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/*

 * QEMU S390x VirtIO BUS definitions

 *

 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see <http://www.gnu.org/licenses/>.

 */

#ifndef HW_S390_VIRTIO_BUS_H

#define HW_S390_VIRTIO_BUS_H 1

#include "hw/virtio/virtio-blk.h"

#include "hw/virtio/virtio-net.h"

#include "hw/virtio/virtio-rng.h"

#include "hw/virtio/virtio-serial.h"

#include "hw/virtio/virtio-scsi.h"

#include "hw/virtio/virtio-bus.h"

#ifdef CONFIG_VHOST_SCSI

#include "hw/virtio/vhost-scsi.h"

#endif

#define VIRTIO_DEV_OFFS_TYPE                0        /* 8 bits */

#define VIRTIO_DEV_OFFS_NUM_VQ                1        /* 8 bits */

#define VIRTIO_DEV_OFFS_FEATURE_LEN        2        /* 8 bits */

#define VIRTIO_DEV_OFFS_CONFIG_LEN        3        /* 8 bits */

#define VIRTIO_DEV_OFFS_STATUS                4        /* 8 bits */

#define VIRTIO_DEV_OFFS_CONFIG                5        /* dynamic */

#define VIRTIO_VQCONFIG_OFFS_TOKEN        0        /* 64 bits */

#define VIRTIO_VQCONFIG_OFFS_ADDRESS        8        /* 64 bits */

#define VIRTIO_VQCONFIG_OFFS_NUM        16        /* 16 bits */

#define VIRTIO_VQCONFIG_LEN                24

#define VIRTIO_RING_LEN                        (TARGET_PAGE_SIZE * 3)

#define VIRTIO_VRING_AVAIL_IDX_OFFS 2

#define VIRTIO_VRING_USED_IDX_OFFS 2

#define S390_DEVICE_PAGES                512

#define VIRTIO_PARAM_MASK               0xff

#define VIRTIO_PARAM_VRING_INTERRUPT    0x0

#define VIRTIO_PARAM_CONFIG_CHANGED     0x1

#define VIRTIO_PARAM_DEV_ADD            0x2

#define TYPE_VIRTIO_S390_DEVICE "virtio-s390-device"

#define VIRTIO_S390_DEVICE(obj) \

     OBJECT_CHECK(VirtIOS390Device, (obj), TYPE_VIRTIO_S390_DEVICE)

#define VIRTIO_S390_DEVICE_CLASS(klass) \

     OBJECT_CLASS_CHECK(VirtIOS390DeviceClass, (klass), TYPE_VIRTIO_S390_DEVICE)

#define VIRTIO_S390_DEVICE_GET_CLASS(obj) \

     OBJECT_GET_CLASS(VirtIOS390DeviceClass, (obj), TYPE_VIRTIO_S390_DEVICE)

#define TYPE_S390_VIRTIO_BUS "s390-virtio-bus"

#define S390_VIRTIO_BUS(obj) \

     OBJECT_CHECK(VirtIOS390Bus, (obj), TYPE_S390_VIRTIO_BUS)

/* virtio-s390-bus */

typedef struct VirtioBusState VirtioS390BusState;

typedef struct VirtioBusClass VirtioS390BusClass;

#define TYPE_VIRTIO_S390_BUS "virtio-s390-bus"

#define VIRTIO_S390_BUS(obj) \

        OBJECT_CHECK(VirtioS390BusState, (obj), TYPE_VIRTIO_S390_BUS)

#define VIRTIO_S390_BUS_GET_CLASS(obj) \

        OBJECT_GET_CLASS(VirtioS390BusClass, obj, TYPE_VIRTIO_S390_BUS)

#define VIRTIO_S390_BUS_CLASS(klass) \

        OBJECT_CLASS_CHECK(VirtioS390BusClass, klass, TYPE_VIRTIO_S390_BUS)

typedef struct VirtIOS390Device VirtIOS390Device;

typedef struct VirtIOS390DeviceClass {

    DeviceClass qdev;

    int (*init)(VirtIOS390Device *dev);

} VirtIOS390DeviceClass;

struct VirtIOS390Device {

    DeviceState qdev;

    ram_addr_t dev_offs;

    ram_addr_t feat_offs;

    uint8_t feat_len;

    VirtIODevice *vdev;

    uint32_t host_features;

    VirtioBusState bus;

};

typedef struct VirtIOS390Bus {

    BusState bus;

    VirtIOS390Device *console;

    ram_addr_t dev_page;

    ram_addr_t dev_offs;

    ram_addr_t next_ring;

} VirtIOS390Bus;

void s390_virtio_device_update_status(VirtIOS390Device *dev);

VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus);

VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size);

VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,

                                             ram_addr_t mem, int *vq_num);

VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem);

void s390_virtio_device_sync(VirtIOS390Device *dev);

void s390_virtio_reset_idx(VirtIOS390Device *dev);

/* virtio-blk-s390 */

#define TYPE_VIRTIO_BLK_S390 "virtio-blk-s390"

#define VIRTIO_BLK_S390(obj) \

        OBJECT_CHECK(VirtIOBlkS390, (obj), TYPE_VIRTIO_BLK_S390)

typedef struct VirtIOBlkS390 {

    VirtIOS390Device parent_obj;

    VirtIOBlock vdev;

    VirtIOBlkConf blk;

} VirtIOBlkS390;

/* virtio-scsi-s390 */

#define TYPE_VIRTIO_SCSI_S390 "virtio-scsi-s390"

#define VIRTIO_SCSI_S390(obj) \

        OBJECT_CHECK(VirtIOSCSIS390, (obj), TYPE_VIRTIO_SCSI_S390)

typedef struct VirtIOSCSIS390 {

    VirtIOS390Device parent_obj;

    VirtIOSCSI vdev;

} VirtIOSCSIS390;

/* virtio-serial-s390 */

#define TYPE_VIRTIO_SERIAL_S390 "virtio-serial-s390"

#define VIRTIO_SERIAL_S390(obj) \

        OBJECT_CHECK(VirtIOSerialS390, (obj), TYPE_VIRTIO_SERIAL_S390)

typedef struct VirtIOSerialS390 {

    VirtIOS390Device parent_obj;

    VirtIOSerial vdev;

} VirtIOSerialS390;

/* virtio-net-s390 */

#define TYPE_VIRTIO_NET_S390 "virtio-net-s390"

#define VIRTIO_NET_S390(obj) \

        OBJECT_CHECK(VirtIONetS390, (obj), TYPE_VIRTIO_NET_S390)

typedef struct VirtIONetS390 {

    VirtIOS390Device parent_obj;

    VirtIONet vdev;

} VirtIONetS390;

/* vhost-scsi-s390 */

#ifdef CONFIG_VHOST_SCSI

#define TYPE_VHOST_SCSI_S390 "vhost-scsi-s390"

#define VHOST_SCSI_S390(obj) \

        OBJECT_CHECK(VHostSCSIS390, (obj), TYPE_VHOST_SCSI_S390)

typedef struct VHostSCSIS390 {

    VirtIOS390Device parent_obj;

    VHostSCSI vdev;

} VHostSCSIS390;

#endif

/* virtio-rng-s390 */

#define TYPE_VIRTIO_RNG_S390 "virtio-rng-s390"

#define VIRTIO_RNG_S390(obj) \

        OBJECT_CHECK(VirtIORNGS390, (obj), TYPE_VIRTIO_RNG_S390)

typedef struct VirtIORNGS390 {

    VirtIOS390Device parent_obj;

    VirtIORNG vdev;

} VirtIORNGS390;

#endif