| /* |
| * Implementation of s390 diagnose codes |
| * |
| * Copyright IBM Corp. 2007 |
| * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
| */ |
| |
| #include <linux/module.h> |
| #include <asm/diag.h> |
| |
| /* |
| * Diagnose 14: Input spool file manipulation |
| */ |
| int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) |
| { |
| register unsigned long _ry1 asm("2") = ry1; |
| register unsigned long _ry2 asm("3") = subcode; |
| int rc = 0; |
| |
| asm volatile( |
| " sam31\n" |
| " diag %2,2,0x14\n" |
| " sam64\n" |
| " ipm %0\n" |
| " srl %0,28\n" |
| : "=d" (rc), "+d" (_ry2) |
| : "d" (rx), "d" (_ry1) |
| : "cc"); |
| |
| return rc; |
| } |
| EXPORT_SYMBOL(diag14); |
| |
| /* |
| * Diagnose 210: Get information about a virtual device |
| */ |
| int diag210(struct diag210 *addr) |
| { |
| /* |
| * diag 210 needs its data below the 2GB border, so we |
| * use a static data area to be sure |
| */ |
| static struct diag210 diag210_tmp; |
| static DEFINE_SPINLOCK(diag210_lock); |
| unsigned long flags; |
| int ccode; |
| |
| spin_lock_irqsave(&diag210_lock, flags); |
| diag210_tmp = *addr; |
| |
| asm volatile( |
| " lhi %0,-1\n" |
| " sam31\n" |
| " diag %1,0,0x210\n" |
| "0: ipm %0\n" |
| " srl %0,28\n" |
| "1: sam64\n" |
| EX_TABLE(0b, 1b) |
| : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); |
| |
| *addr = diag210_tmp; |
| spin_unlock_irqrestore(&diag210_lock, flags); |
| |
| return ccode; |
| } |
| EXPORT_SYMBOL(diag210); |
