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
  34#define TYPE_S390_FLIC_COMMON "s390-flic"
  35#define S390_FLIC_COMMON(obj) \
  36    OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)
  37
  38typedef struct S390FLICState {
  39    SysBusDevice parent_obj;
  40    /* to limit AdapterRoutes.num_routes for compat */
  41    uint32_t adapter_routes_max_batch;
  42
  43} S390FLICState;
  44
  45#define S390_FLIC_COMMON_CLASS(klass) \
  46    OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON)
  47#define S390_FLIC_COMMON_GET_CLASS(obj) \
  48    OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON)
  49
  50typedef struct S390FLICStateClass {
  51    DeviceClass parent_class;
  52
  53    int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
  54                               bool swap, bool maskable);
  55    int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
  56                          bool do_map);
  57    int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  58    void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  59    int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
  60                        uint16_t subchannel_nr);
  61} S390FLICStateClass;
  62
  63#define TYPE_KVM_S390_FLIC "s390-flic-kvm"
  64#define KVM_S390_FLIC(obj) \
  65    OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
  66
  67#define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
  68#define QEMU_S390_FLIC(obj) \
  69    OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC)
  70
  71typedef struct QEMUS390FLICState {
  72    S390FLICState parent_obj;
  73} QEMUS390FLICState;
  74
  75void s390_flic_init(void);
  76
  77S390FLICState *s390_get_flic(void);
  78
  79#ifdef CONFIG_KVM
  80DeviceState *s390_flic_kvm_create(void);
  81#else
  82static inline DeviceState *s390_flic_kvm_create(void)
  83{
  84    return NULL;
  85}
  86#endif
  87
  88#endif /* HW_S390_FLIC_H */
  89