79     struct usbback_info      *usbif;  member
120 static struct usbback_req *usbback_get_req(struct usbback_info *usbif)  in usbback_get_req()  argument
124     if (QTAILQ_EMPTY(&usbif->req_free_q)) {  in usbback_get_req()
127         usbback_req = QTAILQ_FIRST(&usbif->req_free_q);  in usbback_get_req()
128         QTAILQ_REMOVE(&usbif->req_free_q, usbback_req, q);  in usbback_get_req()
135     struct usbback_info *usbif;  in usbback_put_req()  local
137     usbif = usbback_req->usbif;  in usbback_put_req()
139     QTAILQ_INSERT_HEAD(&usbif->req_free_q, usbback_req, q);  in usbback_put_req()
146     struct usbback_info *usbif = usbback_req->usbif;  in usbback_gnttab_map()  local
147     struct XenLegacyDevice *xendev = &usbif->xendev;  in usbback_gnttab_map()
225     struct XenLegacyDevice *xendev = &usbback_req->usbif->xendev;  in usbback_init_packet()
283     struct usbback_info *usbif;  in usbback_do_response()  local
288     usbif = usbback_req->usbif;  in usbback_do_response()
289     xendev = &usbif->xendev;  in usbback_do_response()
316     if (usbif->urb_sring) {  in usbback_do_response()
317         res = RING_GET_RESPONSE(&usbif->urb_ring, usbif->urb_ring.rsp_prod_pvt);  in usbback_do_response()
323         usbif->urb_ring.rsp_prod_pvt++;  in usbback_do_response()
324         RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&usbif->urb_ring, notify);  in usbback_do_response()
370 static void usbback_set_address(struct usbback_info *usbif,  in usbback_set_address()  argument
375         usbif->addr_table[cur_addr] = NULL;  in usbback_set_address()
378         usbif->addr_table[new_addr] = stub;  in usbback_set_address()
394     struct usbback_info *usbif;  in usbback_process_unlink_req()  local
399     usbif = usbback_req->usbif;  in usbback_process_unlink_req()
402     TR_REQ(&usbif->xendev, "unlink id %d\n", id);  in usbback_process_unlink_req()
405         usbback_req->stub = usbif->ports +  in usbback_process_unlink_req()
412         if (unlikely(!usbif->addr_table[devnum])) {  in usbback_process_unlink_req()
416         usbback_req->stub = usbif->addr_table[devnum];  in usbback_process_unlink_req()
440     struct usbback_info *usbif;  in usbback_check_and_submit()  local
447     usbif = usbback_req->usbif;  in usbback_check_and_submit()
467         stub = usbif->ports + usbif_pipeportnum(usbback_req->req.pipe) - 1;  in usbback_check_and_submit()
479             TR_REQ(&usbif->xendev, "devnum 0 GET_DESCRIPTOR\n");  in usbback_check_and_submit()
487             TR_REQ(&usbif->xendev, "devnum 0 SET_ADDRESS\n");  in usbback_check_and_submit()
488             usbback_set_address(usbif, stub, 0, wValue);  in usbback_check_and_submit()
498     if (unlikely(!usbif->addr_table[devnum])) {  in usbback_check_and_submit()
502     usbback_req->stub = usbif->addr_table[devnum];  in usbback_check_and_submit()
515     usbback_set_address(usbif, usbback_req->stub, devnum, wValue);  in usbback_check_and_submit()
527     struct usbback_info *usbif;  in usbback_dispatch()  local
529     usbif = usbback_req->usbif;  in usbback_dispatch()
531     TR_REQ(&usbif->xendev, "start req_id %d pipe %08x\n", usbback_req->req.id,  in usbback_dispatch()
546         usbback_req->stub = usbif->addr_table[devnum];  in usbback_dispatch()
562         xen_pv_printf(&usbif->xendev, 0, "invalid request\n");  in usbback_dispatch()
569         xen_pv_printf(&usbif->xendev, 0, "invalid buffer, ret=%d\n", ret);  in usbback_dispatch()
