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#ifndef QEMU_HW_XEN_PVDEV_H
#define QEMU_HW_XEN_PVDEV_H
#include "hw/sysbus.h"
#include "hw/xen/xen_backend_ops.h"
/* ------------------------------------------------------------- */
#define XEN_BUFSIZE 1024
struct XenLegacyDevice;
/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
#define DEVOPS_FLAG_NEED_GNTDEV 1
/* don't expect frontend doing correct state transitions (aka console quirk) */
#define DEVOPS_FLAG_IGNORE_STATE 2
struct XenDevOps {
size_t size;
uint32_t flags;
void (*alloc)(struct XenLegacyDevice *xendev);
int (*init)(struct XenLegacyDevice *xendev);
int (*initialise)(struct XenLegacyDevice *xendev);
void (*connected)(struct XenLegacyDevice *xendev);
void (*event)(struct XenLegacyDevice *xendev);
void (*disconnect)(struct XenLegacyDevice *xendev);
int (*free)(struct XenLegacyDevice *xendev);
void (*backend_changed)(struct XenLegacyDevice *xendev,
const char *node);
void (*frontend_changed)(struct XenLegacyDevice *xendev,
const char *node);
};
struct XenLegacyDevice {
SysBusDevice parent_obj;
const char *type;
int dom;
int dev;
char name[64];
int debug;
struct qemu_xs_watch *watch;
enum xenbus_state be_state;
enum xenbus_state fe_state;
int online;
char be[XEN_BUFSIZE];
char *fe;
char *protocol;
int remote_port;
int local_port;
xenevtchn_handle *evtchndev;
xengnttab_handle *gnttabdev;
const struct XenDevOps *ops;
QTAILQ_ENTRY(XenLegacyDevice) next;
};
/* ------------------------------------------------------------- */
/* xenstore helper functions */
int xenstore_write_str(const char *base, const char *node, const char *val);
int xenstore_write_int(const char *base, const char *node, int ival);
int xenstore_write_int64(const char *base, const char *node, int64_t ival);
char *xenstore_read_str(const char *base, const char *node);
int xenstore_read_int(const char *base, const char *node, int *ival);
int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
const char *xenbus_strstate(enum xenbus_state state);
void xen_pv_evtchn_event(void *opaque);
void xen_pv_insert_xendev(struct XenLegacyDevice *xendev);
void xen_pv_del_xendev(struct XenLegacyDevice *xendev);
struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev);
int xen_pv_send_notify(struct XenLegacyDevice *xendev);
void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
const char *fmt, ...) G_GNUC_PRINTF(3, 4);
#endif /* QEMU_HW_XEN_PVDEV_H */
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