include/hw/s390x/s390_flic.h

   1 /*
   2  * QEMU S390x floating interrupt controller (flic)
   3  *
   4  * Copyright 2014 IBM Corp.
   5  * Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
   6  *            Cornelia Huck <cornelia.huck@de.ibm.com>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or (at
   9  * your option) any later version. See the COPYING file in the top-level
  10  * directory.
  11  */
  12
  13 #ifndef HW_S390_FLIC_H
  14 #define HW_S390_FLIC_H
  15
  16 #include "hw/sysbus.h"
  17 #include "hw/s390x/adapter.h"
  18 #include "hw/virtio/virtio.h"
  19
  20 #define ADAPTER_ROUTES_MAX_GSI 64
  21 #define VIRTIO_CCW_QUEUE_MAX ADAPTER_ROUTES_MAX_GSI
  22
  23 typedef struct AdapterRoutes {
  24     AdapterInfo adapter;
  25     int num_routes;
  26     int gsi[ADAPTER_ROUTES_MAX_GSI];
  27 } AdapterRoutes;
  28
  29 #define TYPE_S390_FLIC_COMMON "s390-flic"
  30 #define S390_FLIC_COMMON(obj) \
  31     OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)
  32
  33 typedef struct S390FLICState {
  34     SysBusDevice parent_obj;
  35     /* to limit AdapterRoutes.num_routes for compat */
  36     uint32_t adapter_routes_max_batch;
  37
  38 } S390FLICState;
  39
  40 #define S390_FLIC_COMMON_CLASS(klass) \
  41     OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON)
  42 #define S390_FLIC_COMMON_GET_CLASS(obj) \
  43     OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON)
  44
  45 typedef struct S390FLICStateClass {
  46     DeviceClass parent_class;
  47
  48     int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
  49                                bool swap, bool maskable);
  50     int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
  51                           bool do_map);
  52     int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  53     void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  54     int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
  55                         uint16_t subchannel_nr);
  56 } S390FLICStateClass;
  57
  58 #define TYPE_KVM_S390_FLIC "s390-flic-kvm"
  59 #define KVM_S390_FLIC(obj) \
  60     OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
  61
  62 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
  63 #define QEMU_S390_FLIC(obj) \
  64     OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC)
  65
  66 typedef struct QEMUS390FLICState {
  67     S390FLICState parent_obj;
  68 } QEMUS390FLICState;
  69
  70 void s390_flic_init(void);
  71
  72 S390FLICState *s390_get_flic(void);
  73
  74 #ifdef CONFIG_KVM
  75 DeviceState *s390_flic_kvm_create(void);
  76 #else
  77 static inline DeviceState *s390_flic_kvm_create(void)
  78 {
  79     return NULL;
  80 }
  81 #endif
  82
  83 #endif /* HW_S390_FLIC_H */