587 static void usbback_hotplug_notify(struct usbback_info *usbif)  in usbback_hotplug_notify()  argument
589     struct usbif_conn_back_ring *ring = &usbif->conn_ring;  in usbback_hotplug_notify()
595     if (!usbif->conn_sring) {  in usbback_hotplug_notify()
601         xen_pv_send_notify(&usbif->xendev);  in usbback_hotplug_notify()
605     usb_hp = QSIMPLEQ_FIRST(&usbif->hotplug_q);  in usbback_hotplug_notify()
606     QSIMPLEQ_REMOVE_HEAD(&usbif->hotplug_q, q);  in usbback_hotplug_notify()
615     res->speed = usbif->ports[usb_hp->port - 1].speed;  in usbback_hotplug_notify()
620         xen_pv_send_notify(&usbif->xendev);  in usbback_hotplug_notify()
623     TR_BUS(&usbif->xendev, "hotplug port %d speed %d\n", usb_hp->port,  in usbback_hotplug_notify()
628     if (!QSIMPLEQ_EMPTY(&usbif->hotplug_q)) {  in usbback_hotplug_notify()
629         qemu_bh_schedule(usbif->bh);  in usbback_hotplug_notify()
635     struct usbback_info *usbif;  in usbback_bh()  local
641     usbif = opaque;  in usbback_bh()
642     if (usbif->ring_error) {  in usbback_bh()
646     if (!QSIMPLEQ_EMPTY(&usbif->hotplug_q)) {  in usbback_bh()
647         usbback_hotplug_notify(usbif);  in usbback_bh()
650     urb_ring = &usbif->urb_ring;  in usbback_bh()
657         xen_pv_printf(&usbif->xendev, 0, "domU provided bogus ring requests "  in usbback_bh()
660         usbif->ring_error = true;  in usbback_bh()
668         usbback_req = usbback_get_req(usbif);  in usbback_bh()
671         usbback_req->usbif = usbif;  in usbback_bh()
680         qemu_bh_schedule(usbif->bh);  in usbback_bh()
684 static void usbback_hotplug_enq(struct usbback_info *usbif, unsigned port)  in usbback_hotplug_enq()  argument
690     QSIMPLEQ_INSERT_TAIL(&usbif->hotplug_q, usb_hp, q);  in usbback_hotplug_enq()
691     usbback_hotplug_notify(usbif);  in usbback_hotplug_enq()
694 static void usbback_portid_drain(struct usbback_info *usbif, unsigned port)  in usbback_portid_drain()  argument
699     QTAILQ_FOREACH_SAFE(req, &usbif->ports[port - 1].submit_q, q, tmp) {  in usbback_portid_drain()
705         qemu_bh_schedule(usbif->bh);  in usbback_portid_drain()
709 static void usbback_portid_detach(struct usbback_info *usbif, unsigned port)  in usbback_portid_detach()  argument
711     if (!usbif->ports[port - 1].attached) {  in usbback_portid_detach()
715     usbif->ports[port - 1].speed = USBIF_SPEED_NONE;  in usbback_portid_detach()
716     usbif->ports[port - 1].attached = false;  in usbback_portid_detach()
717     usbback_portid_drain(usbif, port);  in usbback_portid_detach()
718     usbback_hotplug_enq(usbif, port);  in usbback_portid_detach()
721 static void usbback_portid_remove(struct usbback_info *usbif, unsigned port)  in usbback_portid_remove()  argument
723     if (!usbif->ports[port - 1].dev) {  in usbback_portid_remove()
727     object_unparent(OBJECT(usbif->ports[port - 1].dev));  in usbback_portid_remove()
728     usbif->ports[port - 1].dev = NULL;  in usbback_portid_remove()
729     usbback_portid_detach(usbif, port);  in usbback_portid_remove()
731     TR_BUS(&usbif->xendev, "port %d removed\n", port);  in usbback_portid_remove()
734 static void usbback_portid_add(struct usbback_info *usbif, unsigned port,  in usbback_portid_add()  argument
744     if (usbif->ports[port - 1].dev) {  in usbback_portid_add()
750         xen_pv_printf(&usbif->xendev, 0, "device %s illegal specification\n",  in usbback_portid_add()
758     tmp = g_strdup_printf("%s.0", usbif->xendev.qdev.id);  in usbback_portid_add()
