can abybody provide sample test.c file for altpciechdma driver

i want to invoke read and write function of altpciechdma driver using a user space program, where i will pass a file's data and then write it back , for that purpose i want a test.c file in user space which will call the driver write and read.

i am not getting the driver's write and read function exactly, so if anybody has done the same thing can provide.

thanks in advance.