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()
186 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_emit()
205 	 * emitting the fence would mess up the hardware ring buffer.  in amdgpu_fence_emit()
215  * amdgpu_fence_emit_polling - emit a fence on the requeste ring
217  * @ring: ring the fence is associated with
221  * Emits a fence command on the requested ring (all asics).
225 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,  in amdgpu_fence_emit_polling()  argument
234 	seq = ++ring->fence_drv.sync_seq;  in amdgpu_fence_emit_polling()
235 	r = amdgpu_fence_wait_polling(ring,  in amdgpu_fence_emit_polling()
236 				      seq - ring->fence_drv.num_fences_mask,  in amdgpu_fence_emit_polling()
241 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,  in amdgpu_fence_emit_polling()
252  * @ring: pointer to struct amdgpu_ring
256 static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)  in amdgpu_fence_schedule_fallback()  argument
258 	mod_timer(&ring->fence_drv.fallback_timer,  in amdgpu_fence_schedule_fallback()
265  * @ring: pointer to struct amdgpu_ring
273 bool amdgpu_fence_process(struct amdgpu_ring *ring)  in amdgpu_fence_process()  argument
275 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_process()
276 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_process()
280 		last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_process()
281 		seq = amdgpu_fence_read(ring);  in amdgpu_fence_process()
285 	if (del_timer(&ring->fence_drv.fallback_timer) &&  in amdgpu_fence_process()
286 	    seq != ring->fence_drv.sync_seq)  in amdgpu_fence_process()
287 		amdgpu_fence_schedule_fallback(ring);  in amdgpu_fence_process()
321  * @t: timer context used to obtain the pointer to ring structure
327 	struct amdgpu_ring *ring = from_timer(ring, t,  in amdgpu_fence_fallback()  local
330 	if (amdgpu_fence_process(ring))  in amdgpu_fence_fallback()
331 		DRM_WARN("Fence fallback timer expired on ring %s\n", ring->name);  in amdgpu_fence_fallback()
337  * @ring: ring index the fence is associated with
339  * Wait for all fences on the requested ring to signal (all asics).
342 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)  in amdgpu_fence_wait_empty()  argument
344 	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_wait_empty()
351 	ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];  in amdgpu_fence_wait_empty()
368  * @ring: ring index the fence is associated with
372  * Wait for all fences on the requested ring to signal (all asics).
375 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,  in amdgpu_fence_wait_polling()  argument
380 	while ((int32_t)(wait_seq - amdgpu_fence_read(ring)) > 0 && timeout > 0) {  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 int 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()
403 	emitted -= atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_count_emitted()
404 	emitted += READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_count_emitted()
410  * @ring: ring the fence is associated with
415 u64 amdgpu_fence_last_unsignaled_time_us(struct amdgpu_ring *ring)  in amdgpu_fence_last_unsignaled_time_us()  argument
417 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_last_unsignaled_time_us()
421 	last_seq = atomic_read(&ring->fence_drv.last_seq);  in amdgpu_fence_last_unsignaled_time_us()
422 	sync_seq = READ_ONCE(ring->fence_drv.sync_seq);  in amdgpu_fence_last_unsignaled_time_us()
438  * @ring: ring the fence is associated with
446 void amdgpu_fence_update_start_timestamp(struct amdgpu_ring *ring, uint32_t seq, ktime_t timestamp)  in amdgpu_fence_update_start_timestamp()  argument
448 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_update_start_timestamp()
461  * ready for use on the requested ring.
