appldata.h

 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 */
23struct 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
35struct 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
45static 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 */