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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/>.
*/
#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 S390_DEVICE_PAGES 256
typedef struct VirtIOS390Device {
DeviceState qdev;
ram_addr_t dev_offs;
ram_addr_t feat_offs;
uint8_t feat_len;
VirtIODevice *vdev;
BlockConf block;
NICConf nic;
uint32_t host_features;
/* Max. number of ports we can have for a the virtio-serial device */
uint32_t max_virtserial_ports;
} VirtIOS390Device;
typedef struct VirtIOS390Bus {
BusState bus;
VirtIOS390Device *console;
ram_addr_t dev_page;
ram_addr_t dev_offs;
ram_addr_t next_ring;
} VirtIOS390Bus;
extern void s390_virtio_device_update_status(VirtIOS390Device *dev);
extern VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus);
extern VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size);
extern VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
ram_addr_t mem,
int *vq_num);
extern VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus,
ram_addr_t mem);
extern void s390_virtio_device_sync(VirtIOS390Device *dev);
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