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1 #ifndef HW_XEN_LEGACY_BACKEND_H
2 #define HW_XEN_LEGACY_BACKEND_H
3
4 #include "hw/xen/xen_backend_ops.h"
5 #include "hw/xen/xen_pvdev.h"
6 #include "qom/object.h"
7
8 #define TYPE_XENSYSDEV "xen-sysdev"
9 #define TYPE_XENSYSBUS "xen-sysbus"
10 #define TYPE_XENBACKEND "xen-backend"
11
12 typedef struct XenLegacyDevice XenLegacyDevice;
13 DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND,
14 TYPE_XENBACKEND)
15
16 /* variables */
17 extern struct qemu_xs_handle *xenstore;
18 extern const char *xen_protocol;
19 extern DeviceState *xen_sysdev;
20 extern BusState *xen_sysbus;
21
22 int xenstore_mkdir(char *path, int p);
23 int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
24 const char *val);
25 int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
26 int ival);
27 int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
28 int64_t ival);
29 char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node);
30 int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
31 int *ival);
32 char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node);
33 int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
34 int *ival);
35 int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
36 uint64_t *uval);
37
38 void xen_be_check_state(struct XenLegacyDevice *xendev);
39
40 /* xen backend driver bits */
41 void xen_be_init(void);
42 int xen_be_register(const char *type, const struct XenDevOps *ops);
43 int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state);
44 int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
45 void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
46 unsigned int nr_refs);
47 void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
48 unsigned int nr_refs, int prot);
49 void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
50 uint32_t *refs, unsigned int nr_refs);
51
52 static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev,
53 uint32_t ref, int prot)
54 {
55 return xen_be_map_grant_refs(xendev, &ref, 1, prot);
56 }
57
58 static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev,
59 void *ptr, uint32_t ref)
60 {
61 return xen_be_unmap_grant_refs(xendev, ptr, &ref, 1);
62 }
63
64 /* configuration (aka xenbus setup) */
65 void xen_config_cleanup(void);
66 int xen_config_dev_vfb(int vdev, const char *type);
67 int xen_config_dev_vkbd(int vdev);
68
69 #endif /* HW_XEN_LEGACY_BACKEND_H */