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192.168.1.100 / R306 / 0d38ff9c7afa1207beebf9fa0886f87741dfb64a / . / ap / os / linux / linux-3.4.x / drivers / s390 / cio / chsc.h
blob: 3f15b2aaeaea0a7dc1b1684033e169b8ebfa0f9b [file] [log] [blame]
yuezonghe824eb0c2024-06-27 02:32:26 -0700[diff] [blame]1#ifndef S390_CHSC_H
2#define S390_CHSC_H
3
4#include <linux/types.h>
5#include <linux/device.h>
6#include <asm/chpid.h>
7#include <asm/chsc.h>
8#include <asm/schid.h>
9
10#define CHSC_SDA_OC_MSS 0x2
11
12struct chsc_header {
13 u16 length;
14 u16 code;
15} __attribute__ ((packed));
16
17#define NR_MEASUREMENT_CHARS 5
18struct cmg_chars {
19 u32 values[NR_MEASUREMENT_CHARS];
20} __attribute__ ((packed));
21
22#define NR_MEASUREMENT_ENTRIES 8
23struct cmg_entry {
24 u32 values[NR_MEASUREMENT_ENTRIES];
25} __attribute__ ((packed));
26
27struct channel_path_desc {
28 u8 flags;
29 u8 lsn;
30 u8 desc;
31 u8 chpid;
32 u8 swla;
33 u8 zeroes;
34 u8 chla;
35 u8 chpp;
36} __attribute__ ((packed));
37
38struct channel_path_desc_fmt1 {
39 u8 flags;
40 u8 lsn;
41 u8 desc;
42 u8 chpid;
43 u32:24;
44 u8 chpp;
45 u32 unused[3];
46 u16 mdc;
47 u16:13;
48 u8 r:1;
49 u8 s:1;
50 u8 f:1;
51 u32 zeros[2];
52} __attribute__ ((packed));
53
54struct channel_path;
55
56struct css_chsc_char {
57 u64 res;
58 u64 : 20;
59 u32 secm : 1; /* bit 84 */
60 u32 : 1;
61 u32 scmc : 1; /* bit 86 */
62 u32 : 20;
63 u32 scssc : 1; /* bit 107 */
64 u32 scsscf : 1; /* bit 108 */
65 u32 : 19;
66}__attribute__((packed));
67
68extern struct css_chsc_char css_chsc_characteristics;
69
70struct chsc_ssd_info {
71 u8 path_mask;
72 u8 fla_valid_mask;
73 struct chp_id chpid[8];
74 u16 fla[8];
75};
76
77struct chsc_scpd {
78 struct chsc_header request;
79 u32:2;
80 u32 m:1;
81 u32 c:1;
82 u32 fmt:4;
83 u32 cssid:8;
84 u32:4;
85 u32 rfmt:4;
86 u32 first_chpid:8;
87 u32:24;
88 u32 last_chpid:8;
89 u32 zeroes1;
90 struct chsc_header response;
91 u8 data[PAGE_SIZE - 20];
92} __attribute__ ((packed));
93
94
95extern int chsc_get_ssd_info(struct subchannel_id schid,
96 struct chsc_ssd_info *ssd);
97extern int chsc_determine_css_characteristics(void);
98extern int chsc_init(void);
99extern void chsc_init_cleanup(void);
100
101extern int chsc_enable_facility(int);
102struct channel_subsystem;
103extern int chsc_secm(struct channel_subsystem *, int);
104int __chsc_do_secm(struct channel_subsystem *css, int enable);
105
106int chsc_chp_vary(struct chp_id chpid, int on);
107int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
108 int c, int m, void *page);
109int chsc_determine_base_channel_path_desc(struct chp_id chpid,
110 struct channel_path_desc *desc);
111int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
112 struct channel_path_desc_fmt1 *desc);
113void chsc_chp_online(struct chp_id chpid);
114void chsc_chp_offline(struct chp_id chpid);
115int chsc_get_channel_measurement_chars(struct channel_path *chp);
116
117int chsc_error_from_response(int response);
118
119int chsc_siosl(struct subchannel_id schid);
120
121#endif