LXR linux/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 */
  22struct 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 */
  42struct 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
  56struct 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
  65static 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 */
  89