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/machine.h>
13 #include <asm/diag.h>
14
15 #define APPLDATA_START_INTERVAL_REC 0x80
16 #define APPLDATA_STOP_REC 0x81
17 #define APPLDATA_GEN_EVENT_REC 0x82
18 #define APPLDATA_START_CONFIG_REC 0x83
19
20 /*
21 * Parameter list for DIAGNOSE X'DC'
22 */
23 struct appldata_parameter_list {
24 u16 diag;
25 u8 function;
26 u8 parlist_length;
27 u32 unused01;
28 u16 reserved;
29 u16 buffer_length;
30 u32 unused02;
31 u64 product_id_addr;
32 u64 buffer_addr;
33 } __attribute__ ((packed));
34
35 struct appldata_product_id {
36 char prod_nr[7]; /* product number */
37 u16 prod_fn; /* product function */
38 u8 record_nr; /* record number */
39 u16 version_nr; /* version */
40 u16 release_nr; /* release */
41 u16 mod_lvl; /* modification level */
42 } __attribute__ ((packed));
43
44
appldata_asm(struct appldata_parameter_list * parm_list,struct appldata_product_id * id,unsigned short fn,void * buffer,unsigned short length)45 static inline int appldata_asm(struct appldata_parameter_list *parm_list,
46 struct appldata_product_id *id,
47 unsigned short fn, void *buffer,
48 unsigned short length)
49 {
50 int ry;
51
52 if (!machine_is_vm())
53 return -EOPNOTSUPP;
54 parm_list->diag = 0xdc;
55 parm_list->function = fn;
56 parm_list->parlist_length = sizeof(*parm_list);
57 parm_list->buffer_length = length;
58 parm_list->product_id_addr = virt_to_phys(id);
59 parm_list->buffer_addr = virt_to_phys(buffer);
60 diag_stat_inc(DIAG_STAT_X0DC);
61 asm volatile(
62 " diag %1,%0,0xdc"
63 : "=d" (ry)
64 : "d" (virt_to_phys(parm_list)), "m" (*parm_list), "m" (*id)
65 : "cc");
66 return ry;
67 }
68
69 #endif /* _ASM_S390_APPLDATA_H */
70