79 	struct device_state *dev_state;  member
95 static void free_pasid_states(struct device_state *dev_state);
109 	struct device_state *dev_state;  in __get_device_state()  local
111 	list_for_each_entry(dev_state, &state_list, list) {  in __get_device_state()
112 		if (dev_state->devid == devid)  in __get_device_state()
113 			return dev_state;  in __get_device_state()
121 	struct device_state *dev_state;  in get_device_state()  local
125 	dev_state = __get_device_state(devid);  in get_device_state()
126 	if (dev_state != NULL)  in get_device_state()
127 		atomic_inc(&dev_state->count);  in get_device_state()
130 	return dev_state;  in get_device_state()
133 static void free_device_state(struct device_state *dev_state)  in free_device_state()  argument
139 	iommu_detach_device(dev_state->domain, &dev_state->pdev->dev);  in free_device_state()
142 	iommu_domain_free(dev_state->domain);  in free_device_state()
145 	kfree(dev_state);  in free_device_state()
148 static void put_device_state(struct device_state *dev_state)  in put_device_state()  argument
150 	if (atomic_dec_and_test(&dev_state->count))  in put_device_state()
151 		wake_up(&dev_state->wq);  in put_device_state()
155 static struct pasid_state **__get_pasid_state_ptr(struct device_state *dev_state,  in __get_pasid_state_ptr()  argument
161 	level = dev_state->pasid_levels;  in __get_pasid_state_ptr()
162 	root  = dev_state->states;  in __get_pasid_state_ptr()
188 static int set_pasid_state(struct device_state *dev_state,  in set_pasid_state()  argument
196 	spin_lock_irqsave(&dev_state->lock, flags);  in set_pasid_state()
197 	ptr = __get_pasid_state_ptr(dev_state, pasid, true);  in set_pasid_state()
212 	spin_unlock_irqrestore(&dev_state->lock, flags);  in set_pasid_state()
217 static void clear_pasid_state(struct device_state *dev_state, int pasid)  in clear_pasid_state()  argument
222 	spin_lock_irqsave(&dev_state->lock, flags);  in clear_pasid_state()
223 	ptr = __get_pasid_state_ptr(dev_state, pasid, true);  in clear_pasid_state()
231 	spin_unlock_irqrestore(&dev_state->lock, flags);  in clear_pasid_state()
234 static struct pasid_state *get_pasid_state(struct device_state *dev_state,  in get_pasid_state()  argument
240 	spin_lock_irqsave(&dev_state->lock, flags);  in get_pasid_state()
241 	ptr = __get_pasid_state_ptr(dev_state, pasid, false);  in get_pasid_state()
251 	spin_unlock_irqrestore(&dev_state->lock, flags);  in get_pasid_state()
322 static void free_pasid_states(struct device_state *dev_state)  in free_pasid_states()  argument
327 	for (i = 0; i < dev_state->max_pasids; ++i) {  in free_pasid_states()
328 		pasid_state = get_pasid_state(dev_state, i);  in free_pasid_states()
344 		put_device_state(dev_state);  in free_pasid_states()
347 	if (dev_state->pasid_levels == 2)  in free_pasid_states()
348 		free_pasid_states_level2(dev_state->states);  in free_pasid_states()
349 	else if (dev_state->pasid_levels == 1)  in free_pasid_states()
350 		free_pasid_states_level1(dev_state->states);  in free_pasid_states()
351 	else if (dev_state->pasid_levels != 0)  in free_pasid_states()
354 	free_page((unsigned long)dev_state->states);  in free_pasid_states()
366 	struct device_state *dev_state;  in __mn_flush_page()  local
369 	dev_state   = pasid_state->device_state;  in __mn_flush_page()
371 	amd_iommu_flush_page(dev_state->domain, pasid_state->pasid, address);  in __mn_flush_page()
397 	struct device_state *dev_state;  in mn_invalidate_range()  local
400 	dev_state   = pasid_state->device_state;  in mn_invalidate_range()
403 		amd_iommu_flush_page(dev_state->domain, pasid_state->pasid,  in mn_invalidate_range()
406 		amd_iommu_flush_tlb(dev_state->domain, pasid_state->pasid);  in mn_invalidate_range()
412 	struct device_state *dev_state;  in mn_release()  local
418 	dev_state      = pasid_state->device_state;  in mn_release()
421 	if (run_inv_ctx_cb && dev_state->inv_ctx_cb)  in mn_release()
422 		dev_state->inv_ctx_cb(dev_state->pdev, pasid_state->pasid);  in mn_release()
444 static void finish_pri_tag(struct device_state *dev_state,  in finish_pri_tag()  argument
453 		amd_iommu_complete_ppr(dev_state->pdev, pasid_state->pasid,  in finish_pri_tag()
465 	if (!fault->dev_state->inv_ppr_cb) {  in handle_fault_error()
470 	status = fault->dev_state->inv_ppr_cb(fault->dev_state->pdev,  in handle_fault_error()
529 	finish_pri_tag(fault->dev_state, fault->state, fault->tag);  in do_fault()
540 	struct device_state *dev_state;  in ppr_notifier()  local
552 	dev_state = get_device_state(iommu_fault->device_id);  in ppr_notifier()
553 	if (dev_state == NULL)  in ppr_notifier()