463  * @ring: ring to start the fence driver on
464  * @irq_src: interrupt source to use for this ring
465  * @irq_type: interrupt type to use for this ring
472 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,  in amdgpu_fence_driver_start_ring()  argument
476 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_start_ring()
479 	if (ring->funcs->type != AMDGPU_RING_TYPE_UVD) {  in amdgpu_fence_driver_start_ring()
480 		ring->fence_drv.cpu_addr = ring->fence_cpu_addr;  in amdgpu_fence_driver_start_ring()
481 		ring->fence_drv.gpu_addr = ring->fence_gpu_addr;  in amdgpu_fence_driver_start_ring()
485 		ring->fence_drv.cpu_addr = adev->uvd.inst[ring->me].cpu_addr + index;  in amdgpu_fence_driver_start_ring()
486 		ring->fence_drv.gpu_addr = adev->uvd.inst[ring->me].gpu_addr + index;  in amdgpu_fence_driver_start_ring()
488 	amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));  in amdgpu_fence_driver_start_ring()
490 	ring->fence_drv.irq_src = irq_src;  in amdgpu_fence_driver_start_ring()
491 	ring->fence_drv.irq_type = irq_type;  in amdgpu_fence_driver_start_ring()
492 	ring->fence_drv.initialized = true;  in amdgpu_fence_driver_start_ring()
494 	DRM_DEV_DEBUG(adev->dev, "fence driver on ring %s use gpu addr 0x%016llx\n",  in amdgpu_fence_driver_start_ring()
495 		      ring->name, ring->fence_drv.gpu_addr);  in amdgpu_fence_driver_start_ring()
501  * for the requested ring.
503  * @ring: ring to init the fence driver on
505  * Init the fence driver for the requested ring (all asics).
508 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)  in amdgpu_fence_driver_init_ring()  argument
510 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_driver_init_ring()
515 	if (!is_power_of_2(ring->num_hw_submission))  in amdgpu_fence_driver_init_ring()
518 	ring->fence_drv.cpu_addr = NULL;  in amdgpu_fence_driver_init_ring()
519 	ring->fence_drv.gpu_addr = 0;  in amdgpu_fence_driver_init_ring()
520 	ring->fence_drv.sync_seq = 0;  in amdgpu_fence_driver_init_ring()
521 	atomic_set(&ring->fence_drv.last_seq, 0);  in amdgpu_fence_driver_init_ring()
522 	ring->fence_drv.initialized = false;  in amdgpu_fence_driver_init_ring()
524 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);  in amdgpu_fence_driver_init_ring()
526 	ring->fence_drv.num_fences_mask = ring->num_hw_submission * 2 - 1;  in amdgpu_fence_driver_init_ring()
527 	spin_lock_init(&ring->fence_drv.lock);  in amdgpu_fence_driver_init_ring()
528 	ring->fence_drv.fences = kcalloc(ring->num_hw_submission * 2, sizeof(void *),  in amdgpu_fence_driver_init_ring()
531 	if (!ring->fence_drv.fences)  in amdgpu_fence_driver_init_ring()
558  * @ring: ring that to be checked
565 static bool amdgpu_fence_need_ring_interrupt_restore(struct amdgpu_ring *ring)  in amdgpu_fence_need_ring_interrupt_restore()  argument
567 	struct amdgpu_device *adev = ring->adev;  in amdgpu_fence_need_ring_interrupt_restore()
570 	switch (ring->funcs->type) {  in amdgpu_fence_need_ring_interrupt_restore()
602 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_fini()  local
604 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_fini()
609 			r = amdgpu_fence_wait_empty(ring);  in amdgpu_fence_driver_hw_fini()
614 			amdgpu_fence_driver_force_completion(ring);  in amdgpu_fence_driver_hw_fini()
617 		    ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_fini()
618 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_fini()
619 			amdgpu_irq_put(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_fini()
620 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_fini()
622 		del_timer_sync(&ring->fence_drv.fallback_timer);  in amdgpu_fence_driver_hw_fini()
632 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_isr_toggle()  local
634 		if (!ring || !ring->fence_drv.initialized || !ring->fence_drv.irq_src)  in amdgpu_fence_driver_isr_toggle()
649 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_sw_fini()  local
