| * Copyright IBM Corp. 2004, 2005 |
| * Interface implementation for communication with the z/VM control program |
| * Author(s): Christian Borntraeger <cborntra@de.ibm.com> |
| * z/VMs CP offers the possibility to issue commands via the diagnose code 8 |
| * this driver implements a character device that issues these commands and |
| * returns the answer of CP. |
| * The idea of this driver is based on cpint from Neale Ferguson |
| #define VMCP_GETCODE _IOR(0x10, 1, int) |
| #define VMCP_SETBUF _IOW(0x10, 2, int) |
| #define VMCP_GETSIZE _IOR(0x10, 3, int) |
| /* As we use copy_from/to_user, which might * |
| * sleep and cannot use a spinlock */ |