761     tmp = g_strdup_printf("%s-%u", usbif->xendev.qdev.id, port);  in usbback_portid_add()
769     usbif->ports[port - 1].dev = USB_DEVICE(qdev_device_add(opts, &local_err));  in usbback_portid_add()
770     if (!usbif->ports[port - 1].dev) {  in usbback_portid_add()
772         xen_pv_printf(&usbif->xendev, 0,  in usbback_portid_add()
779     speed = usbif->ports[port - 1].dev->speed;  in usbback_portid_add()
788         speed = (usbif->usb_ver < USB_VER_USB20) ?  in usbback_portid_add()
796         xen_pv_printf(&usbif->xendev, 0, "device %s wrong speed\n", busid);  in usbback_portid_add()
797         object_unparent(OBJECT(usbif->ports[port - 1].dev));  in usbback_portid_add()
798         usbif->ports[port - 1].dev = NULL;  in usbback_portid_add()
801     usb_device_reset(usbif->ports[port - 1].dev);  in usbback_portid_add()
802     usbif->ports[port - 1].speed = speed;  in usbback_portid_add()
803     usbif->ports[port - 1].attached = true;  in usbback_portid_add()
804     QTAILQ_INIT(&usbif->ports[port - 1].submit_q);  in usbback_portid_add()
805     usbback_hotplug_enq(usbif, port);  in usbback_portid_add()
807     TR_BUS(&usbif->xendev, "port %d attached\n", port);  in usbback_portid_add()
810 static void usbback_process_port(struct usbback_info *usbif, unsigned port)  in usbback_process_port()  argument
816     busid = xenstore_read_be_str(&usbif->xendev, node);  in usbback_process_port()
818         xen_pv_printf(&usbif->xendev, 0, "xenstore_read %s failed\n", node);  in usbback_process_port()
824         usbback_portid_remove(usbif, port);  in usbback_process_port()
826         usbback_portid_add(usbif, port, busid);  in usbback_process_port()
834     struct usbback_info *usbif;  in usbback_disconnect()  local
839     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_disconnect()
843     if (usbif->urb_sring) {  in usbback_disconnect()
844         xen_be_unmap_grant_ref(xendev, usbif->urb_sring, usbif->urb_ring_ref);  in usbback_disconnect()
845         usbif->urb_sring = NULL;  in usbback_disconnect()
847     if (usbif->conn_sring) {  in usbback_disconnect()
848         xen_be_unmap_grant_ref(xendev, usbif->conn_sring, usbif->conn_ring_ref);  in usbback_disconnect()
849         usbif->conn_sring = NULL;  in usbback_disconnect()
852     for (i = 0; i < usbif->num_ports; i++) {  in usbback_disconnect()
853         if (usbif->ports[i].dev) {  in usbback_disconnect()
854             usbback_portid_drain(usbif, i + 1);  in usbback_disconnect()
863     struct usbback_info *usbif;  in usbback_connect()  local
876     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_connect()
891     usbif->urb_sring = xen_be_map_grant_ref(xendev, urb_ring_ref,  in usbback_connect()
893     usbif->conn_sring = xen_be_map_grant_ref(xendev, conn_ring_ref,  in usbback_connect()
895     if (!usbif->urb_sring || !usbif->conn_sring) {  in usbback_connect()
901     usbif->urb_ring_ref = urb_ring_ref;  in usbback_connect()
902     usbif->conn_ring_ref = conn_ring_ref;  in usbback_connect()
903     urb_sring = usbif->urb_sring;  in usbback_connect()
904     conn_sring = usbif->conn_sring;  in usbback_connect()
905     BACK_RING_INIT(&usbif->urb_ring, urb_sring, XEN_PAGE_SIZE);  in usbback_connect()
906     BACK_RING_INIT(&usbif->conn_ring, conn_sring, XEN_PAGE_SIZE);  in usbback_connect()
914     for (i = 1; i <= usbif->num_ports; i++) {  in usbback_connect()
915         if (usbif->ports[i - 1].dev) {  in usbback_connect()
916             usbback_hotplug_enq(usbif, i);  in usbback_connect()
