63  * @ring: ring the fence is associated with
68 static void amdgpu_fence_write(struct amdgpu_ring *ring, u32 seq)  in amdgpu_fence_write()  argument
70 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_write()
79  * @ring: ring the fence is associated with
84 static u32 amdgpu_fence_read(struct amdgpu_ring *ring)  in amdgpu_fence_read()  argument
86 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_read()
98  * amdgpu_fence_emit - emit a fence on the requested ring
100  * @ring: ring the fence is associated with
105  * Emits a fence command on the requested ring (all asics).
108 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f,  in amdgpu_fence_emit()  argument
111 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_emit()
128 	am_fence->ring = ring;  in amdgpu_fence_emit()
130 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit()
134 			       &ring->fence_drv.lock,  in amdgpu_fence_emit()
135 			       adev->fence_context + ring->idx, seq);  in amdgpu_fence_emit()
140 			       &ring->fence_drv.lock,  in amdgpu_fence_emit()
141 			       adev->fence_context + ring->idx, seq);  in amdgpu_fence_emit()
144 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit()
148 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_emit()
167 	 * emitting the fence would mess up the hardware ring buffer.  in amdgpu_fence_emit()
177  * amdgpu_fence_emit_polling - emit a fence on the requeste ring
179  * @ring: ring the fence is associated with
183  * Emits a fence command on the requested ring (all asics).
187 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,  in amdgpu_fence_emit_polling()  argument
196 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit_polling()
197 	r = amdgpu_fence_wait_polling(ring,  in amdgpu_fence_emit_polling()
198 				      seq - ring->fence_drv.num_fences_mask,  in amdgpu_fence_emit_polling()
203 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit_polling()
214  * @ring: pointer to struct amdgpu_ring
218 static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)  in amdgpu_fence_schedule_fallback()  argument
220 	mod_timer(&ring->fence_drv.fallback_timer,  in amdgpu_fence_schedule_fallback()
227  * @ring: pointer to struct amdgpu_ring
235 bool amdgpu_fence_process(struct amdgpu_ring *ring)  in amdgpu_fence_process()  argument
237 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_process()
238 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_process()
242 		last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_process()
243 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_process()
247 	if (timer_delete(&ring->fence_drv.fallback_timer) &&  in amdgpu_fence_process()
248 	    seq != ring->fence_drv.sync_seq)  in amdgpu_fence_process()
249 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_process()
273 		 * wptr was.  This is required for re-emitting the ring state for  in amdgpu_fence_process()
290  * @t: timer context used to obtain the pointer to ring structure
296 	struct amdgpu_ring *ring = timer_container_of(ring, t,  in amdgpu_fence_fallback()  local
299 	if (amdgpu_fence_process(ring))  in amdgpu_fence_fallback()
300 		dev_warn(ring->adev->dev,  in amdgpu_fence_fallback()
301 			 "Fence fallback timer expired on ring %s\n",  in amdgpu_fence_fallback()
302 			 ring->name);  in amdgpu_fence_fallback()
308  * @ring: ring index the fence is associated with
310  * Wait for all fences on the requested ring to signal (all asics).
313 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)  in amdgpu_fence_wait_empty()  argument
315 	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_wait_empty()
322 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_wait_empty()
339  * @ring: ring index the fence is associated with
343  * Wait for all fences on the requested ring to signal (all asics).
346 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,  in amdgpu_fence_wait_polling()  argument
351 	while ((int32_t)(wait_seq - amdgpu_fence_read(ring)) > 0 && timeout > 0) {  in amdgpu_fence_wait_polling()
360  * @ring: ring the fence is associated with
362  * Get the number of fences emitted on the requested ring (all asics).
363  * Returns the number of emitted fences on the ring.  Used by the
364  * dynpm code to ring track activity.
366 unsigned int amdgpu_fence_count_emitted(struct amdgpu_ring *ring)  in amdgpu_fence_count_emitted()  argument
370 	/* We are not protected by ring lock when reading the last sequence  in amdgpu_fence_count_emitted()
374 	emitted -= atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_count_emitted()
375 	emitted += READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_count_emitted()
381  * @ring: ring the fence is associated with
386 u64 amdgpu_fence_last_unsignaled_time_us(struct amdgpu_ring *ring)  in amdgpu_fence_last_unsignaled_time_us()  argument
388 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_last_unsignaled_time_us()
392 	last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_last_unsignaled_time_us()
393 	sync_seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_last_unsignaled_time_us()
409  * @ring: ring the fence is associated with
417 void amdgpu_fence_update_start_timestamp(struct amdgpu_ring *ring, uint32_t seq, ktime_t timestamp)  in amdgpu_fence_update_start_timestamp()  argument
419 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_update_start_timestamp()
432  * ready for use on the requested ring.
