LXR qemu/hw/s390x/virtio-ccw.h

   1/*
   2 * virtio ccw target definitions
   3 *
   4 * Copyright 2012,2015 IBM Corp.
   5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
   6 *            Pierre Morel <pmorel@linux.vnet.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_S390X_VIRTIO_CCW_H
  14#define HW_S390X_VIRTIO_CCW_H
  15
  16#include "qom/object.h"
  17#include "hw/virtio/virtio-bus.h"
  18#include "hw/s390x/s390_flic.h"
  19#include "hw/s390x/css.h"
  20#include "ccw-device.h"
  21#include "hw/s390x/css-bridge.h"
  22
  23#define VIRTIO_CCW_CU_TYPE 0x3832
  24#define VIRTIO_CCW_CHPID_TYPE 0x32
  25
  26#define CCW_CMD_SET_VQ       0x13
  27#define CCW_CMD_VDEV_RESET   0x33
  28#define CCW_CMD_READ_FEAT    0x12
  29#define CCW_CMD_WRITE_FEAT   0x11
  30#define CCW_CMD_READ_CONF    0x22
  31#define CCW_CMD_WRITE_CONF   0x21
  32#define CCW_CMD_WRITE_STATUS 0x31
  33#define CCW_CMD_SET_IND      0x43
  34#define CCW_CMD_SET_CONF_IND 0x53
  35#define CCW_CMD_READ_VQ_CONF 0x32
  36#define CCW_CMD_READ_STATUS  0x72
  37#define CCW_CMD_SET_IND_ADAPTER 0x73
  38#define CCW_CMD_SET_VIRTIO_REV 0x83
  39
  40#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device"
  41OBJECT_DECLARE_TYPE(VirtioCcwDevice, VirtIOCCWDeviceClass, VIRTIO_CCW_DEVICE)
  42
  43typedef struct VirtioBusState VirtioCcwBusState;
  44typedef struct VirtioBusClass VirtioCcwBusClass;
  45
  46#define TYPE_VIRTIO_CCW_BUS "virtio-ccw-bus"
  47DECLARE_OBJ_CHECKERS(VirtioCcwBusState, VirtioCcwBusClass,
  48                     VIRTIO_CCW_BUS, TYPE_VIRTIO_CCW_BUS)
  49
  50/*
  51 * modules can reference this symbol to avoid being loaded
  52 * into system emulators without ccw support
  53 */
  54extern bool have_virtio_ccw;
  55
  56struct VirtIOCCWDeviceClass {
  57    CCWDeviceClass parent_class;
  58    void (*realize)(VirtioCcwDevice *dev, Error **errp);
  59    void (*unrealize)(VirtioCcwDevice *dev);
  60    void (*parent_reset)(DeviceState *dev);
  61};
  62
  63/* Performance improves when virtqueue kick processing is decoupled from the
  64 * vcpu thread using ioeventfd for some devices. */
  65#define VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT 1
  66#define VIRTIO_CCW_FLAG_USE_IOEVENTFD   (1 << VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT)
  67
  68struct VirtioCcwDevice {
  69    CcwDevice parent_obj;
  70    int revision;
  71    uint32_t max_rev;
  72    VirtioBusState bus;
  73    uint32_t flags;
  74    uint8_t thinint_isc;
  75    AdapterRoutes routes;
  76    /* Guest provided values: */
  77    IndAddr *indicators;
  78    IndAddr *indicators2;
  79    IndAddr *summary_indicator;
  80    uint64_t ind_bit;
  81    bool force_revision_1;
  82};
  83
  84/* The maximum virtio revision we support. */
  85#define VIRTIO_CCW_MAX_REV 2
  86static inline int virtio_ccw_rev_max(VirtioCcwDevice *dev)
  87{
  88    return dev->max_rev;
  89}
  90
  91VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch);
  92
  93#endif
  94