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