arch/s390/include/asm/appldata.h

   1 /*
   2  * Copyright IBM Corp. 2006
   3  *
   4  * Author(s): Melissa Howland <melissah@us.ibm.com>
   5  */
   6
   7 #ifndef _ASM_S390_APPLDATA_H
   8 #define _ASM_S390_APPLDATA_H
   9
  10 #include <asm/diag.h>
  11 #include <asm/io.h>
  12
  13 #define APPLDATA_START_INTERVAL_REC     0x80
  14 #define APPLDATA_STOP_REC               0x81
  15 #define APPLDATA_GEN_EVENT_REC          0x82
  16 #define APPLDATA_START_CONFIG_REC       0x83
  17
  18 /*
  19  * Parameter list for DIAGNOSE X'DC'
  20  */
  21 struct appldata_parameter_list {
  22         u16 diag;
  23         u8  function;
  24         u8  parlist_length;
  25         u32 unused01;
  26         u16 reserved;
  27         u16 buffer_length;
  28         u32 unused02;
  29         u64 product_id_addr;
  30         u64 buffer_addr;
  31 } __attribute__ ((packed));
  32
  33 struct appldata_product_id {
  34         char prod_nr[7];        /* product number */
  35         u16  prod_fn;           /* product function */
  36         u8   record_nr;         /* record number */
  37         u16  version_nr;        /* version */
  38         u16  release_nr;        /* release */
  39         u16  mod_lvl;           /* modification level */
  40 } __attribute__ ((packed));
  41
  42 static inline int appldata_asm(struct appldata_product_id *id,
  43                                unsigned short fn, void *buffer,
  44                                unsigned short length)
  45 {
  46         struct appldata_parameter_list parm_list;
  47         int ry;
  48
  49         if (!MACHINE_IS_VM)
  50                 return -EOPNOTSUPP;
  51         parm_list.diag = 0xdc;
  52         parm_list.function = fn;
  53         parm_list.parlist_length = sizeof(parm_list);
  54         parm_list.buffer_length = length;
  55         parm_list.product_id_addr = (unsigned long) id;
  56         parm_list.buffer_addr = virt_to_phys(buffer);
  57         diag_stat_inc(DIAG_STAT_X0DC);
  58         asm volatile(
  59                 "       diag    %1,%0,0xdc"
  60                 : "=d" (ry)
  61                 : "d" (&parm_list), "m" (parm_list), "m" (*id)
  62                 : "cc");
  63         return ry;
  64 }
  65
  66 #endif /* _ASM_S390_APPLDATA_H */