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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 "virtio-blk.h"

#include "virtio-net.h"

#include "virtio-rng.h"

#include "virtio-serial.h"

#include "virtio-scsi.h"

#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)

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;

    VirtIOBlkConf blk;

    NICConf nic;

    uint32_t host_features;

    virtio_serial_conf serial;

    virtio_net_conf net;

    VirtIOSCSIConf scsi;

    VirtIORNGConf rng;

};

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);

#endif