drivers/s390/cio/chsc.h

   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_chsc_char {
  41         u64 res;
  42         u64 : 20;
  43         u32 secm : 1; /* bit 84 */
  44         u32 : 1;
  45         u32 scmc : 1; /* bit 86 */
  46         u32 : 20;
  47         u32 scssc : 1;  /* bit 107 */
  48         u32 scsscf : 1; /* bit 108 */
  49         u32 : 19;
  50 }__attribute__((packed));
  51
  52 extern struct css_chsc_char css_chsc_characteristics;
  53
  54 struct chsc_ssd_info {
  55         u8 path_mask;
  56         u8 fla_valid_mask;
  57         struct chp_id chpid[8];
  58         u16 fla[8];
  59 };
  60
  61 struct chsc_scpd {
  62         struct chsc_header request;
  63         u32:2;
  64         u32 m:1;
  65         u32 c:1;
  66         u32 fmt:4;
  67         u32 cssid:8;
  68         u32:4;
  69         u32 rfmt:4;
  70         u32 first_chpid:8;
  71         u32:24;
  72         u32 last_chpid:8;
  73         u32 zeroes1;
  74         struct chsc_header response;
  75         u8 data[PAGE_SIZE - 20];
  76 } __attribute__ ((packed));
  77
  78
  79 extern int chsc_get_ssd_info(struct subchannel_id schid,
  80                              struct chsc_ssd_info *ssd);
  81 extern int chsc_determine_css_characteristics(void);
  82 extern int chsc_init(void);
  83 extern void chsc_init_cleanup(void);
  84
  85 extern int chsc_enable_facility(int);
  86 struct channel_subsystem;
  87 extern int chsc_secm(struct channel_subsystem *, int);
  88 int __chsc_do_secm(struct channel_subsystem *css, int enable);
  89
  90 int chsc_chp_vary(struct chp_id chpid, int on);
  91 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
  92                                      int c, int m, void *page);
  93 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
  94                                           struct channel_path_desc *desc);
  95 void chsc_chp_online(struct chp_id chpid);
  96 void chsc_chp_offline(struct chp_id chpid);
  97 int chsc_get_channel_measurement_chars(struct channel_path *chp);
  98
  99 int chsc_error_from_response(int response);
 100
 101 int chsc_siosl(struct subchannel_id schid);
 102
 103 #endif