80 	struct device_state *dev_state;  member
96 static void free_pasid_states(struct device_state *dev_state);
110 	struct device_state *dev_state;  in __get_device_state()  local
112 	list_for_each_entry(dev_state, &state_list, list) {  in __get_device_state()
113 		if (dev_state->devid == devid)  in __get_device_state()
114 			return dev_state;  in __get_device_state()
122 	struct device_state *dev_state;  in get_device_state()  local
126 	dev_state = __get_device_state(devid);  in get_device_state()
127 	if (dev_state != NULL)  in get_device_state()
128 		atomic_inc(&dev_state->count);  in get_device_state()
131 	return dev_state;  in get_device_state()
134 static void free_device_state(struct device_state *dev_state)  in free_device_state()  argument
142 	group = iommu_group_get(&dev_state->pdev->dev);  in free_device_state()
146 	iommu_detach_group(dev_state->domain, group);  in free_device_state()
151 	iommu_domain_free(dev_state->domain);  in free_device_state()
154 	kfree(dev_state);  in free_device_state()
157 static void put_device_state(struct device_state *dev_state)  in put_device_state()  argument
159 	if (atomic_dec_and_test(&dev_state->count))  in put_device_state()
160 		wake_up(&dev_state->wq);  in put_device_state()
164 static struct pasid_state **__get_pasid_state_ptr(struct device_state *dev_state,  in __get_pasid_state_ptr()  argument
170 	level = dev_state->pasid_levels;  in __get_pasid_state_ptr()
171 	root  = dev_state->states;  in __get_pasid_state_ptr()
197 static int set_pasid_state(struct device_state *dev_state,  in set_pasid_state()  argument
205 	spin_lock_irqsave(&dev_state->lock, flags);  in set_pasid_state()
206 	ptr = __get_pasid_state_ptr(dev_state, pasid, true);  in set_pasid_state()
221 	spin_unlock_irqrestore(&dev_state->lock, flags);  in set_pasid_state()
226 static void clear_pasid_state(struct device_state *dev_state, int pasid)  in clear_pasid_state()  argument
231 	spin_lock_irqsave(&dev_state->lock, flags);  in clear_pasid_state()
232 	ptr = __get_pasid_state_ptr(dev_state, pasid, true);  in clear_pasid_state()
240 	spin_unlock_irqrestore(&dev_state->lock, flags);  in clear_pasid_state()
243 static struct pasid_state *get_pasid_state(struct device_state *dev_state,  in get_pasid_state()  argument
249 	spin_lock_irqsave(&dev_state->lock, flags);  in get_pasid_state()
250 	ptr = __get_pasid_state_ptr(dev_state, pasid, false);  in get_pasid_state()
260 	spin_unlock_irqrestore(&dev_state->lock, flags);  in get_pasid_state()
331 static void free_pasid_states(struct device_state *dev_state)  in free_pasid_states()  argument
336 	for (i = 0; i < dev_state->max_pasids; ++i) {  in free_pasid_states()
337 		pasid_state = get_pasid_state(dev_state, i);  in free_pasid_states()
353 		put_device_state(dev_state);  in free_pasid_states()
356 	if (dev_state->pasid_levels == 2)  in free_pasid_states()
357 		free_pasid_states_level2(dev_state->states);  in free_pasid_states()
358 	else if (dev_state->pasid_levels == 1)  in free_pasid_states()
359 		free_pasid_states_level1(dev_state->states);  in free_pasid_states()
361 		BUG_ON(dev_state->pasid_levels != 0);  in free_pasid_states()
363 	free_page((unsigned long)dev_state->states);  in free_pasid_states()
375 	struct device_state *dev_state;  in __mn_flush_page()  local
378 	dev_state   = pasid_state->device_state;  in __mn_flush_page()
380 	amd_iommu_flush_page(dev_state->domain, pasid_state->pasid, address);  in __mn_flush_page()
399 	struct device_state *dev_state;  in mn_invalidate_range()  local
402 	dev_state   = pasid_state->device_state;  in mn_invalidate_range()
405 		amd_iommu_flush_page(dev_state->domain, pasid_state->pasid,  in mn_invalidate_range()
408 		amd_iommu_flush_tlb(dev_state->domain, pasid_state->pasid);  in mn_invalidate_range()
414 	struct device_state *dev_state;  in mn_release()  local
420 	dev_state      = pasid_state->device_state;  in mn_release()
423 	if (run_inv_ctx_cb && dev_state->inv_ctx_cb)  in mn_release()
424 		dev_state->inv_ctx_cb(dev_state->pdev, pasid_state->pasid);  in mn_release()
446 static void finish_pri_tag(struct device_state *dev_state,  in finish_pri_tag()  argument
455 		amd_iommu_complete_ppr(dev_state->pdev, pasid_state->pasid,  in finish_pri_tag()
467 	if (!fault->dev_state->inv_ppr_cb) {  in handle_fault_error()
472 	status = fault->dev_state->inv_ppr_cb(fault->dev_state->pdev,  in handle_fault_error()
543 	finish_pri_tag(fault->dev_state, fault->state, fault->tag);  in do_fault()
554 	struct device_state *dev_state;  in ppr_notifier()  local
583 	dev_state = get_device_state(iommu_fault->device_id);  in ppr_notifier()
