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