv.num_fences_mask;  in amdgpu_ring_backup_unprocessed_commands()
769 	seq = ring->fence_drv.sync_seq & ring->fence_drv.num_fences_mask;  in amdgpu_ring_backup_unprocessed_commands()
770 	wptr = ring->fence_drv.signalled_wptr;  in amdgpu_ring_backup_unprocessed_commands()
771 	ring->ring_backup_entries_to_copy = 0;  in amdgpu_ring_backup_unprocessed_commands()
775 		last_seq &= ring->fence_drv.num_fences_mask;  in amdgpu_ring_backup_unprocessed_commands()
777 		ptr = &ring->fence_drv.fences[last_seq];  in amdgpu_ring_backup_unprocessed_commands()
784 			/* save everything if the ring is not guilty, otherwise  in amdgpu_ring_backup_unprocessed_commands()
788 				amdgpu_ring_backup_unprocessed_command(ring, wptr,  in amdgpu_ring_backup_unprocessed_commands()
807 	return (const char *)to_amdgpu_fence(f)->ring->name;  in amdgpu_fence_get_timeline_name()
820 	if (!timer_pending(&to_amdgpu_fence(f)->ring->fence_drv.fallback_timer))  in amdgpu_fence_enable_signaling()
821 		amdgpu_fence_schedule_fallback(to_amdgpu_fence(f)->ring);  in amdgpu_fence_enable_signaling()
871 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_debugfs_fence_info_show()  local
873 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_debugfs_fence_info_show()
876 		amdgpu_fence_process(ring);  in amdgpu_debugfs_fence_info_show()
878 		seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);  in amdgpu_debugfs_fence_info_show()
880 			   atomic_read(&ring->fence_drv.last_seq));  in amdgpu_debugfs_fence_info_show()
882 			   ring->fence_drv.sync_seq);  in amdgpu_debugfs_fence_info_show()
884 		if (ring->funcs->type == AMDGPU_RING_TYPE_GFX ||  in amdgpu_debugfs_fence_info_show()
885 		    ring->funcs->type == AMDGPU_RING_TYPE_SDMA) {  in amdgpu_debugfs_fence_info_show()
887 				   le32_to_cpu(*ring->trail_fence_cpu_addr));  in amdgpu_debugfs_fence_info_show()
889 				   ring->trail_seq);  in amdgpu_debugfs_fence_info_show()
892 		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)  in amdgpu_debugfs_fence_info_show()
897 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));  in amdgpu_debugfs_fence_info_show()
900 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));  in amdgpu_debugfs_fence_info_show()
903 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));  in amdgpu_debugfs_fence_info_show()