LXR qemu/include/hw/xen/xen

   1#ifndef QEMU_HW_XEN_PVDEV_H
   2#define QEMU_HW_XEN_PVDEV_H
   3
   4#include "hw/xen/xen_common.h"
   5/* ------------------------------------------------------------- */
   6
   7#define XEN_BUFSIZE 1024
   8
   9struct XenDevice;
  10
  11/* driver uses grant tables  ->  open gntdev device (xendev->gnttabdev) */
  12#define DEVOPS_FLAG_NEED_GNTDEV   1
  13/* don't expect frontend doing correct state transitions (aka console quirk) */
  14#define DEVOPS_FLAG_IGNORE_STATE  2
  15
  16struct XenDevOps {
  17    size_t    size;
  18    uint32_t  flags;
  19    void      (*alloc)(struct XenDevice *xendev);
  20    int       (*init)(struct XenDevice *xendev);
  21    int       (*initialise)(struct XenDevice *xendev);
  22    void      (*connected)(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    int       (*backend_register)(void);
  29};
  30
  31struct XenDevice {
  32    DeviceState        qdev;
  33    const char         *type;
  34    int                dom;
  35    int                dev;
  36    char               name[64];
  37    int                debug;
  38
  39    enum xenbus_state  be_state;
  40    enum xenbus_state  fe_state;
  41    int                online;
  42    char               be[XEN_BUFSIZE];
  43    char               *fe;
  44    char               *protocol;
  45    int                remote_port;
  46    int                local_port;
  47
  48    xenevtchn_handle   *evtchndev;
  49    xengnttab_handle   *gnttabdev;
  50
  51    struct XenDevOps   *ops;
  52    QTAILQ_ENTRY(XenDevice) next;
  53};
  54
  55/* ------------------------------------------------------------- */
  56
  57/* xenstore helper functions */
  58int xenstore_write_str(const char *base, const char *node, const char *val);
  59int xenstore_write_int(const char *base, const char *node, int ival);
  60int xenstore_write_int64(const char *base, const char *node, int64_t ival);
  61char *xenstore_read_str(const char *base, const char *node);
  62int xenstore_read_int(const char *base, const char *node, int *ival);
  63int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
  64void xenstore_update(void *unused);
  65
  66const char *xenbus_strstate(enum xenbus_state state);
  67
  68void xen_pv_evtchn_event(void *opaque);
  69void xen_pv_insert_xendev(struct XenDevice *xendev);
  70void xen_pv_del_xendev(struct XenDevice *xendev);
  71struct XenDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
  72
  73void xen_pv_unbind_evtchn(struct XenDevice *xendev);
  74int xen_pv_send_notify(struct XenDevice *xendev);
  75
  76void xen_pv_printf(struct XenDevice *xendev, int msg_level,
  77                   const char *fmt, ...)  GCC_FMT_ATTR(3, 4);
  78
  79#endif /* QEMU_HW_XEN_PVDEV_H */
  80