/*
* 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 10: Release pages
*/
void diag10(unsigned long addr)
{
if (addr >= 0x7ff00000)
return;
asm volatile(
#ifdef CONFIG_64BIT
" sam31\n"
" diag %0,%0,0x10\n"
"0: sam64\n"
#else
" diag %0,%0,0x10\n"
"0:\n"
#endif
EX_TABLE(0b, 0b)
: : "a" (addr));
}
EXPORT_SYMBOL(diag10);
/*
* 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(
#ifdef CONFIG_64BIT
" sam31\n"
" diag %2,2,0x14\n"
" sam64\n"
#else
" diag %2,2,0x14\n"
#endif
" 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;
#ifdef CONFIG_64BIT
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");
#else
asm volatile(
" lhi %0,-1\n"
" diag %1,0,0x210\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
EX_TABLE(0b, 1b)
: "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
#endif
*addr = diag210_tmp;
spin_unlock_irqrestore(&diag210_lock, flags);
return ccode;
}
EXPORT_SYMBOL(diag210);
