1 // SPDX-License-Identifier: GPL-2.0-only
29 	irq_rt = srcu_dereference_check(kvm->irq_routing, &kvm->irq_srcu,  in kvm_irq_map_gsi()
30 					lockdep_is_held(&kvm->irq_lock));  in kvm_irq_map_gsi()
31 	if (irq_rt && gsi < irq_rt->nr_rt_entries) {  in kvm_irq_map_gsi()
32 		hlist_for_each_entry(e, &irq_rt->map[gsi], link) {  in kvm_irq_map_gsi()
45 	irq_rt = srcu_dereference(kvm->irq_routing, &kvm->irq_srcu);  in kvm_irq_map_chip_pin()
46 	return irq_rt->chip[irqchip][pin];  in kvm_irq_map_chip_pin()
49 int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi)  in kvm_send_userspace_msi()  argument
53 	if (!irqchip_in_kernel(kvm) || (msi->flags & ~KVM_MSI_VALID_DEVID))  in kvm_send_userspace_msi()
54 		return -EINVAL;  in kvm_send_userspace_msi()
56 	route.msi.address_lo = msi->address_lo;  in kvm_send_userspace_msi()
57 	route.msi.address_hi = msi->address_hi;  in kvm_send_userspace_msi()
58 	route.msi.data = msi->data;  in kvm_send_userspace_msi()
59 	route.msi.flags = msi->flags;  in kvm_send_userspace_msi()
60 	route.msi.devid = msi->devid;  in kvm_send_userspace_msi()
75 	int ret = -1, i, idx;  in kvm_set_irq()
83 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_set_irq()
85 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_set_irq()
87 	while (i--) {  in kvm_set_irq()
107 	for (i = 0; i < rt->nr_rt_entries; ++i) {  in free_irq_routing_table()
111 		hlist_for_each_entry_safe(e, n, &rt->map[i], link) {  in free_irq_routing_table()
112 			hlist_del(&e->link);  in free_irq_routing_table()
124 	struct kvm_irq_routing_table *rt = rcu_access_pointer(kvm->irq_routing);  in kvm_free_irq_routing()
135 	u32 gsi = array_index_nospec(ue->gsi, KVM_MAX_IRQ_ROUTES);  in setup_routing_entry()
139 	 * Allow only one to one mapping between GSI and non-irqchip routing.  in setup_routing_entry()
141 	hlist_for_each_entry(ei, &rt->map[gsi], link)  in setup_routing_entry()
142 		if (ei->type != KVM_IRQ_ROUTING_IRQCHIP ||  in setup_routing_entry()
143 		    ue->type != KVM_IRQ_ROUTING_IRQCHIP ||  in setup_routing_entry()
144 		    ue->u.irqchip.irqchip == ei->irqchip.irqchip)  in setup_routing_entry()
145 			return -EINVAL;  in setup_routing_entry()
147 	e->gsi = gsi;  in setup_routing_entry()
148 	e->type = ue->type;  in setup_routing_entry()
152 	if (e->type == KVM_IRQ_ROUTING_IRQCHIP)  in setup_routing_entry()
153 		rt->chip[e->irqchip.irqchip][e->irqchip.pin] = e->gsi;  in setup_routing_entry()
155 	hlist_add_head(&e->link, &rt->map[e->gsi]);  in setup_routing_entry()
181 			return -EINVAL;  in kvm_set_irq_routing()
187 	new = kzalloc(struct_size(new, map, nr_rt_entries), GFP_KERNEL_ACCOUNT);  in kvm_set_irq_routing()
189 		return -ENOMEM;  in kvm_set_irq_routing()
191 	new->nr_rt_entries = nr_rt_entries;  in kvm_set_irq_routing()
194 			new->chip[i][j] = -1;  in kvm_set_irq_routing()
197 		r = -ENOMEM;  in kvm_set_irq_routing()
202 		r = -EINVAL;  in kvm_set_irq_routing()
203 		switch (ue->type) {  in kvm_set_irq_routing()
205 			if (ue->flags & ~KVM_MSI_VALID_DEVID)  in kvm_set_irq_routing()
209 			if (ue->flags)  in kvm_set_irq_routing()
219 	mutex_lock(&kvm->irq_lock);  in kvm_set_irq_routing()
220 	old = rcu_dereference_protected(kvm->irq_routing, 1);  in kvm_set_irq_routing()
221 	rcu_assign_pointer(kvm->irq_routing, new);  in kvm_set_irq_routing()
224 	mutex_unlock(&kvm->irq_lock);  in kvm_set_irq_routing()
228 	synchronize_srcu_expedited(&kvm->irq_srcu);  in kvm_set_irq_routing()