LXR qemu/include/hw/xen/xen-legacy-backend.h

   1#ifndef HW_XEN_LEGACY_BACKEND_H
   2#define HW_XEN_LEGACY_BACKEND_H
   3
   4#include "hw/xen/xen_common.h"
   5#include "hw/xen/xen_pvdev.h"
   6#include "net/net.h"
   7#include "qom/object.h"
   8
   9#define TYPE_XENSYSDEV "xen-sysdev"
  10#define TYPE_XENSYSBUS "xen-sysbus"
  11#define TYPE_XENBACKEND "xen-backend"
  12
  13typedef struct XenLegacyDevice XenLegacyDevice;
  14DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND,
  15                         TYPE_XENBACKEND)
  16
  17/* variables */
  18extern struct xs_handle *xenstore;
  19extern const char *xen_protocol;
  20extern DeviceState *xen_sysdev;
  21extern BusState *xen_sysbus;
  22
  23int xenstore_mkdir(char *path, int p);
  24int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
  25                          const char *val);
  26int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
  27                          int ival);
  28int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
  29                            int64_t ival);
  30char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node);
  31int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
  32                         int *ival);
  33void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev);
  34void xenstore_update_be(char *watch, char *type, int dom,
  35                        struct XenDevOps *ops);
  36char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node);
  37int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
  38                         int *ival);
  39int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
  40                            uint64_t *uval);
  41
  42void xen_be_check_state(struct XenLegacyDevice *xendev);
  43
  44/* xen backend driver bits */
  45int xen_be_init(void);
  46void xen_be_register_common(void);
  47int xen_be_register(const char *type, struct XenDevOps *ops);
  48int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state);
  49int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
  50void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
  51                               unsigned int nr_refs);
  52void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
  53                            unsigned int nr_refs, int prot);
  54void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
  55                             unsigned int nr_refs);
  56
  57typedef struct XenGrantCopySegment {
  58    union {
  59        void *virt;
  60        struct {
  61            uint32_t ref;
  62            off_t offset;
  63        } foreign;
  64    } source, dest;
  65    size_t len;
  66} XenGrantCopySegment;
  67
  68int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
  69                           bool to_domain, XenGrantCopySegment segs[],
  70                           unsigned int nr_segs);
  71
  72static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev,
  73                                         uint32_t ref, int prot)
  74{
  75    return xen_be_map_grant_refs(xendev, &ref, 1, prot);
  76}
  77
  78static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev,
  79                                          void *ptr)
  80{
  81    return xen_be_unmap_grant_refs(xendev, ptr, 1);
  82}
  83
  84/* actual backend drivers */
  85extern struct XenDevOps xen_console_ops;      /* xen_console.c     */
  86extern struct XenDevOps xen_kbdmouse_ops;     /* xen_framebuffer.c */
  87extern struct XenDevOps xen_framebuffer_ops;  /* xen_framebuffer.c */
  88extern struct XenDevOps xen_blkdev_ops;       /* xen_disk.c        */
  89#ifdef CONFIG_VIRTFS
  90extern struct XenDevOps xen_9pfs_ops;       /* xen-9p-backend.c        */
  91#endif
  92extern struct XenDevOps xen_netdev_ops;       /* xen_nic.c         */
  93#ifdef CONFIG_USB_LIBUSB
  94extern struct XenDevOps xen_usb_ops;          /* xen-usb.c         */
  95#endif
  96
  97/* configuration (aka xenbus setup) */
  98void xen_config_cleanup(void);
  99int xen_config_dev_blk(DriveInfo *disk);
 100int xen_config_dev_nic(NICInfo *nic);
 101int xen_config_dev_vfb(int vdev, const char *type);
 102int xen_config_dev_vkbd(int vdev);
 103int xen_config_dev_console(int vdev);
 104
 105#endif /* HW_XEN_LEGACY_BACKEND_H */
 106