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

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

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