hw/s390-virtio-bus.h

   1 /*
   2  * QEMU S390x VirtIO BUS definitions
   3  *
   4  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #ifndef HW_S390_VIRTIO_BUS_H
  20 #define HW_S390_VIRTIO_BUS_H 1
  21
  22 #include "virtio-blk.h"
  23 #include "virtio-net.h"
  24 #include "virtio-rng.h"
  25 #include "virtio-serial.h"
  26 #include "virtio-scsi.h"
  27 #include "virtio-bus.h"
  28
  29 #define VIRTIO_DEV_OFFS_TYPE            0       /* 8 bits */
  30 #define VIRTIO_DEV_OFFS_NUM_VQ          1       /* 8 bits */
  31 #define VIRTIO_DEV_OFFS_FEATURE_LEN     2       /* 8 bits */
  32 #define VIRTIO_DEV_OFFS_CONFIG_LEN      3       /* 8 bits */
  33 #define VIRTIO_DEV_OFFS_STATUS          4       /* 8 bits */
  34 #define VIRTIO_DEV_OFFS_CONFIG          5       /* dynamic */
  35
  36 #define VIRTIO_VQCONFIG_OFFS_TOKEN      0       /* 64 bits */
  37 #define VIRTIO_VQCONFIG_OFFS_ADDRESS    8       /* 64 bits */
  38 #define VIRTIO_VQCONFIG_OFFS_NUM        16      /* 16 bits */
  39 #define VIRTIO_VQCONFIG_LEN             24
  40
  41 #define VIRTIO_RING_LEN                 (TARGET_PAGE_SIZE * 3)
  42 #define VIRTIO_VRING_AVAIL_IDX_OFFS 2
  43 #define VIRTIO_VRING_USED_IDX_OFFS 2
  44 #define S390_DEVICE_PAGES               512
  45
  46 #define VIRTIO_PARAM_MASK               0xff
  47 #define VIRTIO_PARAM_VRING_INTERRUPT    0x0
  48 #define VIRTIO_PARAM_CONFIG_CHANGED     0x1
  49 #define VIRTIO_PARAM_DEV_ADD            0x2
  50
  51 #define TYPE_VIRTIO_S390_DEVICE "virtio-s390-device"
  52 #define VIRTIO_S390_DEVICE(obj) \
  53      OBJECT_CHECK(VirtIOS390Device, (obj), TYPE_VIRTIO_S390_DEVICE)
  54 #define VIRTIO_S390_DEVICE_CLASS(klass) \
  55      OBJECT_CLASS_CHECK(VirtIOS390DeviceClass, (klass), TYPE_VIRTIO_S390_DEVICE)
  56 #define VIRTIO_S390_DEVICE_GET_CLASS(obj) \
  57      OBJECT_GET_CLASS(VirtIOS390DeviceClass, (obj), TYPE_VIRTIO_S390_DEVICE)
  58
  59 #define TYPE_S390_VIRTIO_BUS "s390-virtio-bus"
  60 #define S390_VIRTIO_BUS(obj) \
  61      OBJECT_CHECK(VirtIOS390Bus, (obj), TYPE_S390_VIRTIO_BUS)
  62
  63 /* virtio-s390-bus */
  64
  65 typedef struct VirtioBusState VirtioS390BusState;
  66 typedef struct VirtioBusClass VirtioS390BusClass;
  67
  68 #define TYPE_VIRTIO_S390_BUS "virtio-s390-bus"
  69 #define VIRTIO_S390_BUS(obj) \
  70         OBJECT_CHECK(VirtioS390BusState, (obj), TYPE_VIRTIO_S390_BUS)
  71 #define VIRTIO_S390_BUS_GET_CLASS(obj) \
  72         OBJECT_GET_CLASS(VirtioS390BusClass, obj, TYPE_VIRTIO_S390_BUS)
  73 #define VIRTIO_S390_BUS_CLASS(klass) \
  74         OBJECT_CLASS_CHECK(VirtioS390BusClass, klass, TYPE_VIRTIO_S390_BUS)
  75
  76
  77 typedef struct VirtIOS390Device VirtIOS390Device;
  78
  79 void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev);
  80
  81 typedef struct VirtIOS390DeviceClass {
  82     DeviceClass qdev;
  83     int (*init)(VirtIOS390Device *dev);
  84 } VirtIOS390DeviceClass;
  85
  86 struct VirtIOS390Device {
  87     DeviceState qdev;
  88     ram_addr_t dev_offs;
  89     ram_addr_t feat_offs;
  90     uint8_t feat_len;
  91     VirtIODevice *vdev;
  92     VirtIOBlkConf blk;
  93     NICConf nic;
  94     uint32_t host_features;
  95     virtio_serial_conf serial;
  96     virtio_net_conf net;
  97     VirtIOSCSIConf scsi;
  98     VirtIORNGConf rng;
  99 };
 100
 101 typedef struct VirtIOS390Bus {
 102     BusState bus;
 103
 104     VirtIOS390Device *console;
 105     ram_addr_t dev_page;
 106     ram_addr_t dev_offs;
 107     ram_addr_t next_ring;
 108 } VirtIOS390Bus;
 109
 110
 111 void s390_virtio_device_update_status(VirtIOS390Device *dev);
 112
 113 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus);
 114 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size);
 115
 116 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 117                                              ram_addr_t mem, int *vq_num);
 118 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem);
 119 void s390_virtio_device_sync(VirtIOS390Device *dev);
 120 void s390_virtio_reset_idx(VirtIOS390Device *dev);
 121
 122
 123 #endif