584 	if (dev_state == NULL)  in ppr_notifier()
587 	pasid_state = get_pasid_state(dev_state, iommu_fault->pasid);  in ppr_notifier()
590 		amd_iommu_complete_ppr(dev_state->pdev, iommu_fault->pasid,  in ppr_notifier()
604 		finish_pri_tag(dev_state, pasid_state, tag);  in ppr_notifier()
608 	fault->dev_state = dev_state;  in ppr_notifier()
626 	put_device_state(dev_state);  in ppr_notifier()
640 	struct device_state *dev_state;  in amd_iommu_bind_pasid()  local
651 	dev_state = get_device_state(devid);  in amd_iommu_bind_pasid()
653 	if (dev_state == NULL)  in amd_iommu_bind_pasid()
657 	if (pasid < 0 || pasid >= dev_state->max_pasids)  in amd_iommu_bind_pasid()
672 	pasid_state->device_state = dev_state;  in amd_iommu_bind_pasid()
683 	ret = set_pasid_state(dev_state, pasid_state, pasid);  in amd_iommu_bind_pasid()
687 	ret = amd_iommu_domain_set_gcr3(dev_state->domain, pasid,  in amd_iommu_bind_pasid()
705 	clear_pasid_state(dev_state, pasid);  in amd_iommu_bind_pasid()
715 	put_device_state(dev_state);  in amd_iommu_bind_pasid()
724 	struct device_state *dev_state;  in amd_iommu_unbind_pasid()  local
733 	dev_state = get_device_state(devid);  in amd_iommu_unbind_pasid()
734 	if (dev_state == NULL)  in amd_iommu_unbind_pasid()
737 	if (pasid < 0 || pasid >= dev_state->max_pasids)  in amd_iommu_unbind_pasid()
740 	pasid_state = get_pasid_state(dev_state, pasid);  in amd_iommu_unbind_pasid()
750 	clear_pasid_state(dev_state, pasid_state->pasid);  in amd_iommu_unbind_pasid()
762 	put_device_state(dev_state);  in amd_iommu_unbind_pasid()
765 	put_device_state(dev_state);  in amd_iommu_unbind_pasid()
771 	struct device_state *dev_state;  in amd_iommu_init_device()  local
787 	dev_state = kzalloc(sizeof(*dev_state), GFP_KERNEL);  in amd_iommu_init_device()
788 	if (dev_state == NULL)  in amd_iommu_init_device()
791 	spin_lock_init(&dev_state->lock);  in amd_iommu_init_device()
792 	init_waitqueue_head(&dev_state->wq);  in amd_iommu_init_device()
793 	dev_state->pdev  = pdev;  in amd_iommu_init_device()
794 	dev_state->devid = devid;  in amd_iommu_init_device()
797 	for (dev_state->pasid_levels = 0; (tmp - 1) & ~0x1ff; tmp >>= 9)  in amd_iommu_init_device()
798 		dev_state->pasid_levels += 1;  in amd_iommu_init_device()
800 	atomic_set(&dev_state->count, 1);  in amd_iommu_init_device()
801 	dev_state->max_pasids = pasids;  in amd_iommu_init_device()
804 	dev_state->states = (void *)get_zeroed_page(GFP_KERNEL);  in amd_iommu_init_device()
805 	if (dev_state->states == NULL)  in amd_iommu_init_device()
808 	dev_state->domain = iommu_domain_alloc(&pci_bus_type);  in amd_iommu_init_device()
809 	if (dev_state->domain == NULL)  in amd_iommu_init_device()
812 	amd_iommu_domain_direct_map(dev_state->domain);  in amd_iommu_init_device()
814 	ret = amd_iommu_domain_enable_v2(dev_state->domain, pasids);  in amd_iommu_init_device()
824 	ret = iommu_attach_group(dev_state->domain, group);  in amd_iommu_init_device()
838 	list_add_tail(&dev_state->list, &state_list);  in amd_iommu_init_device()
848 	iommu_domain_free(dev_state->domain);  in amd_iommu_init_device()
851 	free_page((unsigned long)dev_state->states);  in amd_iommu_init_device()
854 	kfree(dev_state);  in amd_iommu_init_device()
862 	struct device_state *dev_state;  in amd_iommu_free_device()  local
873 	dev_state = __get_device_state(devid);  in amd_iommu_free_device()
874 	if (dev_state == NULL) {  in amd_iommu_free_device()
879 	list_del(&dev_state->list);  in amd_iommu_free_device()
884 	free_pasid_states(dev_state);  in amd_iommu_free_device()
886 	put_device_state(dev_state);  in amd_iommu_free_device()
891 	wait_event(dev_state->wq, !atomic_read(&dev_state->count));  in amd_iommu_free_device()
892 	free_device_state(dev_state);  in amd_iommu_free_device()
899 	struct device_state *dev_state;  in amd_iommu_set_invalid_ppr_cb()  local
912 	dev_state = __get_device_state(devid);  in amd_iommu_set_invalid_ppr_cb()
913 	if (dev_state == NULL)  in amd_iommu_set_invalid_ppr_cb()
916 	dev_state->inv_ppr_cb = cb;  in amd_iommu_set_invalid_ppr_cb()
930 	struct device_state *dev_state;  in amd_iommu_set_invalidate_ctx_cb()  local
943 	dev_state = __get_device_state(devid);  in amd_iommu_set_invalidate_ctx_cb()
944 	if (dev_state == NULL)  in amd_iommu_set_invalidate_ctx_cb()
947 	dev_state->inv_ctx_cb = cb;  in amd_iommu_set_invalidate_ctx_cb()
990 	struct device_state *dev_state;  in amd_iommu_v2_exit()  local
1005 		dev_state = get_device_state(i);  in amd_iommu_v2_exit()
1007 		if (dev_state == NULL)  in amd_iommu_v2_exit()
1012 		put_device_state(dev_state);  in amd_iommu_v2_exit()
1013 		amd_iommu_free_device(dev_state->pdev);  in amd_iommu_v2_exit()