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