e7be8d4997
During migration we should transfer ais states to the target guest. This patch introduces a subsection to kvm_s390_flic_vmstate and new vmsd for qemu_flic. The ais states need to be migrated only when ais is supported. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
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* QEMU S390x floating interrupt controller (flic)
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*
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* Copyright 2014 IBM Corp.
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* Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
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* Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef HW_S390_FLIC_H
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#define HW_S390_FLIC_H
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#include "hw/sysbus.h"
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#include "hw/s390x/adapter.h"
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#include "hw/virtio/virtio.h"
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/*
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* Reserve enough gsis to accommodate all virtio devices.
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* If any other user of adapter routes needs more of these,
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* we need to bump the value; but virtio looks like the
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* maximum right now.
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*/
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#define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX
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typedef struct AdapterRoutes {
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AdapterInfo adapter;
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int num_routes;
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int gsi[ADAPTER_ROUTES_MAX_GSI];
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} AdapterRoutes;
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extern const VMStateDescription vmstate_adapter_routes;
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#define VMSTATE_ADAPTER_ROUTES(_f, _s) \
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VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes)
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#define TYPE_S390_FLIC_COMMON "s390-flic"
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#define S390_FLIC_COMMON(obj) \
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OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)
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typedef struct S390FLICState {
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SysBusDevice parent_obj;
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/* to limit AdapterRoutes.num_routes for compat */
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uint32_t adapter_routes_max_batch;
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bool ais_supported;
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} S390FLICState;
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#define S390_FLIC_COMMON_CLASS(klass) \
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OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON)
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#define S390_FLIC_COMMON_GET_CLASS(obj) \
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OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON)
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typedef struct S390FLICStateClass {
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DeviceClass parent_class;
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int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
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bool swap, bool maskable, uint8_t flags);
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int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
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bool do_map);
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int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
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void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
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int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
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uint16_t subchannel_nr);
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int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode);
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int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc,
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uint8_t flags);
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} S390FLICStateClass;
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#define TYPE_KVM_S390_FLIC "s390-flic-kvm"
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#define KVM_S390_FLIC(obj) \
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OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
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#define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
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#define QEMU_S390_FLIC(obj) \
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OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC)
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#define SIC_IRQ_MODE_ALL 0
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#define SIC_IRQ_MODE_SINGLE 1
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#define AIS_MODE_MASK(isc) (0x80 >> isc)
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typedef struct QEMUS390FLICState {
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S390FLICState parent_obj;
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uint8_t simm;
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uint8_t nimm;
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} QEMUS390FLICState;
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void s390_flic_init(void);
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S390FLICState *s390_get_flic(void);
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bool ais_needed(void *opaque);
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#ifdef CONFIG_KVM
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DeviceState *s390_flic_kvm_create(void);
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#else
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static inline DeviceState *s390_flic_kvm_create(void)
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{
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return NULL;
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}
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#endif
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#endif /* HW_S390_FLIC_H */
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