98         let mut buf_ptr = buf as *mut [u8] as *mut usize as usize;  in read_at()  localVariable
102         let user_buf = if unsafe { verify_area(buf_ptr as u64, buf.len() as u64) } {  in read_at()
118             buf_ptr = kbuf.as_mut().unwrap().as_mut_ptr() as usize;  in read_at()
136             volatile_write!(cmdtbl.prdt_entry[i].dba, virt_2_phys(buf_ptr) as u64);  in read_at()
139             buf_ptr += 8 * 1024;  in read_at()
145         volatile_write!(cmdtbl.prdt_entry[las].dba, virt_2_phys(buf_ptr) as u64);  in read_at()
260         let mut buf_ptr = buf as *const [u8] as *mut usize as usize;  in write_at()  localVariable
264         let user_buf = if unsafe { verify_area(buf_ptr as u64, buf.len() as u64) } {  in write_at()
279             buf_ptr = kbuf.as_mut().unwrap().as_mut_ptr() as usize;  in write_at()
298             volatile_write!(cmdtbl.prdt_entry[i].dba, virt_2_phys(buf_ptr) as u64);  in write_at()
301             buf_ptr += 8 * 1024;  in write_at()
307         volatile_write!(cmdtbl.prdt_entry[las].dba, virt_2_phys(buf_ptr) as u64);  in write_at()