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#include "qemu/queue.h"
  20
  21/*
  22 * Reserve enough gsis to accommodate all virtio devices.
  23 * If any other user of adapter routes needs more of these,
  24 * we need to bump the value; but virtio looks like the
  25 * maximum right now.
  26 */
  27#define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX
  28
  29typedef struct AdapterRoutes {
  30    AdapterInfo adapter;
  31    int num_routes;
  32    int gsi[ADAPTER_ROUTES_MAX_GSI];
  33} AdapterRoutes;
  34
  35extern const VMStateDescription vmstate_adapter_routes;
  36
  37#define VMSTATE_ADAPTER_ROUTES(_f, _s) \
  38    VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes)
  39
  40#define TYPE_S390_FLIC_COMMON "s390-flic"
  41#define S390_FLIC_COMMON(obj) \
  42    OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)
  43
  44typedef struct S390FLICState {
  45    SysBusDevice parent_obj;
  46    /* to limit AdapterRoutes.num_routes for compat */
  47    uint32_t adapter_routes_max_batch;
  48    bool ais_supported;
  49} S390FLICState;
  50
  51#define S390_FLIC_COMMON_CLASS(klass) \
  52    OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON)
  53#define S390_FLIC_COMMON_GET_CLASS(obj) \
  54    OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON)
  55
  56typedef struct S390FLICStateClass {
  57    DeviceClass parent_class;
  58
  59    int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
  60                               bool swap, bool maskable, uint8_t flags);
  61    int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
  62                          bool do_map);
  63    int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  64    void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  65    int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
  66                        uint16_t subchannel_nr);
  67    int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode);
  68    int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc,
  69                       uint8_t flags);
  70    void (*inject_service)(S390FLICState *fs, uint32_t parm);
  71    void (*inject_io)(S390FLICState *fs, uint16_t subchannel_id,
  72                      uint16_t subchannel_nr, uint32_t io_int_parm,
  73                      uint32_t io_int_word);
  74    void (*inject_crw_mchk)(S390FLICState *fs);
  75} S390FLICStateClass;
  76
  77#define TYPE_KVM_S390_FLIC "s390-flic-kvm"
  78#define KVM_S390_FLIC(obj) \
  79    OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
  80
  81#define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
  82#define QEMU_S390_FLIC(obj) \
  83    OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC)
  84
  85#define SIC_IRQ_MODE_ALL 0
  86#define SIC_IRQ_MODE_SINGLE 1
  87#define AIS_MODE_MASK(isc) (0x80 >> isc)
  88
  89#define ISC_TO_PENDING_IO(_isc) (0x80 >> (_isc))
  90#define CR6_TO_PENDING_IO(_cr6) (((_cr6) >> 24) & 0xff)
  91
  92/* organize the ISC bits so that the macros above work */
  93#define FLIC_PENDING_IO_ISC7            (1 << 0)
  94#define FLIC_PENDING_IO_ISC6            (1 << 1)
  95#define FLIC_PENDING_IO_ISC5            (1 << 2)
  96#define FLIC_PENDING_IO_ISC4            (1 << 3)
  97#define FLIC_PENDING_IO_ISC3            (1 << 4)
  98#define FLIC_PENDING_IO_ISC2            (1 << 5)
  99#define FLIC_PENDING_IO_ISC1            (1 << 6)
 100#define FLIC_PENDING_IO_ISC0            (1 << 7)
 101#define FLIC_PENDING_SERVICE            (1 << 8)
 102#define FLIC_PENDING_MCHK_CR            (1 << 9)
 103
 104#define FLIC_PENDING_IO (FLIC_PENDING_IO_ISC0 | FLIC_PENDING_IO_ISC1 | \
 105                         FLIC_PENDING_IO_ISC2 | FLIC_PENDING_IO_ISC3 | \
 106                         FLIC_PENDING_IO_ISC4 | FLIC_PENDING_IO_ISC5 | \
 107                         FLIC_PENDING_IO_ISC6 | FLIC_PENDING_IO_ISC7)
 108
 109typedef struct QEMUS390FlicIO {
 110    uint16_t id;
 111    uint16_t nr;
 112    uint32_t parm;
 113    uint32_t word;
 114    QLIST_ENTRY(QEMUS390FlicIO) next;
 115} QEMUS390FlicIO;
 116
 117typedef struct QEMUS390FLICState {
 118    S390FLICState parent_obj;
 119    uint32_t pending;
 120    uint32_t service_param;
 121    uint8_t simm;
 122    uint8_t nimm;
 123    QLIST_HEAD(, QEMUS390FlicIO) io[8];
 124} QEMUS390FLICState;
 125
 126uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic);
 127QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic,
 128                                          uint64_t cr6);
 129void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic);
 130bool qemu_s390_flic_has_service(QEMUS390FLICState *flic);
 131bool qemu_s390_flic_has_io(QEMUS390FLICState *fs, uint64_t cr6);
 132bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic);
 133bool qemu_s390_flic_has_any(QEMUS390FLICState *flic);
 134
 135void s390_flic_init(void);
 136
 137S390FLICState *s390_get_flic(void);
 138QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs);
 139S390FLICStateClass *s390_get_flic_class(S390FLICState *fs);
 140bool ais_needed(void *opaque);
 141
 142#endif /* HW_S390_FLIC_H */
 143