tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef S390_CHSC_H
2#define S390_CHSC_H
3
4#define CHSC_SEI_ACC_CHPID 1
5#define CHSC_SEI_ACC_LINKADDR 2
6#define CHSC_SEI_ACC_FULLLINKADDR 3
7
8#define CHSC_SDA_OC_MSS 0x2
9
10struct chsc_header {
11 u16 length;
12 u16 code;
13};
14
15#define NR_MEASUREMENT_CHARS 5
16struct cmg_chars {
17 u32 values[NR_MEASUREMENT_CHARS];
18};
19
20#define NR_MEASUREMENT_ENTRIES 8
21struct cmg_entry {
22 u32 values[NR_MEASUREMENT_ENTRIES];
23};
24
25struct channel_path_desc {
26 u8 flags;
27 u8 lsn;
28 u8 desc;
29 u8 chpid;
30 u8 swla;
31 u8 zeroes;
32 u8 chla;
33 u8 chpp;
34};
35
36struct channel_path {
37 int id;
38 int state;
39 struct channel_path_desc desc;
40 /* Channel-measurement related stuff: */
41 int cmg;
42 int shared;
43 void *cmg_chars;
44 struct device dev;
45};
46
47extern void s390_process_css( void );
48extern void chsc_validate_chpids(struct subchannel *);
49extern void chpid_is_actually_online(int);
50
51struct css_general_char {
52 u64 : 41;
53 u32 aif : 1; /* bit 41 */
54 u32 : 3;
55 u32 mcss : 1; /* bit 45 */
56 u32 : 2;
57 u32 ext_mb : 1; /* bit 48 */
58 u32 : 7;
59 u32 aif_tdd : 1; /* bit 56 */
60 u32 : 1;
61 u32 qebsm : 1; /* bit 58 */
62 u32 : 8;
63 u32 aif_osa : 1; /* bit 67 */
64 u32 : 28;
65}__attribute__((packed));
66
67struct css_chsc_char {
68 u64 res;
69 u64 : 20;
70 u32 secm : 1; /* bit 84 */
71 u32 : 1;
72 u32 scmc : 1; /* bit 86 */
73 u32 : 20;
74 u32 scssc : 1; /* bit 107 */
75 u32 scsscf : 1; /* bit 108 */
76 u32 : 19;
77}__attribute__((packed));
78
79extern struct css_general_char css_general_characteristics;
80extern struct css_chsc_char css_chsc_characteristics;
81
82extern int chsc_determine_css_characteristics(void);
83extern int css_characteristics_avail;
84
85extern void *chsc_get_chp_desc(struct subchannel*, int);
86
87extern int chsc_enable_facility(int);
88struct channel_subsystem;
89extern int chsc_secm(struct channel_subsystem *, int);
90
91#define to_channelpath(device) container_of(device, struct channel_path, dev)
92
93#endif