556 	pasid_state = get_pasid_state(dev_state, iommu_fault->pasid);  in ppr_notifier()
559 		amd_iommu_complete_ppr(dev_state->pdev, iommu_fault->pasid,  in ppr_notifier()
573 		finish_pri_tag(dev_state, pasid_state, tag);  in ppr_notifier()
577 	fault->dev_state = dev_state;  in ppr_notifier()
595 	put_device_state(dev_state);  in ppr_notifier()
609 	struct device_state *dev_state;  in amd_iommu_bind_pasid()  local
620 	dev_state = get_device_state(devid);  in amd_iommu_bind_pasid()
622 	if (dev_state == NULL)  in amd_iommu_bind_pasid()
626 	if (pasid < 0 || pasid >= dev_state->max_pasids)  in amd_iommu_bind_pasid()
641 	pasid_state->device_state = dev_state;  in amd_iommu_bind_pasid()
652 	ret = set_pasid_state(dev_state, pasid_state, pasid);  in amd_iommu_bind_pasid()
656 	ret = amd_iommu_domain_set_gcr3(dev_state->domain, pasid,  in amd_iommu_bind_pasid()
674 	clear_pasid_state(dev_state, pasid);  in amd_iommu_bind_pasid()
684 	put_device_state(dev_state);  in amd_iommu_bind_pasid()
693 	struct device_state *dev_state;  in amd_iommu_unbind_pasid()  local
702 	dev_state = get_device_state(devid);  in amd_iommu_unbind_pasid()
703 	if (dev_state == NULL)  in amd_iommu_unbind_pasid()
706 	if (pasid < 0 || pasid >= dev_state->max_pasids)  in amd_iommu_unbind_pasid()
709 	pasid_state = get_pasid_state(dev_state, pasid);  in amd_iommu_unbind_pasid()
719 	clear_pasid_state(dev_state, pasid_state->pasid);  in amd_iommu_unbind_pasid()
731 	put_device_state(dev_state);  in amd_iommu_unbind_pasid()
734 	put_device_state(dev_state);  in amd_iommu_unbind_pasid()
740 	struct device_state *dev_state;  in amd_iommu_init_device()  local
755 	dev_state = kzalloc(sizeof(*dev_state), GFP_KERNEL);  in amd_iommu_init_device()
756 	if (dev_state == NULL)  in amd_iommu_init_device()
759 	spin_lock_init(&dev_state->lock);  in amd_iommu_init_device()
760 	init_waitqueue_head(&dev_state->wq);  in amd_iommu_init_device()
761 	dev_state->pdev  = pdev;  in amd_iommu_init_device()
762 	dev_state->devid = devid;  in amd_iommu_init_device()
765 	for (dev_state->pasid_levels = 0; (tmp - 1) & ~0x1ff; tmp >>= 9)  in amd_iommu_init_device()
766 		dev_state->pasid_levels += 1;  in amd_iommu_init_device()
768 	atomic_set(&dev_state->count, 1);  in amd_iommu_init_device()
769 	dev_state->max_pasids = pasids;  in amd_iommu_init_device()
772 	dev_state->states = (void *)get_zeroed_page(GFP_KERNEL);  in amd_iommu_init_device()
773 	if (dev_state->states == NULL)  in amd_iommu_init_device()
776 	dev_state->domain = iommu_domain_alloc(&pci_bus_type);  in amd_iommu_init_device()
777 	if (dev_state->domain == NULL)  in amd_iommu_init_device()
780 	amd_iommu_domain_direct_map(dev_state->domain);  in amd_iommu_init_device()
782 	ret = amd_iommu_domain_enable_v2(dev_state->domain, pasids);  in amd_iommu_init_device()
786 	ret = iommu_attach_device(dev_state->domain, &pdev->dev);  in amd_iommu_init_device()
798 	list_add_tail(&dev_state->list, &state_list);  in amd_iommu_init_device()
805 	iommu_domain_free(dev_state->domain);  in amd_iommu_init_device()
808 	free_page((unsigned long)dev_state->states);  in amd_iommu_init_device()
811 	kfree(dev_state);  in amd_iommu_init_device()
819 	struct device_state *dev_state;  in amd_iommu_free_device()  local
830 	dev_state = __get_device_state(devid);  in amd_iommu_free_device()
831 	if (dev_state == NULL) {  in amd_iommu_free_device()
836 	list_del(&dev_state->list);  in amd_iommu_free_device()
841 	free_pasid_states(dev_state);  in amd_iommu_free_device()
843 	put_device_state(dev_state);  in amd_iommu_free_device()
848 	wait_event(dev_state->wq, !atomic_read(&dev_state->count));  in amd_iommu_free_device()
849 	free_device_state(dev_state);  in amd_iommu_free_device()
856 	struct device_state *dev_state;  in amd_iommu_set_invalid_ppr_cb()  local
869 	dev_state = __get_device_state(devid);  in amd_iommu_set_invalid_ppr_cb()
870 	if (dev_state == NULL)  in amd_iommu_set_invalid_ppr_cb()
873 	dev_state->inv_ppr_cb = cb;  in amd_iommu_set_invalid_ppr_cb()
887 	struct device_state *dev_state;  in amd_iommu_set_invalidate_ctx_cb()  local
900 	dev_state = __get_device_state(devid);  in amd_iommu_set_invalidate_ctx_cb()
901 	if (dev_state == NULL)  in amd_iommu_set_invalidate_ctx_cb()
904 	dev_state->inv_ctx_cb = cb;  in amd_iommu_set_invalidate_ctx_cb()
947 	struct device_state *dev_state;  in amd_iommu_v2_exit()  local
962 		dev_state = get_device_state(i);  in amd_iommu_v2_exit()
964 		if (dev_state == NULL)  in amd_iommu_v2_exit()
969 		put_device_state(dev_state);  in amd_iommu_v2_exit()
970 		amd_iommu_free_device(dev_state->pdev);  in amd_iommu_v2_exit()