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 */ 17 extern struct xs_handle *xenstore; 18 extern const char *xen_protocol; 19 extern DeviceState *xen_sysdev; 20 extern BusState *xen_sysbus; 21 22 int xenstore_mkdir(char *path, int p); 23 int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val); 24 int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival); 25 int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t ival); 26 char *xenstore_read_be_str(struct XenDevice *xendev, const char *node); 27 int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival); 28 void xenstore_update_fe(char *watch, struct XenDevice *xendev); 29 void xenstore_update_be(char *watch, char *type, int dom, 30 struct XenDevOps *ops); 31 char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node); 32 int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival); 33 int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node, 34 uint64_t *uval); 35 36 void xen_be_check_state(struct XenDevice *xendev); 37 38 /* xen backend driver bits */ 39 int xen_be_init(void); 40 void xen_be_register_common(void); 41 int xen_be_register(const char *type, struct XenDevOps *ops); 42 int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state); 43 int xen_be_bind_evtchn(struct XenDevice *xendev); 44 void xen_be_set_max_grant_refs(struct XenDevice *xendev, 45 unsigned int nr_refs); 46 void *xen_be_map_grant_refs(struct XenDevice *xendev, uint32_t *refs, 47 unsigned int nr_refs, int prot); 48 void xen_be_unmap_grant_refs(struct XenDevice *xendev, void *ptr, 49 unsigned int nr_refs); 50 51 typedef 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 62 int xen_be_copy_grant_refs(struct XenDevice *xendev, 63 bool to_domain, XenGrantCopySegment segs[], 64 unsigned int nr_segs); 65 66 static 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 72 static 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 */ 79 extern struct XenDevOps xen_console_ops; /* xen_console.c */ 80 extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */ 81 extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */ 82 extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */ 83 #ifdef CONFIG_VIRTFS 84 extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */ 85 #endif 86 extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */ 87 #ifdef CONFIG_USB_LIBUSB 88 extern struct XenDevOps xen_usb_ops; /* xen-usb.c */ 89 #endif 90 91 /* configuration (aka xenbus setup) */ 92 void xen_config_cleanup(void); 93 int xen_config_dev_blk(DriveInfo *disk); 94 int xen_config_dev_nic(NICInfo *nic); 95 int xen_config_dev_vfb(int vdev, const char *type); 96 int xen_config_dev_vkbd(int vdev); 97 int xen_config_dev_console(int vdev); 98 99 #endif /* QEMU_HW_XEN_BACKEND_H */ 100