LXR linux/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 */
  24struct 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 */
  44struct 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
  58struct 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
  67static 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 */
  91