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  */
  14 static 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  */
  32 extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);
  33
  34 /*
  35  * Diagnose 210: Get information about a virtual device
  36  */
  37 struct 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
  50 extern int diag210(struct diag210 *addr);
  51
  52 #endif /* _ASM_S390_DIAG_H */