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s390x/virtio-ccw: wire up irq routing and irqfds

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Make use of the new s390 adapter irq routing support to enable real
in-kernel irqfds for virtio-ccw with adapter interrupts.

Note that s390 doesn't provide the common KVM_CAP_IRQCHIP capability, but
rather needs KVM_CAP_S390_IRQCHIP to be enabled. This is to ensure backward
compatibility.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Cornelia Huck 2013-07-15 17:45:03 +02:00
parent 7bca3892cb
commit d426d9fba8
11 changed files with 329 additions and 18 deletions
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12
include/hw/s390x/s390_flic.h
View file

@ -14,6 +14,14 @@
#define __HW_S390_FLIC_H
#include "hw/sysbus.h"
#include "hw/s390x/adapter.h"
#include "hw/virtio/virtio.h"
typedef struct AdapterRoutes {
AdapterInfo adapter;
int num_routes;
int gsi[VIRTIO_PCI_QUEUE_MAX];
} AdapterRoutes;
#define TYPE_S390_FLIC_COMMON "s390-flic"
#define S390_FLIC_COMMON(obj) \
@ -34,6 +42,10 @@ typedef struct S390FLICStateClass {
int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
bool swap, bool maskable);
int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
bool do_map);
int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
} S390FLICStateClass;
#define TYPE_KVM_S390_FLIC "s390-flic-kvm"