LXR linux/arch/s390/include/asm/appldata.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright IBM Corp. 2006
   4 *
   5 * Author(s): Melissa Howland <melissah@us.ibm.com>
   6 */
   7
   8#ifndef _ASM_S390_APPLDATA_H
   9#define _ASM_S390_APPLDATA_H
  10
  11#include <asm/diag.h>
  12#include <asm/io.h>
  13
  14#define APPLDATA_START_INTERVAL_REC     0x80
  15#define APPLDATA_STOP_REC               0x81
  16#define APPLDATA_GEN_EVENT_REC          0x82
  17#define APPLDATA_START_CONFIG_REC       0x83
  18
  19/*
  20 * Parameter list for DIAGNOSE X'DC'
  21 */
  22struct appldata_parameter_list {
  23        u16 diag;
  24        u8  function;
  25        u8  parlist_length;
  26        u32 unused01;
  27        u16 reserved;
  28        u16 buffer_length;
  29        u32 unused02;
  30        u64 product_id_addr;
  31        u64 buffer_addr;
  32} __attribute__ ((packed));
  33
  34struct appldata_product_id {
  35        char prod_nr[7];        /* product number */
  36        u16  prod_fn;           /* product function */
  37        u8   record_nr;         /* record number */
  38        u16  version_nr;        /* version */
  39        u16  release_nr;        /* release */
  40        u16  mod_lvl;           /* modification level */
  41} __attribute__ ((packed));
  42
  43
  44static inline int appldata_asm(struct appldata_parameter_list *parm_list,
  45                               struct appldata_product_id *id,
  46                               unsigned short fn, void *buffer,
  47                               unsigned short length)
  48{
  49        int ry;
  50
  51        if (!MACHINE_IS_VM)
  52                return -EOPNOTSUPP;
  53        parm_list->diag = 0xdc;
  54        parm_list->function = fn;
  55        parm_list->parlist_length = sizeof(*parm_list);
  56        parm_list->buffer_length = length;
  57        parm_list->product_id_addr = (unsigned long) id;
  58        parm_list->buffer_addr = virt_to_phys(buffer);
  59        diag_stat_inc(DIAG_STAT_X0DC);
  60        asm volatile(
  61                "       diag    %1,%0,0xdc"
  62                : "=d" (ry)
  63                : "d" (parm_list), "m" (*parm_list), "m" (*id)
  64                : "cc");
  65        return ry;
  66}
  67
  68#endif /* _ASM_S390_APPLDATA_H */
  69