651 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_sw_fini()
660 		if (ring->sched.ops)  in amdgpu_fence_driver_sw_fini()
661 			drm_sched_fini(&ring->sched);  in amdgpu_fence_driver_sw_fini()
663 		for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)  in amdgpu_fence_driver_sw_fini()
664 			dma_fence_put(ring->fence_drv.fences[j]);  in amdgpu_fence_driver_sw_fini()
665 		kfree(ring->fence_drv.fences);  in amdgpu_fence_driver_sw_fini()
666 		ring->fence_drv.fences = NULL;  in amdgpu_fence_driver_sw_fini()
667 		ring->fence_drv.initialized = false;  in amdgpu_fence_driver_sw_fini()
688 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_fence_driver_hw_init()  local
690 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_fence_driver_hw_init()
694 		if (ring->fence_drv.irq_src &&  in amdgpu_fence_driver_hw_init()
695 		    amdgpu_fence_need_ring_interrupt_restore(ring))  in amdgpu_fence_driver_hw_init()
696 			amdgpu_irq_get(adev, ring->fence_drv.irq_src,  in amdgpu_fence_driver_hw_init()
697 				       ring->fence_drv.irq_type);  in amdgpu_fence_driver_hw_init()
702  * amdgpu_fence_driver_clear_job_fences - clear job embedded fences of ring
704  * @ring: fence of the ring to be cleared
707 void amdgpu_fence_driver_clear_job_fences(struct amdgpu_ring *ring)  in amdgpu_fence_driver_clear_job_fences()  argument
712 	for (i = 0; i <= ring->fence_drv.num_fences_mask; i++) {  in amdgpu_fence_driver_clear_job_fences()
713 		ptr = &ring->fence_drv.fences[i];  in amdgpu_fence_driver_clear_job_fences()
733  * @ring: the ring which contains the fences
736  * Set an error code to all the fences pending on the ring.
738 void amdgpu_fence_driver_set_error(struct amdgpu_ring *ring, int error)  in amdgpu_fence_driver_set_error()  argument
740 	struct amdgpu_fence_driver *drv = &ring->fence_drv;  in amdgpu_fence_driver_set_error()
756  * amdgpu_fence_driver_force_completion - force signal latest fence of ring
758  * @ring: fence of the ring to signal
761 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring)  in amdgpu_fence_driver_force_completion()  argument
763 	amdgpu_fence_driver_set_error(ring, -ECANCELED);  in amdgpu_fence_driver_force_completion()
764 	amdgpu_fence_write(ring, ring->fence_drv.sync_seq);  in amdgpu_fence_driver_force_completion()
765 	amdgpu_fence_process(ring);  in amdgpu_fence_driver_force_completion()
779 	return (const char *)to_amdgpu_fence(f)->ring->name;  in amdgpu_fence_get_timeline_name()
799 	if (!timer_pending(&to_amdgpu_fence(f)->ring->fence_drv.fallback_timer))  in amdgpu_fence_enable_signaling()
800 		amdgpu_fence_schedule_fallback(to_amdgpu_fence(f)->ring);  in amdgpu_fence_enable_signaling()
902 		struct amdgpu_ring *ring = adev->rings[i];  in amdgpu_debugfs_fence_info_show()  local
904 		if (!ring || !ring->fence_drv.initialized)  in amdgpu_debugfs_fence_info_show()
907 		amdgpu_fence_process(ring);  in amdgpu_debugfs_fence_info_show()
909 		seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);  in amdgpu_debugfs_fence_info_show()
911 			   atomic_read(&ring->fence_drv.last_seq));  in amdgpu_debugfs_fence_info_show()
913 			   ring->fence_drv.sync_seq);  in amdgpu_debugfs_fence_info_show()
915 		if (ring->funcs->type == AMDGPU_RING_TYPE_GFX ||  in amdgpu_debugfs_fence_info_show()
916 		    ring->funcs->type == AMDGPU_RING_TYPE_SDMA) {  in amdgpu_debugfs_fence_info_show()
918 				   le32_to_cpu(*ring->trail_fence_cpu_addr));  in amdgpu_debugfs_fence_info_show()
920 				   ring->trail_seq);  in amdgpu_debugfs_fence_info_show()
923 		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)  in amdgpu_debugfs_fence_info_show()
928 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));  in amdgpu_debugfs_fence_info_show()
931 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));  in amdgpu_debugfs_fence_info_show()
934 			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));  in amdgpu_debugfs_fence_info_show()