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