48  * are no longer in use by the associated ring on the GPU and
56 	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()
178 				       &ring->fence_drv.lock,  in amdgpu_fence_emit()
179 				       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()
187 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_emit()
206 	 * emitting the fence would mess up the hardware ring buffer.  in amdgpu_fence_emit()
216  * amdgpu_fence_emit_polling - emit a fence on the requeste ring
218  * @ring: ring the fence is associated with
222  * Emits a fence command on the requested ring (all asics).
226 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,  in amdgpu_fence_emit_polling()  argument
235 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit_polling()
236 	r = amdgpu_fence_wait_polling(ring,  in amdgpu_fence_emit_polling()
237 				      seq - ring->fence_drv.num_fences_mask,  in amdgpu_fence_emit_polling()
242 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit_polling()
253  * @ring: pointer to struct amdgpu_ring
257 static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)  in amdgpu_fence_schedule_fallback()  argument
259 	mod_timer(&ring->fence_drv.fallback_timer,  in amdgpu_fence_schedule_fallback()
266  * @ring: pointer to struct amdgpu_ring
274 bool amdgpu_fence_process(struct amdgpu_ring *ring)  in amdgpu_fence_process()  argument
276 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_process()
277 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_process()
281 		last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_process()
282 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_process()
286 	if (del_timer(&ring->fence_drv.fallback_timer) &&  in amdgpu_fence_process()
287 	    seq != ring->fence_drv.sync_seq)  in amdgpu_fence_process()
288 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_process()
323  * @t: timer context used to obtain the pointer to ring structure
329 	struct amdgpu_ring *ring = from_timer(ring, t,  in amdgpu_fence_fallback()  local
332 	if (amdgpu_fence_process(ring))  in amdgpu_fence_fallback()
333 		DRM_WARN("Fence fallback timer expired on ring %s\n", ring->name);  in amdgpu_fence_fallback()
339  * @ring: ring index the fence is associated with
341  * Wait for all fences on the requested ring to signal (all asics).
344 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)  in amdgpu_fence_wait_empty()  argument
346 	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_wait_empty()
353 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_wait_empty()
370  * @ring: ring index the fence is associated with
374  * Wait for all fences on the requested ring to signal (all asics).
377 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,  in amdgpu_fence_wait_polling()  argument
382 	while ((int32_t)(wait_seq - amdgpu_fence_read(ring)) > 0 && timeout > 0) {  in amdgpu_fence_wait_polling()
391  * @ring: ring the fence is associated with
393  * Get the number of fences emitted on the requested ring (all asics).
394  * Returns the number of emitted fences on the ring.  Used by the
395  * dynpm code to ring track activity.
397 unsigned int amdgpu_fence_count_emitted(struct amdgpu_ring *ring)  in amdgpu_fence_count_emitted()  argument
401 	/* We are not protected by ring lock when reading the last sequence  in amdgpu_fence_count_emitted()
405 	emitted -= atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_count_emitted()
406 	emitted += READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_count_emitted()
412  * @ring: ring the fence is associated with
417 u64 amdgpu_fence_last_unsignaled_time_us(struct amdgpu_ring *ring)  in amdgpu_fence_last_unsignaled_time_us()  argument
419 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_last_unsignaled_time_us()
423 	last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_last_unsignaled_time_us()
424 	sync_seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_last_unsignaled_time_us()
440  * @ring: ring the fence is associated with
448 void amdgpu_fence_update_start_timestamp(struct amdgpu_ring *ring, uint32_t seq, ktime_t timestamp)  in amdgpu_fence_update_start_timestamp()  argument
450 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_update_start_timestamp()
463  * ready for use on the requested ring.
465  * @ring: ring to start the fence driver on
466  * @irq_src: interrupt source to use for this ring
467  * @irq_type: interrupt type to use for this ring
474 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,  in amdgpu_fence_driver_start_ring()  argument
478 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_start_ring()
481 	if (ring->funcs->type != AMDGPU_RING_TYPE_UVD) {  in amdgpu_fence_driver_start_ring()
482 		ring->fence_drv.cpu_addr = ring->fence_cpu_addr;  in amdgpu_fence_driver_start_ring()
483 		ring->fence_drv.gpu_addr = ring->fence_gpu_addr;  in amdgpu_fence_driver_start_ring()
487 		ring->fence_drv.cpu_addr = adev->uvd.inst[ring->me].cpu_addr + index;  in amdgpu_fence_driver_start_ring()
488 		ring->fence_drv.gpu_addr = adev->uvd.inst[ring->me].gpu_addr + index;  in amdgpu_fence_driver_start_ring()
490 	amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));  in amdgpu_fence_driver_start_ring()
492 	ring->fence_drv.irq_src = irq_src;  in amdgpu_fence_driver_start_ring()
493 	ring->fence_drv.irq_type = irq_type;  in amdgpu_fence_driver_start_ring()
494 	ring->fence_drv.initialized = true;  in amdgpu_fence_driver_start_ring()
496 	DRM_DEV_DEBUG(adev->dev, "fence driver on ring %s use gpu addr 0x%016llx\n",  in amdgpu_fence_driver_start_ring()
497 		      ring->name, ring->fence_drv.gpu_addr);  in amdgpu_fence_driver_start_ring()
503  * for the requested ring.
505  * @ring: ring to init the fence driver on
507  * Init the fence driver for the requested ring (all asics).
