/* * 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);