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"
  41 OBJECT_DECLARE_TYPE(VirtioCcwDevice, VirtIOCCWDeviceClass, VIRTIO_CCW_DEVICE)
  42
  43 typedef struct VirtioBusState VirtioCcwBusState;
  44 typedef struct VirtioBusClass VirtioCcwBusClass;
  45
  46 #define TYPE_VIRTIO_CCW_BUS "virtio-ccw-bus"
  47 DECLARE_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  */
  54 extern bool have_virtio_ccw;
  55
  56 struct 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
  68 struct 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
  86 static inline int virtio_ccw_rev_max(VirtioCcwDevice *dev)
  87 {
  88     return dev->max_rev;
  89 }
  90
  91 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch);
  92
  93 #endif