1 // SPDX-License-Identifier: GPL-2.0-only
18 int mshv_update_routing_table(struct mshv_partition *partition,  in mshv_update_routing_table()  argument
31 			return -EINVAL;  in mshv_update_routing_table()
34 			return -EINVAL;  in mshv_update_routing_table()
43 		return -ENOMEM;  in mshv_update_routing_table()
45 	new->num_rt_entries = nr_rt_entries;  in mshv_update_routing_table()
49 		girq = &new->mshv_girq_info_tbl[ue[i].gsi];  in mshv_update_routing_table()
54 		if (girq->guest_irq_num != 0) {  in mshv_update_routing_table()
55 			r = -EINVAL;  in mshv_update_routing_table()
59 		girq->guest_irq_num = ue[i].gsi;  in mshv_update_routing_table()
60 		girq->girq_addr_lo = ue[i].address_lo;  in mshv_update_routing_table()
61 		girq->girq_addr_hi = ue[i].address_hi;  in mshv_update_routing_table()
62 		girq->girq_irq_data = ue[i].data;  in mshv_update_routing_table()
63 		girq->girq_entry_valid = true;  in mshv_update_routing_table()
67 	mutex_lock(&partition->pt_irq_lock);  in mshv_update_routing_table()
68 	old = rcu_dereference_protected(partition->pt_girq_tbl, 1);  in mshv_update_routing_table()
69 	rcu_assign_pointer(partition->pt_girq_tbl, new);  in mshv_update_routing_table()
70 	mshv_irqfd_routing_update(partition);  in mshv_update_routing_table()
71 	mutex_unlock(&partition->pt_irq_lock);  in mshv_update_routing_table()
73 	synchronize_srcu_expedited(&partition->pt_irq_srcu);  in mshv_update_routing_table()
83 void mshv_free_routing_table(struct mshv_partition *partition)  in mshv_free_routing_table()  argument
86 				   rcu_access_pointer(partition->pt_girq_tbl);  in mshv_free_routing_table()
92 mshv_ret_girq_entry(struct mshv_partition *partition, u32 irqnum)  in mshv_ret_girq_entry()  argument
97 	girq_tbl = srcu_dereference_check(partition->pt_girq_tbl,  in mshv_ret_girq_entry()
98 					  &partition->pt_irq_srcu,  in mshv_ret_girq_entry()
99 					  lockdep_is_held(&partition->pt_irq_lock));  in mshv_ret_girq_entry()
100 	if (!girq_tbl || irqnum >= girq_tbl->num_rt_entries) {  in mshv_ret_girq_entry()
109 	return girq_tbl->mshv_girq_info_tbl[irqnum];  in mshv_ret_girq_entry()
116 	if (!ent || !ent->girq_entry_valid)  in mshv_copy_girq_info()
119 	lirq->lapic_vector = ent->girq_irq_data & 0xFF;  in mshv_copy_girq_info()
120 	lirq->lapic_apic_id = (ent->girq_addr_lo >> 12) & 0xFF;  in mshv_copy_girq_info()
121 	lirq->lapic_control.interrupt_type = (ent->girq_irq_data & 0x700) >> 8;  in mshv_copy_girq_info()
122 	lirq->lapic_control.level_triggered = (ent->girq_irq_data >> 15) & 0x1;  in mshv_copy_girq_info()
123 	lirq->lapic_control.logical_dest_mode = (ent->girq_addr_lo >> 2) & 0x1;  in mshv_copy_girq_info()