strange,if bulk and control use td1 and td seperately can use two usb port concurrently.but both use td,will block when access second port.

now we make uhci bulk transfer and control tranfer seperate,can use two port with same tds.

sys/dev/usb/usb_uhci.c

@@ -411,6 +411,10 @@ static int uhci_submit_control_msg(struct usb_device *dev, unsigned long pipe, v
 	int i=0;
 	int s;
 	uhci_t * uhci = dev->hc_private;
+	((uhci_qh_t*)CACHED_TO_UNCACHED(&qh_cntrl))->element =UHCI_PTR_TERM;//0xffffffffL;
+	usb_fill_td(&td_int[0],vtophys(&qh_cntrl) | UHCI_PTR_QH,0,0,0,0L);
+	memset(tmp_td, 0, sizeof(tmp_td));
+	pci_sync_cache(uhci->sc_pc, (vm_offset_t)&tmp_td, sizeof(tmp_td), SYNC_W);
 
 	if (!maxsze) {
 		USB_UHCI_PRINTF("uhci_submit_control_urb: pipesize for pipe %lx is zero\n", pipe);
@@ -535,6 +539,10 @@ static int uhci_submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void
 	int s;
 	uhci_t *uhci = dev->hc_private;
 
+	((uhci_qh_t *)CACHED_TO_UNCACHED(&qh_bulk))->element =UHCI_PTR_TERM;//0xffffffffL;
+	usb_fill_td(&td_int[0],vtophys(&qh_bulk) | UHCI_PTR_QH,0,0,0,0L);
+	memset(tmp_td, 0, sizeof(tmp_td));
+	pci_sync_cache(uhci->sc_pc, (vm_offset_t)&tmp_td, sizeof(tmp_td), SYNC_W);
 	
 	if(transfer_len < 0) {
 		printf("Negative transfer length in submit_bulk\n");
@@ -768,7 +776,8 @@ void usb_init_skel(void *data)
 	memset(&qh_cntrl, 0, sizeof(qh_cntrl));
 	pci_sync_cache(uhci->sc_pc, (vm_offset_t)&qh_cntrl, sizeof(qh_cntrl), SYNC_W);
 		
-	temp=(unsigned long)&qh_bulk;
+//	temp=(unsigned long)&qh_bulk;
+	temp=(unsigned long)&qh_end;
 	usb_fill_qh(&qh_cntrl, vtophys(temp) | UHCI_PTR_QH,UHCI_PTR_TERM);
 	/* 1ms Interrupt td */