xref: /openbmc/linux/drivers/s390/cio/chsc.h (revision 9ac8d3fb)
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 
12 struct chsc_header {
13 	u16 length;
14 	u16 code;
15 } __attribute__ ((packed));
16 
17 #define NR_MEASUREMENT_CHARS 5
18 struct cmg_chars {
19 	u32 values[NR_MEASUREMENT_CHARS];
20 } __attribute__ ((packed));
21 
22 #define NR_MEASUREMENT_ENTRIES 8
23 struct cmg_entry {
24 	u32 values[NR_MEASUREMENT_ENTRIES];
25 } __attribute__ ((packed));
26 
27 struct 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 
38 struct channel_path;
39 
40 struct css_general_char {
41 	u64 : 12;
42 	u32 dynio : 1;	 /* bit 12 */
43 	u32 : 28;
44 	u32 aif : 1;     /* bit 41 */
45 	u32 : 3;
46 	u32 mcss : 1;    /* bit 45 */
47 	u32 fcs : 1;	 /* bit 46 */
48 	u32 : 1;
49 	u32 ext_mb : 1;  /* bit 48 */
50 	u32 : 7;
51 	u32 aif_tdd : 1; /* bit 56 */
52 	u32 : 1;
53 	u32 qebsm : 1;   /* bit 58 */
54 	u32 : 8;
55 	u32 aif_osa : 1; /* bit 67 */
56 	u32 : 14;
57 	u32 cib : 1;	 /* bit 82 */
58 	u32 : 5;
59 	u32 fcx : 1;	 /* bit 88 */
60 	u32 : 7;
61 }__attribute__((packed));
62 
63 struct css_chsc_char {
64 	u64 res;
65 	u64 : 20;
66 	u32 secm : 1; /* bit 84 */
67 	u32 : 1;
68 	u32 scmc : 1; /* bit 86 */
69 	u32 : 20;
70 	u32 scssc : 1;  /* bit 107 */
71 	u32 scsscf : 1; /* bit 108 */
72 	u32 : 19;
73 }__attribute__((packed));
74 
75 extern struct css_general_char css_general_characteristics;
76 extern struct css_chsc_char css_chsc_characteristics;
77 
78 struct chsc_ssd_info {
79 	u8 path_mask;
80 	u8 fla_valid_mask;
81 	struct chp_id chpid[8];
82 	u16 fla[8];
83 };
84 extern int chsc_get_ssd_info(struct subchannel_id schid,
85 			     struct chsc_ssd_info *ssd);
86 extern int chsc_determine_css_characteristics(void);
87 extern int chsc_alloc_sei_area(void);
88 extern void chsc_free_sei_area(void);
89 
90 extern int chsc_enable_facility(int);
91 struct channel_subsystem;
92 extern int chsc_secm(struct channel_subsystem *, int);
93 
94 int chsc_chp_vary(struct chp_id chpid, int on);
95 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
96 				     int c, int m,
97 				     struct chsc_response_struct *resp);
98 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
99 					  struct channel_path_desc *desc);
100 void chsc_chp_online(struct chp_id chpid);
101 void chsc_chp_offline(struct chp_id chpid);
102 int chsc_get_channel_measurement_chars(struct channel_path *chp);
103 
104 int chsc_error_from_response(int response);
105 
106 #endif
107