434  * @ring: ring to start the fence driver on
435  * @irq_src: interrupt source to use for this ring
436  * @irq_type: interrupt type to use for this ring
443 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,  in amdgpu_fence_driver_start_ring()  argument
447 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_start_ring()
450 	if (ring->funcs->type != AMDGPU_RING_TYPE_UVD) {  in amdgpu_fence_driver_start_ring()
451 		ring->fence_drv.cpu_addr = ring->fence_cpu_addr;  in amdgpu_fence_driver_start_ring()
452 		ring->fence_drv.gpu_addr = ring->fence_gpu_addr;  in amdgpu_fence_driver_start_ring()
456 		ring->fence_drv.cpu_addr = adev->uvd.inst[ring->me].cpu_addr + index;  in amdgpu_fence_driver_start_ring()
457 		ring->fence_drv.gpu_addr = adev->uvd.inst[ring->me].gpu_addr + index;  in amdgpu_fence_driver_start_ring()
459 	amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));  in amdgpu_fence_driver_start_ring()
461 	ring->fence_drv.irq_src = irq_src;  in amdgpu_fence_driver_start_ring()
462 	ring->fence_drv.irq_type = irq_type;  in amdgpu_fence_driver_start_ring()
463 	ring->fence_drv.initialized = true;  in amdgpu_fence_driver_start_ring()
465 	DRM_DEV_DEBUG(adev->dev, "fence driver on ring %s use gpu addr 0x%016llx\n",  in amdgpu_fence_driver_start_ring()
466 		      ring->name, ring->fence_drv.gpu_addr);  in amdgpu_fence_driver_start_ring()
472  * for the requested ring.
474  * @ring: ring to init the fence driver on
476  * Init the fence driver for the requested ring (all asics).
479 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)  in amdgpu_fence_driver_init_ring()  argument
481 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_init_ring()
486 	if (!is_power_of_2(ring->num_hw_submission))  in amdgpu_fence_driver_init_ring()
489 	ring->fence_drv.cpu_addr = NULL;  in amdgpu_fence_driver_init_ring()
490 	ring->fence_drv.gpu_addr = 0;  in amdgpu_fence_driver_init_ring()
491 	ring->fence_drv.sync_seq = 0;  in amdgpu_fence_driver_init_ring()
492 	atomic_set(&ring->fence_drv.last_seq, 0);  in amdgpu_fence_driver_init_ring()
493 	ring->fence_drv.initialized = false;  in amdgpu_fence_driver_init_ring()
495 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);  in amdgpu_fence_driver_init_ring()
497 	ring->fence_drv.num_fences_mask = ring->num_hw_submission * 2 - 1;  in amdgpu_fence_driver_init_ring()
498 	spin_lock_init(&ring->fence_drv.lock);  in amdgpu_fence_driver_init_ring()
499 	ring->fence_drv.fences = kcalloc(ring->num_hw_submission * 2, sizeof(void *),  in amdgpu_fence_driver_init_ring()
502 	if (!ring->fence_drv.fences)  in amdgpu_fence_driver_init_ring()
529  * @ring: ring that to be checked
536 static bool amdgpu_fence_need_ring_interrupt_restore(struct amdgpu_ring *ring)  in amdgpu_fence_need_ring_interrupt_restore()  argument
538 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_need_ring_interrupt_restore()
541 	switch (ring->funcs->type) {  in amdgpu_fence_need_ring_interrupt_restore()
574 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_fini()  local
576 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_fini()
581 			r = amdgpu_fence_wait_empty(ring);  in amdgpu_fence_driver_hw_fini()
586 			amdgpu_fence_driver_force_completion(ring);  in amdgpu_fence_driver_hw_fini()
589 		    ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_fini()
590 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_fini()
591 			amdgpu_irq_put(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_fini()
592 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_fini()
594 		timer_delete_sync(&ring->fence_drv.fallback_timer);  in amdgpu_fence_driver_hw_fini()
604 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_isr_toggle()  local
606 		if (!ring || !ring->fence_drv.initialized || !ring->fence_drv.irq_src)  in amdgpu_fence_driver_isr_toggle()
621 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_sw_fini()  local
623 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_sw_fini()
632 		if (ring->sched.ops)  in amdgpu_fence_driver_sw_fini()
633 			drm_sched_fini(&ring->sched);  in amdgpu_fence_driver_sw_fini()
635 		for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)  in amdgpu_fence_driver_sw_fini()
636 			dma_fence_put(ring->fence_drv.fences[j]);  in amdgpu_fence_driver_sw_fini()
637 		kfree(ring->fence_drv.fences);  in amdgpu_fence_driver_sw_fini()
638 		ring->fence_drv.fences = NULL;  in amdgpu_fence_driver_sw_fini()
639 		ring->fence_drv.initialized = false;  in amdgpu_fence_driver_sw_fini()
660 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_init()  local
662 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_init()
666 		if (ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_init()
667 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_init()
668 			amdgpu_irq_get(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_init()
669 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_init()
674  * amdgpu_fence_driver_clear_job_fences - clear job embedded fences of ring
676  * @ring: fence of the ring to be cleared
679 void amdgpu_fence_driver_clear_job_fences(struct amdgpu_ring *ring)  in amdgpu_fence_driver_clear_job_fences()  argument
684 	for (i = 0; i <= ring->fence_drv.num_fences_mask; i++) {  in amdgpu_fence_driver_clear_job_fences()
685 		ptr = &ring->fence_drv.fences[i];  in amdgpu_fence_driver_clear_job_fences()
705  * @ring: the ring which contains the fences
708  * Set an error code to all the fences pending on the ring.
