LXR qemu/include/hw/s390x/s390

   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/*
  21 * Reserve enough gsis to accommodate all virtio devices.
  22 * If any other user of adapter routes needs more of these,
  23 * we need to bump the value; but virtio looks like the
  24 * maximum right now.
  25 */
  26#define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX
  27
  28typedef struct AdapterRoutes {
  29    AdapterInfo adapter;
  30    int num_routes;
  31    int gsi[ADAPTER_ROUTES_MAX_GSI];
  32} AdapterRoutes;
  33
  34extern const VMStateDescription vmstate_adapter_routes;
  35
  36#define VMSTATE_ADAPTER_ROUTES(_f, _s) \
  37    VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes)
  38
  39#define TYPE_S390_FLIC_COMMON "s390-flic"
  40#define S390_FLIC_COMMON(obj) \
  41    OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)
  42
  43typedef struct S390FLICState {
  44    SysBusDevice parent_obj;
  45    /* to limit AdapterRoutes.num_routes for compat */
  46    uint32_t adapter_routes_max_batch;
  47    bool ais_supported;
  48} S390FLICState;
  49
  50#define S390_FLIC_COMMON_CLASS(klass) \
  51    OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON)
  52#define S390_FLIC_COMMON_GET_CLASS(obj) \
  53    OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON)
  54
  55typedef struct S390FLICStateClass {
  56    DeviceClass parent_class;
  57
  58    int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
  59                               bool swap, bool maskable, uint8_t flags);
  60    int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
  61                          bool do_map);
  62    int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  63    void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  64    int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
  65                        uint16_t subchannel_nr);
  66    int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode);
  67    int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc,
  68                       uint8_t flags);
  69} S390FLICStateClass;
  70
  71#define TYPE_KVM_S390_FLIC "s390-flic-kvm"
  72#define KVM_S390_FLIC(obj) \
  73    OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
  74
  75#define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
  76#define QEMU_S390_FLIC(obj) \
  77    OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC)
  78
  79#define SIC_IRQ_MODE_ALL 0
  80#define SIC_IRQ_MODE_SINGLE 1
  81#define AIS_MODE_MASK(isc) (0x80 >> isc)
  82
  83typedef struct QEMUS390FLICState {
  84    S390FLICState parent_obj;
  85    uint8_t simm;
  86    uint8_t nimm;
  87} QEMUS390FLICState;
  88
  89void s390_flic_init(void);
  90
  91S390FLICState *s390_get_flic(void);
  92bool ais_needed(void *opaque);
  93
  94#ifdef CONFIG_KVM
  95DeviceState *s390_flic_kvm_create(void);
  96#else
  97static inline DeviceState *s390_flic_kvm_create(void)
  98{
  99    return NULL;
 100}
 101#endif
 102
 103#endif /* HW_S390_FLIC_H */
 104