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Linux/arch/s390/include/asm/appldata.h

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  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  */
 22 struct 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 
 34 struct 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 
 44 static 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 

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