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#include "qom/object.h"
  21
  22/*
  23 * Reserve enough gsis to accommodate all virtio devices.
  24 * If any other user of adapter routes needs more of these,
  25 * we need to bump the value; but virtio looks like the
  26 * maximum right now.
  27 */
  28#define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX
  29
  30typedef struct AdapterRoutes {
  31    AdapterInfo adapter;
  32    int num_routes;
  33    int gsi[ADAPTER_ROUTES_MAX_GSI];
  34} AdapterRoutes;
  35
  36extern const VMStateDescription vmstate_adapter_routes;
  37
  38#define VMSTATE_ADAPTER_ROUTES(_f, _s) \
  39    VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes)
  40
  41#define TYPE_S390_FLIC_COMMON "s390-flic"
  42OBJECT_DECLARE_TYPE(S390FLICState, S390FLICStateClass,
  43                    S390_FLIC_COMMON)
  44
  45struct S390FLICState {
  46    SysBusDevice parent_obj;
  47    /* to limit AdapterRoutes.num_routes for compat */
  48    uint32_t adapter_routes_max_batch;
  49    bool ais_supported;
  50};
  51
  52
  53struct S390FLICStateClass {
  54    DeviceClass parent_class;
  55
  56    int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
  57                               bool swap, bool maskable, uint8_t flags);
  58    int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
  59                          bool do_map);
  60    int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  61    void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
  62    int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
  63                        uint16_t subchannel_nr);
  64    int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode);
  65    int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc,
  66                       uint8_t flags);
  67    void (*inject_service)(S390FLICState *fs, uint32_t parm);
  68    void (*inject_io)(S390FLICState *fs, uint16_t subchannel_id,
  69                      uint16_t subchannel_nr, uint32_t io_int_parm,
  70                      uint32_t io_int_word);
  71    void (*inject_crw_mchk)(S390FLICState *fs);
  72};
  73
  74#define TYPE_KVM_S390_FLIC "s390-flic-kvm"
  75typedef struct KVMS390FLICState KVMS390FLICState;
  76DECLARE_INSTANCE_CHECKER(KVMS390FLICState, KVM_S390_FLIC,
  77                         TYPE_KVM_S390_FLIC)
  78
  79#define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
  80OBJECT_DECLARE_SIMPLE_TYPE(QEMUS390FLICState, QEMU_S390_FLIC)
  81
  82#define SIC_IRQ_MODE_ALL 0
  83#define SIC_IRQ_MODE_SINGLE 1
  84#define AIS_MODE_MASK(isc) (0x80 >> isc)
  85
  86#define ISC_TO_PENDING_IO(_isc) (0x80 >> (_isc))
  87#define CR6_TO_PENDING_IO(_cr6) (((_cr6) >> 24) & 0xff)
  88
  89/* organize the ISC bits so that the macros above work */
  90#define FLIC_PENDING_IO_ISC7            (1 << 0)
  91#define FLIC_PENDING_IO_ISC6            (1 << 1)
  92#define FLIC_PENDING_IO_ISC5            (1 << 2)
  93#define FLIC_PENDING_IO_ISC4            (1 << 3)
  94#define FLIC_PENDING_IO_ISC3            (1 << 4)
  95#define FLIC_PENDING_IO_ISC2            (1 << 5)
  96#define FLIC_PENDING_IO_ISC1            (1 << 6)
  97#define FLIC_PENDING_IO_ISC0            (1 << 7)
  98#define FLIC_PENDING_SERVICE            (1 << 8)
  99#define FLIC_PENDING_MCHK_CR            (1 << 9)
 100
 101#define FLIC_PENDING_IO (FLIC_PENDING_IO_ISC0 | FLIC_PENDING_IO_ISC1 | \
 102                         FLIC_PENDING_IO_ISC2 | FLIC_PENDING_IO_ISC3 | \
 103                         FLIC_PENDING_IO_ISC4 | FLIC_PENDING_IO_ISC5 | \
 104                         FLIC_PENDING_IO_ISC6 | FLIC_PENDING_IO_ISC7)
 105
 106typedef struct QEMUS390FlicIO {
 107    uint16_t id;
 108    uint16_t nr;
 109    uint32_t parm;
 110    uint32_t word;
 111    QLIST_ENTRY(QEMUS390FlicIO) next;
 112} QEMUS390FlicIO;
 113
 114struct QEMUS390FLICState {
 115    S390FLICState parent_obj;
 116    uint32_t pending;
 117    uint32_t service_param;
 118    uint8_t simm;
 119    uint8_t nimm;
 120    QLIST_HEAD(, QEMUS390FlicIO) io[8];
 121};
 122
 123uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic);
 124QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic,
 125                                          uint64_t cr6);
 126void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic);
 127bool qemu_s390_flic_has_service(QEMUS390FLICState *flic);
 128bool qemu_s390_flic_has_io(QEMUS390FLICState *fs, uint64_t cr6);
 129bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic);
 130bool qemu_s390_flic_has_any(QEMUS390FLICState *flic);
 131
 132void s390_flic_init(void);
 133
 134S390FLICState *s390_get_flic(void);
 135QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs);
 136S390FLICStateClass *s390_get_flic_class(S390FLICState *fs);
 137void s390_crw_mchk(void);
 138void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
 139                       uint32_t io_int_parm, uint32_t io_int_word);
 140bool ais_needed(void *opaque);
 141
 142#endif /* HW_S390_FLIC_H */
 143