1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) 4 * Copyright (C) 2001 RidgeRun, Inc (glonnon@ridgerun.com) 5 */ 6 7 #ifndef __UM_UBD_USER_H 8 #define __UM_UBD_USER_H 9 10 extern int start_io_thread(unsigned long sp, int *fds_out); 11 extern int io_thread(void *arg); 12 extern int kernel_fd; 13 14 extern int ubd_read_poll(int timeout); 15 extern int ubd_write_poll(int timeout); 16 17 #define UBD_REQ_BUFFER_SIZE 64 18 19 #endif 20 21