LXR qemu/include/hw/xen/xen

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