510 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)  in amdgpu_fence_driver_init_ring()  argument
512 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_init_ring()
517 	if (!is_power_of_2(ring->num_hw_submission))  in amdgpu_fence_driver_init_ring()
520 	ring->fence_drv.cpu_addr = NULL;  in amdgpu_fence_driver_init_ring()
521 	ring->fence_drv.gpu_addr = 0;  in amdgpu_fence_driver_init_ring()
522 	ring->fence_drv.sync_seq = 0;  in amdgpu_fence_driver_init_ring()
523 	atomic_set(&ring->fence_drv.last_seq, 0);  in amdgpu_fence_driver_init_ring()
524 	ring->fence_drv.initialized = false;  in amdgpu_fence_driver_init_ring()
526 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);  in amdgpu_fence_driver_init_ring()
528 	ring->fence_drv.num_fences_mask = ring->num_hw_submission * 2 - 1;  in amdgpu_fence_driver_init_ring()
529 	spin_lock_init(&ring->fence_drv.lock);  in amdgpu_fence_driver_init_ring()
530 	ring->fence_drv.fences = kcalloc(ring->num_hw_submission * 2, sizeof(void *),  in amdgpu_fence_driver_init_ring()
533 	if (!ring->fence_drv.fences)  in amdgpu_fence_driver_init_ring()
560  * @ring: ring that to be checked
567 static bool amdgpu_fence_need_ring_interrupt_restore(struct amdgpu_ring *ring)  in amdgpu_fence_need_ring_interrupt_restore()  argument
569 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_need_ring_interrupt_restore()
572 	switch (ring->funcs->type) {  in amdgpu_fence_need_ring_interrupt_restore()
605 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_fini()  local
607 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_fini()
612 			r = amdgpu_fence_wait_empty(ring);  in amdgpu_fence_driver_hw_fini()
617 			amdgpu_fence_driver_force_completion(ring);  in amdgpu_fence_driver_hw_fini()
620 		    ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_fini()
621 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_fini()
622 			amdgpu_irq_put(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_fini()
623 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_fini()
625 		del_timer_sync(&ring->fence_drv.fallback_timer);  in amdgpu_fence_driver_hw_fini()
635 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_isr_toggle()  local
637 		if (!ring || !ring->fence_drv.initialized || !ring->fence_drv.irq_src)  in amdgpu_fence_driver_isr_toggle()
652 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_sw_fini()  local
654 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_sw_fini()
663 		if (ring->sched.ops)  in amdgpu_fence_driver_sw_fini()
664 			drm_sched_fini(&ring->sched);  in amdgpu_fence_driver_sw_fini()
666 		for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)  in amdgpu_fence_driver_sw_fini()
667 			dma_fence_put(ring->fence_drv.fences[j]);  in amdgpu_fence_driver_sw_fini()
668 		kfree(ring->fence_drv.fences);  in amdgpu_fence_driver_sw_fini()
669 		ring->fence_drv.fences = NULL;  in amdgpu_fence_driver_sw_fini()
670 		ring->fence_drv.initialized = false;  in amdgpu_fence_driver_sw_fini()
691 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_init()  local
693 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_init()
697 		if (ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_init()
698 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_init()
699 			amdgpu_irq_get(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_init()
700 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_init()
705  * amdgpu_fence_driver_clear_job_fences - clear job embedded fences of ring
707  * @ring: fence of the ring to be cleared
710 void amdgpu_fence_driver_clear_job_fences(struct amdgpu_ring *ring)  in amdgpu_fence_driver_clear_job_fences()  argument
715 	for (i = 0; i <= ring->fence_drv.num_fences_mask; i++) {  in amdgpu_fence_driver_clear_job_fences()
716 		ptr = &ring->fence_drv.fences[i];  in amdgpu_fence_driver_clear_job_fences()
736  * @ring: the ring which contains the fences
739  * Set an error code to all the fences pending on the ring.
741 void amdgpu_fence_driver_set_error(struct amdgpu_ring *ring, int error)  in amdgpu_fence_driver_set_error()  argument
743 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_driver_set_error()
759  * amdgpu_fence_driver_force_completion - force signal latest fence of ring
761  * @ring: fence of the ring to signal
764 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring)  in amdgpu_fence_driver_force_completion()  argument
766 	amdgpu_fence_driver_set_error(ring, -ECANCELED);  in amdgpu_fence_driver_force_completion()
767 	amdgpu_fence_write(ring, ring->fence_drv.sync_seq);  in amdgpu_fence_driver_force_completion()
768 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_force_completion()
782 	return (const char *)to_amdgpu_fence(f)->ring->name;  in amdgpu_fence_get_timeline_name()
802 	if (!timer_pending(&to_amdgpu_fence(f)->ring->fence_drv.fallback_timer))  in amdgpu_fence_enable_signaling()
803 		amdgpu_fence_schedule_fallback(to_amdgpu_fence(f)->ring);  in amdgpu_fence_enable_signaling()
905 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_debugfs_fence_info_show()  local
907 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_debugfs_fence_info_show()
910 		amdgpu_fence_process(ring);  in amdgpu_debugfs_fence_info_show()
912 		seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);  in amdgpu_debugfs_fence_info_show()
914 			   atomic_read(&ring->fence_drv.last_seq));  in amdgpu_debugfs_fence_info_show()
916 			   ring->fence_drv.sync_seq);  in amdgpu_debugfs_fence_info_show()
918 		if (ring->funcs->type == AMDGPU_RING_TYPE_GFX ||  in amdgpu_debugfs_fence_info_show()
919 		    ring->funcs->type == AMDGPU_RING_TYPE_SDMA) {  in amdgpu_debugfs_fence_info_show()
921 				   le32_to_cpu(*ring->trail_fence_cpu_addr));  in amdgpu_debugfs_fence_info_show()
923 				   ring->trail_seq);  in amdgpu_debugfs_fence_info_show()
926 		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)  in amdgpu_debugfs_fence_info_show()
931 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));  in amdgpu_debugfs_fence_info_show()
934 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));  in amdgpu_debugfs_fence_info_show()
937 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));  in amdgpu_debugfs_fence_info_show()