@@ -251,6 +251,14 @@ int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
int vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr, void *val, bool write);
+#define KVM_MAX_IRQ_ROUTES 4096
+
+struct kvm_irq_routing *kvm_gsi_routing_create(void);
+void kvm_gsi_routing_irqchip_add(struct kvm_irq_routing *routing,
+ uint32_t gsi, uint32_t pin);
+int _kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing);
+void kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing);
+
const char *exit_reason_str(unsigned int exit_reason);
void virt_pgd_alloc(struct kvm_vm *vm);
@@ -2099,6 +2099,57 @@ void kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level)
TEST_ASSERT(ret >= 0, "KVM_IRQ_LINE failed, rc: %i errno: %i", ret, errno);
}
+struct kvm_irq_routing *kvm_gsi_routing_create(void)
+{
+ struct kvm_irq_routing *routing;
+ size_t size;
+
+ size = sizeof(struct kvm_irq_routing);
+ /* Allocate space for the max number of entries: this wastes 196 KBs. */
+ size += KVM_MAX_IRQ_ROUTES * sizeof(struct kvm_irq_routing_entry);
+ routing = calloc(1, size);
+ assert(routing);
+
+ return routing;
+}
+
+void kvm_gsi_routing_irqchip_add(struct kvm_irq_routing *routing,
+ uint32_t gsi, uint32_t pin)
+{
+ int i;
+
+ assert(routing);
+ assert(routing->nr < KVM_MAX_IRQ_ROUTES);
+
+ i = routing->nr;
+ routing->entries[i].gsi = gsi;
+ routing->entries[i].type = KVM_IRQ_ROUTING_IRQCHIP;
+ routing->entries[i].flags = 0;
+ routing->entries[i].u.irqchip.irqchip = 0;
+ routing->entries[i].u.irqchip.pin = pin;
+ routing->nr++;
+}
+
+int _kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing)
+{
+ int ret;
+
+ assert(routing);
+ ret = ioctl(vm_get_fd(vm), KVM_SET_GSI_ROUTING, routing);
+ free(routing);
+
+ return ret;
+}
+
+void kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing)
+{
+ int ret;
+
+ ret = _kvm_gsi_routing_write(vm, routing);
+ TEST_ASSERT(ret == 0, "KVM_SET_GSI_ROUTING failed, rc: %i errno: %i",
+ ret, errno);
+}
+
/*
* VM Dump
*
Add an architecture independent wrapper function for creating and writing IRQ GSI routing tables. Also add a function to add irqchip entries. Signed-off-by: Ricardo Koller <ricarkol@google.com> --- .../testing/selftests/kvm/include/kvm_util.h | 8 +++ tools/testing/selftests/kvm/lib/kvm_util.c | 51 +++++++++++++++++++ 2 files changed, 59 insertions(+)