xref: /openbmc/linux/arch/s390/include/asm/appldata.h (revision b378a982)
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 <linux/io.h>
12 #include <asm/diag.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