Merge remote-tracking branch 'remotes/kraxel/tags/seabios-20211022-pull-request'...
[qemu.git] / include / hw / xen / xen-legacy-backend.h
1 #ifndef HW_XEN_LEGACY_BACKEND_H
2 #define HW_XEN_LEGACY_BACKEND_H
3
4 #include "hw/xen/xen_common.h"
5 #include "hw/xen/xen_pvdev.h"
6 #include "net/net.h"
7 #include "qom/object.h"
8
9 #define TYPE_XENSYSDEV "xen-sysdev"
10 #define TYPE_XENSYSBUS "xen-sysbus"
11 #define TYPE_XENBACKEND "xen-backend"
12
13 typedef struct XenLegacyDevice XenLegacyDevice;
14 DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND,
15 TYPE_XENBACKEND)
16
17 /* variables */
18 extern struct xs_handle *xenstore;
19 extern const char *xen_protocol;
20 extern DeviceState *xen_sysdev;
21 extern BusState *xen_sysbus;
22
23 int xenstore_mkdir(char *path, int p);
24 int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
25 const char *val);
26 int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
27 int ival);
28 int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
29 int64_t ival);
30 char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node);
31 int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
32 int *ival);
33 void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev);
34 void xenstore_update_be(char *watch, char *type, int dom,
35 struct XenDevOps *ops);
36 char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node);
37 int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
38 int *ival);
39 int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
40 uint64_t *uval);
41
42 void xen_be_check_state(struct XenLegacyDevice *xendev);
43
44 /* xen backend driver bits */
45 int xen_be_init(void);
46 void xen_be_register_common(void);
47 int xen_be_register(const char *type, struct XenDevOps *ops);
48 int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state);
49 int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
50 void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
51 unsigned int nr_refs);
52 void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
53 unsigned int nr_refs, int prot);
54 void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
55 unsigned int nr_refs);
56
57 typedef struct XenGrantCopySegment {
58 union {
59 void *virt;
60 struct {
61 uint32_t ref;
62 off_t offset;
63 } foreign;
64 } source, dest;
65 size_t len;
66 } XenGrantCopySegment;
67
68 int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
69 bool to_domain, XenGrantCopySegment segs[],
70 unsigned int nr_segs);
71
72 static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev,
73 uint32_t ref, int prot)
74 {
75 return xen_be_map_grant_refs(xendev, &ref, 1, prot);
76 }
77
78 static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev,
79 void *ptr)
80 {
81 return xen_be_unmap_grant_refs(xendev, ptr, 1);
82 }
83
84 /* actual backend drivers */
85 extern struct XenDevOps xen_console_ops; /* xen_console.c */
86 extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
87 extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
88 extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
89 #ifdef CONFIG_VIRTFS
90 extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */
91 #endif
92 extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
93 #ifdef CONFIG_USB_LIBUSB
94 extern struct XenDevOps xen_usb_ops; /* xen-usb.c */
95 #endif
96
97 /* configuration (aka xenbus setup) */
98 void xen_config_cleanup(void);
99 int xen_config_dev_blk(DriveInfo *disk);
100 int xen_config_dev_nic(NICInfo *nic);
101 int xen_config_dev_vfb(int vdev, const char *type);
102 int xen_config_dev_vkbd(int vdev);
103 int xen_config_dev_console(int vdev);
104
105 #endif /* HW_XEN_LEGACY_BACKEND_H */