24 #include <linux/irqchip/arm-gic-v4.h>
36  * agnostic actually means KVM-specific - what were you thinking?).
41  * - Any guest-visible VLPI is backed by a Linux interrupt (and a
47  * - Enabling/disabling a VLPI is done by issuing mask/unmask calls.
49  * - Guest INT/CLEAR commands are implemented through
52  * - The *bizarre* stuff (mapping/unmapping an interrupt to a VLPI, or
56  *   confines the crap to a single location. And map/unmap really is
72  * interrupts which are delivered when a VLPI targeting a non-running
81  * - VMs (or rather the VM abstraction that matters to the GIC)
86  * - mask/unmask do what is expected on the doorbell interrupt.
88  * - irq_set_affinity is used to move a VPE from one redistributor to
91  * - irq_set_vcpu_affinity once again gets hijacked for the purpose of
92  *   creating a new sub-API, namely scheduling/descheduling a VPE
100 int its_alloc_vcpu_irqs(struct its_vm *vm)  in its_alloc_vcpu_irqs()  argument
104 	vm->fwnode = irq_domain_alloc_named_id_fwnode("GICv4-vpe",  in its_alloc_vcpu_irqs()
106 	if (!vm->fwnode)  in its_alloc_vcpu_irqs()
109 	vm->domain = irq_domain_create_hierarchy(gic_domain, 0, vm->nr_vpes,  in its_alloc_vcpu_irqs()
110 						 vm->fwnode, vpe_domain_ops,  in its_alloc_vcpu_irqs()
111 						 vm);  in its_alloc_vcpu_irqs()
112 	if (!vm->domain)  in its_alloc_vcpu_irqs()
115 	for (i = 0; i < vm->nr_vpes; i++) {  in its_alloc_vcpu_irqs()
116 		vm->vpes[i]->its_vm = vm;  in its_alloc_vcpu_irqs()
117 		vm->vpes[i]->idai = true;  in its_alloc_vcpu_irqs()
120 	vpe_base_irq = __irq_domain_alloc_irqs(vm->domain, -1, vm->nr_vpes,  in its_alloc_vcpu_irqs()
121 					       NUMA_NO_NODE, vm,  in its_alloc_vcpu_irqs()
126 	for (i = 0; i < vm->nr_vpes; i++)  in its_alloc_vcpu_irqs()
127 		vm->vpes[i]->irq = vpe_base_irq + i;  in its_alloc_vcpu_irqs()
132 	if (vm->domain)  in its_alloc_vcpu_irqs()
133 		irq_domain_remove(vm->domain);  in its_alloc_vcpu_irqs()
134 	if (vm->fwnode)  in its_alloc_vcpu_irqs()
135 		irq_domain_free_fwnode(vm->fwnode);  in its_alloc_vcpu_irqs()
137 	return -ENOMEM;  in its_alloc_vcpu_irqs()
140 void its_free_vcpu_irqs(struct its_vm *vm)  in its_free_vcpu_irqs()  argument
142 	irq_domain_free_irqs(vm->vpes[0]->irq, vm->nr_vpes);  in its_free_vcpu_irqs()
143 	irq_domain_remove(vm->domain);  in its_free_vcpu_irqs()
144 	irq_domain_free_fwnode(vm->fwnode);  in its_free_vcpu_irqs()
149 	return irq_set_vcpu_affinity(vpe->irq, info);  in its_send_vpe_cmd()
172 int its_map_vlpi(int irq, struct its_vlpi_map *map)  in its_map_vlpi()  argument
177 			.map      = map,  in its_map_vlpi()
195 int its_get_vlpi(int irq, struct its_vlpi_map *map)  in its_get_vlpi()  argument
200 			.map      = map,  in its_get_vlpi()
235 	return -ENODEV;  in its_init_v4()