projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| d94f9486 AL |
1 | #ifndef QEMU_HW_XEN_BACKEND_H |
| 2 | #define QEMU_HW_XEN_BACKEND_H 1 | |
| 3 | ||
| 4 | #include "xen_common.h" | |
| 5 | ||
| 6 | /* ------------------------------------------------------------- */ | |
| 7 | ||
| 8 | #define XEN_BUFSIZE 1024 | |
| 9 | ||
| 10 | struct XenDevice; | |
| 11 | ||
| 12 | /* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */ | |
| 13 | #define DEVOPS_FLAG_NEED_GNTDEV 1 | |
| 14 | /* don't expect frontend doing correct state transitions (aka console quirk) */ | |
| 15 | #define DEVOPS_FLAG_IGNORE_STATE 2 | |
| 16 | ||
| 17 | struct XenDevOps { | |
| 18 | size_t size; | |
| 19 | uint32_t flags; | |
| 20 | void (*alloc)(struct XenDevice *xendev); | |
| 21 | int (*init)(struct XenDevice *xendev); | |
| 22 | int (*connect)(struct XenDevice *xendev); | |
| 23 | void (*event)(struct XenDevice *xendev); | |
| 24 | void (*disconnect)(struct XenDevice *xendev); | |
| 25 | int (*free)(struct XenDevice *xendev); | |
| 26 | void (*backend_changed)(struct XenDevice *xendev, const char *node); | |
| 27 | void (*frontend_changed)(struct XenDevice *xendev, const char *node); | |
| 28 | }; | |
| 29 | ||
| 30 | struct XenDevice { | |
| 31 | const char *type; | |
| 32 | int dom; | |
| 33 | int dev; | |
| 34 | char name[64]; | |
| 35 | int debug; | |
| 36 | ||
| 37 | enum xenbus_state be_state; | |
| 38 | enum xenbus_state fe_state; | |
| 39 | int online; | |
| 40 | char be[XEN_BUFSIZE]; | |
| 41 | char *fe; | |
| 42 | char *protocol; | |
| 43 | int remote_port; | |
| 44 | int local_port; | |
| 45 | ||
| 46 | int evtchndev; | |
| 47 | int gnttabdev; | |
| 48 | ||
| 49 | struct XenDevOps *ops; | |
| 50 | TAILQ_ENTRY(XenDevice) next; | |
| 51 | }; | |
| 52 | ||
| 53 | /* ------------------------------------------------------------- */ | |
| 54 | ||
| 55 | /* variables */ | |
| 56 | extern int xen_xc; | |
| 57 | extern struct xs_handle *xenstore; | |
| 58 | ||
| 59 | /* xenstore helper functions */ | |
| 60 | int xenstore_write_str(const char *base, const char *node, const char *val); | |
| 61 | int xenstore_write_int(const char *base, const char *node, int ival); | |
| 62 | char *xenstore_read_str(const char *base, const char *node); | |
| 63 | int xenstore_read_int(const char *base, const char *node, int *ival); | |
| 64 | ||
| 65 | int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val); | |
| 66 | int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival); | |
| 67 | char *xenstore_read_be_str(struct XenDevice *xendev, const char *node); | |
| 68 | int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival); | |
| 69 | char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node); | |
| 70 | int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival); | |
| 71 | ||
| 72 | const char *xenbus_strstate(enum xenbus_state state); | |
| 73 | struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev); | |
| 74 | void xen_be_check_state(struct XenDevice *xendev); | |
| 75 | ||
| 76 | /* xen backend driver bits */ | |
| 77 | int xen_be_init(void); | |
| 78 | int xen_be_register(const char *type, struct XenDevOps *ops); | |
| 79 | int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state); | |
| 80 | int xen_be_bind_evtchn(struct XenDevice *xendev); | |
| 81 | void xen_be_unbind_evtchn(struct XenDevice *xendev); | |
| 82 | int xen_be_send_notify(struct XenDevice *xendev); | |
| 83 | void xen_be_printf(struct XenDevice *xendev, int msg_level, const char *fmt, ...) | |
| 84 | __attribute__ ((format(printf, 3, 4))); | |
| 85 | ||
| 86 | #endif /* QEMU_HW_XEN_BACKEND_H */ |