LXR linux/arch/s390/include/asm/diag.h

   1/*
   2 * s390 diagnose functions
   3 *
   4 * Copyright IBM Corp. 2007
   5 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
   6 */
   7
   8#ifndef _ASM_S390_DIAG_H
   9#define _ASM_S390_DIAG_H
  10
  11/*
  12 * Diagnose 10: Release page range
  13 */
  14static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
  15{
  16        unsigned long start_addr, end_addr;
  17
  18        start_addr = start_pfn << PAGE_SHIFT;
  19        end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT;
  20
  21        asm volatile(
  22                "0:     diag    %0,%1,0x10\n"
  23                "1:\n"
  24                EX_TABLE(0b, 1b)
  25                EX_TABLE(1b, 1b)
  26                : : "a" (start_addr), "a" (end_addr));
  27}
  28
  29/*
  30 * Diagnose 14: Input spool file manipulation
  31 */
  32extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);
  33
  34/*
  35 * Diagnose 210: Get information about a virtual device
  36 */
  37struct diag210 {
  38        u16 vrdcdvno;   /* device number (input) */
  39        u16 vrdclen;    /* data block length (input) */
  40        u8 vrdcvcla;    /* virtual device class (output) */
  41        u8 vrdcvtyp;    /* virtual device type (output) */
  42        u8 vrdcvsta;    /* virtual device status (output) */
  43        u8 vrdcvfla;    /* virtual device flags (output) */
  44        u8 vrdcrccl;    /* real device class (output) */
  45        u8 vrdccrty;    /* real device type (output) */
  46        u8 vrdccrmd;    /* real device model (output) */
  47        u8 vrdccrft;    /* real device feature (output) */
  48} __attribute__((packed, aligned(4)));
  49
  50extern int diag210(struct diag210 *addr);
  51
  52#endif /* _ASM_S390_DIAG_H */
  53