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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 #define VIRTIO_DEV_OFFS_TYPE 0 /* 8 bits */
21 #define VIRTIO_DEV_OFFS_NUM_VQ 1 /* 8 bits */
22 #define VIRTIO_DEV_OFFS_FEATURE_LEN 2 /* 8 bits */
23 #define VIRTIO_DEV_OFFS_CONFIG_LEN 3 /* 8 bits */
24 #define VIRTIO_DEV_OFFS_STATUS 4 /* 8 bits */
25 #define VIRTIO_DEV_OFFS_CONFIG 5 /* dynamic */
26
27 #define VIRTIO_VQCONFIG_OFFS_TOKEN 0 /* 64 bits */
28 #define VIRTIO_VQCONFIG_OFFS_ADDRESS 8 /* 64 bits */
29 #define VIRTIO_VQCONFIG_OFFS_NUM 16 /* 16 bits */
30 #define VIRTIO_VQCONFIG_LEN 24
31
32 #define VIRTIO_RING_LEN (TARGET_PAGE_SIZE * 3)
33 #define S390_DEVICE_PAGES 256
34
35 typedef struct VirtIOS390Device {
36 DeviceState qdev;
37 ram_addr_t dev_offs;
38 ram_addr_t feat_offs;
39 uint8_t feat_len;
40 VirtIODevice *vdev;
41 BlockConf block;
42 NICConf nic;
43 uint32_t host_features;
44 /* Max. number of ports we can have for a the virtio-serial device */
45 uint32_t max_virtserial_ports;
46 virtio_net_conf net;
47 } VirtIOS390Device;
48
49 typedef struct VirtIOS390Bus {
50 BusState bus;
51
52 VirtIOS390Device *console;
53 ram_addr_t dev_page;
54 ram_addr_t dev_offs;
55 ram_addr_t next_ring;
56 } VirtIOS390Bus;
57
58
59 extern void s390_virtio_device_update_status(VirtIOS390Device *dev);
60
61 extern VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus);
62 extern VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size);
63
64 extern VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
65 ram_addr_t mem,
66 int *vq_num);
67 extern VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus,
68 ram_addr_t mem);
69 extern void s390_virtio_device_sync(VirtIOS390Device *dev);