arch/s390/include/asm/appldata.h

   1 /*
   2  * include/asm-s390/appldata.h
   3  *
   4  * Copyright (C) IBM Corp. 2006
   5  *
   6  * Author(s): Melissa Howland <melissah@us.ibm.com>
   7  */
   8
   9 #ifndef _ASM_S390_APPLDATA_H
  10 #define _ASM_S390_APPLDATA_H
  11
  12 #include <asm/io.h>
  13
  14 #ifndef CONFIG_64BIT
  15
  16 #define APPLDATA_START_INTERVAL_REC     0x00    /* Function codes for */
  17 #define APPLDATA_STOP_REC               0x01    /* DIAG 0xDC          */
  18 #define APPLDATA_GEN_EVENT_REC          0x02
  19 #define APPLDATA_START_CONFIG_REC       0x03
  20
  21 /*
  22  * Parameter list for DIAGNOSE X'DC'
  23  */
  24 struct appldata_parameter_list {
  25         u16 diag;               /* The DIAGNOSE code X'00DC'          */
  26         u8  function;           /* The function code for the DIAGNOSE */
  27         u8  parlist_length;     /* Length of the parameter list       */
  28         u32 product_id_addr;    /* Address of the 16-byte product ID  */
  29         u16 reserved;
  30         u16 buffer_length;      /* Length of the application data buffer  */
  31         u32 buffer_addr;        /* Address of the application data buffer */
  32 } __attribute__ ((packed));
  33
  34 #else /* CONFIG_64BIT */
  35
  36 #define APPLDATA_START_INTERVAL_REC     0x80
  37 #define APPLDATA_STOP_REC               0x81
  38 #define APPLDATA_GEN_EVENT_REC          0x82
  39 #define APPLDATA_START_CONFIG_REC       0x83
  40
  41 /*
  42  * Parameter list for DIAGNOSE X'DC'
  43  */
  44 struct appldata_parameter_list {
  45         u16 diag;
  46         u8  function;
  47         u8  parlist_length;
  48         u32 unused01;
  49         u16 reserved;
  50         u16 buffer_length;
  51         u32 unused02;
  52         u64 product_id_addr;
  53         u64 buffer_addr;
  54 } __attribute__ ((packed));
  55
  56 #endif /* CONFIG_64BIT */
  57
  58 struct appldata_product_id {
  59         char prod_nr[7];        /* product number */
  60         u16  prod_fn;           /* product function */
  61         u8   record_nr;         /* record number */
  62         u16  version_nr;        /* version */
  63         u16  release_nr;        /* release */
  64         u16  mod_lvl;           /* modification level */
  65 } __attribute__ ((packed));
  66
  67 static inline int appldata_asm(struct appldata_product_id *id,
  68                                unsigned short fn, void *buffer,
  69                                unsigned short length)
  70 {
  71         struct appldata_parameter_list parm_list;
  72         int ry;
  73
  74         if (!MACHINE_IS_VM)
  75                 return -ENOSYS;
  76         parm_list.diag = 0xdc;
  77         parm_list.function = fn;
  78         parm_list.parlist_length = sizeof(parm_list);
  79         parm_list.buffer_length = length;
  80         parm_list.product_id_addr = (unsigned long) id;
  81         parm_list.buffer_addr = virt_to_phys(buffer);
  82         asm volatile(
  83                 "       diag    %1,%0,0xdc"
  84                 : "=d" (ry)
  85                 : "d" (&parm_list), "m" (parm_list), "m" (*id)
  86                 : "cc");
  87         return ry;
  88 }
  89
  90 #endif /* _ASM_S390_APPLDATA_H */