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