710 void amdgpu_fence_driver_set_error(struct amdgpu_ring *ring, int error)  in amdgpu_fence_driver_set_error()  argument
712 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_driver_set_error()
728  * amdgpu_fence_driver_force_completion - force signal latest fence of ring
730  * @ring: fence of the ring to signal
733 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring)  in amdgpu_fence_driver_force_completion()  argument
735 	amdgpu_fence_driver_set_error(ring, -ECANCELED);  in amdgpu_fence_driver_force_completion()
736 	amdgpu_fence_write(ring, ring->fence_drv.sync_seq);  in amdgpu_fence_driver_force_completion()
737 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_force_completion()
747  * driver will save the ring contents which are not associated with the guilty
753  * which data needs to be saved out of the queue's ring buffer.
759  * @fence: fence of the ring to signal
765 	amdgpu_fence_write(fence->ring, fence->seq);  in amdgpu_fence_driver_guilty_force_completion()
766 	amdgpu_fence_process(fence->ring);  in amdgpu_fence_driver_guilty_force_completion()
773 	am_fence->wptr = am_fence->ring->wptr;  in amdgpu_fence_save_wptr()
776 static void amdgpu_ring_backup_unprocessed_command(struct amdgpu_ring *ring,  in amdgpu_ring_backup_unprocessed_command()  argument
779 	unsigned int first_idx = start_wptr & ring->buf_mask;  in amdgpu_ring_backup_unprocessed_command()
780 	unsigned int last_idx = end_wptr & ring->buf_mask;  in amdgpu_ring_backup_unprocessed_command()
783 	/* Backup the contents of the ring buffer. */  in amdgpu_ring_backup_unprocessed_command()
784 	for (i = first_idx; i != last_idx; ++i, i &= ring->buf_mask)  in amdgpu_ring_backup_unprocessed_command()
785 		ring->ring_backup[ring->ring_backup_entries_to_copy++] = ring->ring[i];  in amdgpu_ring_backup_unprocessed_command()
788 void amdgpu_ring_backup_unprocessed_commands(struct amdgpu_ring *ring,  in amdgpu_ring_backup_unprocessed_commands()  argument
796 	seqno = amdgpu_fence_read(ring);  in amdgpu_ring_backup_unprocessed_commands()
797 	wptr = ring->fence_drv.signalled_wptr;  in amdgpu_ring_backup_unprocessed_commands()
798 	ring->ring_backup_entries_to_copy = 0;  in amdgpu_ring_backup_unprocessed_commands()
800 	for (i = seqno + 1; i <= ring->fence_drv.sync_seq; ++i) {  in amdgpu_ring_backup_unprocessed_commands()
801 		ptr = &ring->fence_drv.fences[i & ring->fence_drv.num_fences_mask];  in amdgpu_ring_backup_unprocessed_commands()
808 			/* save everything if the ring is not guilty, otherwise  in amdgpu_ring_backup_unprocessed_commands()
812 				amdgpu_ring_backup_unprocessed_command(ring, wptr,  in amdgpu_ring_backup_unprocessed_commands()
831 	return (const char *)to_amdgpu_fence(f)->ring->name;  in amdgpu_fence_get_timeline_name()
851 	if (!timer_pending(&to_amdgpu_fence(f)->ring->fence_drv.fallback_timer))  in amdgpu_fence_enable_signaling()
852 		amdgpu_fence_schedule_fallback(to_amdgpu_fence(f)->ring);  in amdgpu_fence_enable_signaling()
954 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_debugfs_fence_info_show()  local
956 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_debugfs_fence_info_show()
959 		amdgpu_fence_process(ring);  in amdgpu_debugfs_fence_info_show()
961 		seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);  in amdgpu_debugfs_fence_info_show()
963 			   atomic_read(&ring->fence_drv.last_seq));  in amdgpu_debugfs_fence_info_show()
965 			   ring->fence_drv.sync_seq);  in amdgpu_debugfs_fence_info_show()
967 		if (ring->funcs->type == AMDGPU_RING_TYPE_GFX ||  in amdgpu_debugfs_fence_info_show()
968 		    ring->funcs->type == AMDGPU_RING_TYPE_SDMA) {  in amdgpu_debugfs_fence_info_show()
970 				   le32_to_cpu(*ring->trail_fence_cpu_addr));  in amdgpu_debugfs_fence_info_show()
972 				   ring->trail_seq);  in amdgpu_debugfs_fence_info_show()
975 		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)  in amdgpu_debugfs_fence_info_show()
980 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));  in amdgpu_debugfs_fence_info_show()
983 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));  in amdgpu_debugfs_fence_info_show()
986 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));  in amdgpu_debugfs_fence_info_show()