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
  20 #include "virtio-net.h"
  21 #include "virtio-serial.h"
  22 #include "virtio-scsi.h"
  23
  24 #define VIRTIO_DEV_OFFS_TYPE            0       /* 8 bits */
  25 #define VIRTIO_DEV_OFFS_NUM_VQ          1       /* 8 bits */
  26 #define VIRTIO_DEV_OFFS_FEATURE_LEN     2       /* 8 bits */
  27 #define VIRTIO_DEV_OFFS_CONFIG_LEN      3       /* 8 bits */
  28 #define VIRTIO_DEV_OFFS_STATUS          4       /* 8 bits */
  29 #define VIRTIO_DEV_OFFS_CONFIG          5       /* dynamic */
  30
  31 #define VIRTIO_VQCONFIG_OFFS_TOKEN      0       /* 64 bits */
  32 #define VIRTIO_VQCONFIG_OFFS_ADDRESS    8       /* 64 bits */
  33 #define VIRTIO_VQCONFIG_OFFS_NUM        16      /* 16 bits */
  34 #define VIRTIO_VQCONFIG_LEN             24
  35
  36 #define VIRTIO_RING_LEN                 (TARGET_PAGE_SIZE * 3)
  37 #define VIRTIO_VRING_AVAIL_IDX_OFFS 2
  38 #define VIRTIO_VRING_USED_IDX_OFFS 2
  39 #define S390_DEVICE_PAGES               512
  40
  41 #define VIRTIO_PARAM_MASK               0xff
  42 #define VIRTIO_PARAM_VRING_INTERRUPT    0x0
  43 #define VIRTIO_PARAM_CONFIG_CHANGED     0x1
  44 #define VIRTIO_PARAM_DEV_ADD            0x2
  45
  46 #define TYPE_VIRTIO_S390_DEVICE "virtio-s390-device"
  47 #define VIRTIO_S390_DEVICE(obj) \
  48      OBJECT_CHECK(VirtIOS390Device, (obj), TYPE_VIRTIO_S390_DEVICE)
  49 #define VIRTIO_S390_DEVICE_CLASS(klass) \
  50      OBJECT_CLASS_CHECK(VirtIOS390DeviceClass, (klass), TYPE_VIRTIO_S390_DEVICE)
  51 #define VIRTIO_S390_DEVICE_GET_CLASS(obj) \
  52      OBJECT_GET_CLASS(VirtIOS390DeviceClass, (obj), TYPE_VIRTIO_S390_DEVICE)
  53
  54 typedef struct VirtIOS390Device VirtIOS390Device;
  55
  56 typedef struct VirtIOS390DeviceClass {
  57     DeviceClass qdev;
  58     int (*init)(VirtIOS390Device *dev);
  59 } VirtIOS390DeviceClass;
  60
  61 struct VirtIOS390Device {
  62     DeviceState qdev;
  63     ram_addr_t dev_offs;
  64     ram_addr_t feat_offs;
  65     uint8_t feat_len;
  66     VirtIODevice *vdev;
  67     BlockConf block;
  68     char *block_serial;
  69     NICConf nic;
  70     uint32_t host_features;
  71     virtio_serial_conf serial;
  72     virtio_net_conf net;
  73     VirtIOSCSIConf scsi;
  74 };
  75
  76 typedef struct VirtIOS390Bus {
  77     BusState bus;
  78
  79     VirtIOS390Device *console;
  80     ram_addr_t dev_page;
  81     ram_addr_t dev_offs;
  82     ram_addr_t next_ring;
  83 } VirtIOS390Bus;
  84
  85
  86 void s390_virtio_device_update_status(VirtIOS390Device *dev);
  87
  88 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus);
  89 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size);
  90
  91 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
  92                                              ram_addr_t mem, int *vq_num);
  93 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem);
  94 void s390_virtio_device_sync(VirtIOS390Device *dev);
  95 void s390_virtio_reset_idx(VirtIOS390Device *dev);
  96