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 #include <linux/percpu.h>
  12
  13 enum diag_stat_enum {
  14         DIAG_STAT_X008,
  15         DIAG_STAT_X00C,
  16         DIAG_STAT_X010,
  17         DIAG_STAT_X014,
  18         DIAG_STAT_X044,
  19         DIAG_STAT_X064,
  20         DIAG_STAT_X09C,
  21         DIAG_STAT_X0DC,
  22         DIAG_STAT_X204,
  23         DIAG_STAT_X210,
  24         DIAG_STAT_X224,
  25         DIAG_STAT_X250,
  26         DIAG_STAT_X258,
  27         DIAG_STAT_X288,
  28         DIAG_STAT_X2C4,
  29         DIAG_STAT_X2FC,
  30         DIAG_STAT_X304,
  31         DIAG_STAT_X308,
  32         DIAG_STAT_X500,
  33         NR_DIAG_STAT
  34 };
  35
  36 void diag_stat_inc(enum diag_stat_enum nr);
  37 void diag_stat_inc_norecursion(enum diag_stat_enum nr);
  38
  39 /*
  40  * Diagnose 10: Release page range
  41  */
  42 static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
  43 {
  44         unsigned long start_addr, end_addr;
  45
  46         start_addr = start_pfn << PAGE_SHIFT;
  47         end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT;
  48
  49         diag_stat_inc(DIAG_STAT_X010);
  50         asm volatile(
  51                 "0:     diag    %0,%1,0x10\n"
  52                 "1:     nopr    %%r7\n"
  53                 EX_TABLE(0b, 1b)
  54                 EX_TABLE(1b, 1b)
  55                 : : "a" (start_addr), "a" (end_addr));
  56 }
  57
  58 /*
  59  * Diagnose 14: Input spool file manipulation
  60  */
  61 extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);
  62
  63 /*
  64  * Diagnose 210: Get information about a virtual device
  65  */
  66 struct diag210 {
  67         u16 vrdcdvno;   /* device number (input) */
  68         u16 vrdclen;    /* data block length (input) */
  69         u8 vrdcvcla;    /* virtual device class (output) */
  70         u8 vrdcvtyp;    /* virtual device type (output) */
  71         u8 vrdcvsta;    /* virtual device status (output) */
  72         u8 vrdcvfla;    /* virtual device flags (output) */
  73         u8 vrdcrccl;    /* real device class (output) */
  74         u8 vrdccrty;    /* real device type (output) */
  75         u8 vrdccrmd;    /* real device model (output) */
  76         u8 vrdccrft;    /* real device feature (output) */
  77 } __attribute__((packed, aligned(4)));
  78
  79 extern int diag210(struct diag210 *addr);
  80
  81 #endif /* _ASM_S390_DIAG_H */