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 XenLegacyDevice;
  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 XenLegacyDevice *xendev);
  20    int       (*init)(struct XenLegacyDevice *xendev);
  21    int       (*initialise)(struct XenLegacyDevice *xendev);
  22    void      (*connected)(struct XenLegacyDevice *xendev);
  23    void      (*event)(struct XenLegacyDevice *xendev);
  24    void      (*disconnect)(struct XenLegacyDevice *xendev);
  25    int       (*free)(struct XenLegacyDevice *xendev);
  26    void      (*backend_changed)(struct XenLegacyDevice *xendev,
  27                                 const char *node);
  28    void      (*frontend_changed)(struct XenLegacyDevice *xendev,
  29                                  const char *node);
  30    int       (*backend_register)(void);
  31};
  32
  33struct XenLegacyDevice {
  34    DeviceState        qdev;
  35    const char         *type;
  36    int                dom;
  37    int                dev;
  38    char               name[64];
  39    int                debug;
  40
  41    enum xenbus_state  be_state;
  42    enum xenbus_state  fe_state;
  43    int                online;
  44    char               be[XEN_BUFSIZE];
  45    char               *fe;
  46    char               *protocol;
  47    int                remote_port;
  48    int                local_port;
  49
  50    xenevtchn_handle   *evtchndev;
  51    xengnttab_handle   *gnttabdev;
  52
  53    struct XenDevOps   *ops;
  54    QTAILQ_ENTRY(XenLegacyDevice) next;
  55};
  56
  57/* ------------------------------------------------------------- */
  58
  59/* xenstore helper functions */
  60int xenstore_write_str(const char *base, const char *node, const char *val);
  61int xenstore_write_int(const char *base, const char *node, int ival);
  62int xenstore_write_int64(const char *base, const char *node, int64_t ival);
  63char *xenstore_read_str(const char *base, const char *node);
  64int xenstore_read_int(const char *base, const char *node, int *ival);
  65int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
  66void xenstore_update(void *unused);
  67
  68const char *xenbus_strstate(enum xenbus_state state);
  69
  70void xen_pv_evtchn_event(void *opaque);
  71void xen_pv_insert_xendev(struct XenLegacyDevice *xendev);
  72void xen_pv_del_xendev(struct XenLegacyDevice *xendev);
  73struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
  74
  75void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev);
  76int xen_pv_send_notify(struct XenLegacyDevice *xendev);
  77
  78void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
  79                   const char *fmt, ...)  GCC_FMT_ATTR(3, 4);
  80
  81#endif /* QEMU_HW_XEN_PVDEV_H */
  82