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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  
appldata_asm(struct appldata_parameter_list * parm_list,struct appldata_product_id * id,unsigned short fn,void * buffer,unsigned short length)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