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 13 typedef struct XenLegacyDevice XenLegacyDevice; 14 DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND, 15 TYPE_XENBACKEND) 16 17 /* variables */ 18 extern struct 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 void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev); 34 void xenstore_update_be(char *watch, char *type, int dom, 35 struct XenDevOps *ops); 36 char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node); 37 int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node, 38 int *ival); 39 int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node, 40 uint64_t *uval); 41 42 void xen_be_check_state(struct XenLegacyDevice *xendev); 43 44 /* xen backend driver bits */ 45 int xen_be_init(void); 46 void xen_be_register_common(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 typedef 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 68 int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev, 69 bool to_domain, XenGrantCopySegment segs[], 70 unsigned int nr_segs); 71 72 static 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 78 static 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 */ 85 extern struct XenDevOps xen_console_ops; /* xen_console.c */ 86 extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */ 87 extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */ 88 extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */ 89 #ifdef CONFIG_VIRTFS 90 extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */ 91 #endif 92 extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */ 93 #ifdef CONFIG_USB_LIBUSB 94 extern struct XenDevOps xen_usb_ops; /* xen-usb.c */ 95 #endif 96 97 /* configuration (aka xenbus setup) */ 98 void xen_config_cleanup(void); 99 int xen_config_dev_blk(DriveInfo *disk); 100 int xen_config_dev_nic(NICInfo *nic); 101 int xen_config_dev_vfb(int vdev, const char *type); 102 int xen_config_dev_vkbd(int vdev); 103 int xen_config_dev_console(int vdev); 104 105 #endif /* HW_XEN_LEGACY_BACKEND_H */ 106