926     struct usbback_info *usbif;  in usbback_backend_changed()  local
931     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_backend_changed()
932     for (i = 1; i <= usbif->num_ports; i++) {  in usbback_backend_changed()
933         usbback_process_port(usbif, i);  in usbback_backend_changed()
939     struct usbback_info *usbif;  in usbback_init()  local
943     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_init()
945     if (xenstore_read_be_int(xendev, "num-ports", &usbif->num_ports) ||  in usbback_init()
946         usbif->num_ports < 1 || usbif->num_ports > USBBACK_MAXPORTS) {  in usbback_init()
950     if (xenstore_read_be_int(xendev, "usb-ver", &usbif->usb_ver) ||  in usbback_init()
951         (usbif->usb_ver != USB_VER_USB11 && usbif->usb_ver != USB_VER_USB20)) {  in usbback_init()
965     struct usbback_info *usbif;  in xen_bus_attach()  local
967     usbif = port->opaque;  in xen_bus_attach()
968     TR_BUS(&usbif->xendev, "\n");  in xen_bus_attach()
969     usbif->ports[port->index].attached = true;  in xen_bus_attach()
970     usbback_hotplug_enq(usbif, port->index + 1);  in xen_bus_attach()
975     struct usbback_info *usbif;  in xen_bus_detach()  local
977     usbif = port->opaque;  in xen_bus_detach()
978     TR_BUS(&usbif->xendev, "\n");  in xen_bus_detach()
979     usbback_portid_detach(usbif, port->index + 1);  in xen_bus_detach()
984     struct usbback_info *usbif;  in xen_bus_child_detach()  local
986     usbif = port->opaque;  in xen_bus_child_detach()
987     TR_BUS(&usbif->xendev, "\n");  in xen_bus_child_detach()
993     struct usbback_info *usbif;  in xen_bus_complete()  local
1001     usbif = usbback_req->usbif;  in xen_bus_complete()
1002     TR_REQ(&usbif->xendev, "\n");  in xen_bus_complete()
1018     struct usbback_info *usbif;  in usbback_alloc()  local
1022     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_alloc()
1024     usb_bus_new(&usbif->bus, sizeof(usbif->bus), &xen_usb_bus_ops,  in usbback_alloc()
1027         p = &(usbif->ports[i].port);  in usbback_alloc()
1028         usb_register_port(&usbif->bus, p, usbif, i, &xen_usb_port_ops,  in usbback_alloc()
1033     QTAILQ_INIT(&usbif->req_free_q);  in usbback_alloc()
1034     QSIMPLEQ_INIT(&usbif->hotplug_q);  in usbback_alloc()
1035     usbif->bh = qemu_bh_new_guarded(usbback_bh, usbif,  in usbback_alloc()
1041     struct usbback_info *usbif;  in usbback_free()  local
1049     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_free()
1050     for (i = 1; i <= usbif->num_ports; i++) {  in usbback_free()
1051         usbback_portid_remove(usbif, i);  in usbback_free()
1054     while (!QTAILQ_EMPTY(&usbif->req_free_q)) {  in usbback_free()
1055         usbback_req = QTAILQ_FIRST(&usbif->req_free_q);  in usbback_free()
1056         QTAILQ_REMOVE(&usbif->req_free_q, usbback_req, q);  in usbback_free()
1059     while (!QSIMPLEQ_EMPTY(&usbif->hotplug_q)) {  in usbback_free()
1060         usb_hp = QSIMPLEQ_FIRST(&usbif->hotplug_q);  in usbback_free()
1061         QSIMPLEQ_REMOVE_HEAD(&usbif->hotplug_q, q);  in usbback_free()
1065     qemu_bh_delete(usbif->bh);  in usbback_free()
1068         usb_unregister_port(&usbif->bus, &(usbif->ports[i].port));  in usbback_free()
1071     usb_bus_release(&usbif->bus);  in usbback_free()
1080     struct usbback_info *usbif;  in usbback_event()  local
1082     usbif = container_of(xendev, struct usbback_info, xendev);  in usbback_event()
1083     qemu_bh_schedule(usbif->bh);  in usbback_event()