drivers/s390/cio/chsc.h

   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
  10 struct chsc_header {
  11         u16 length;
  12         u16 code;
  13 };
  14
  15 #define NR_MEASUREMENT_CHARS 5
  16 struct cmg_chars {
  17         u32 values[NR_MEASUREMENT_CHARS];
  18 };
  19
  20 #define NR_MEASUREMENT_ENTRIES 8
  21 struct cmg_entry {
  22         u32 values[NR_MEASUREMENT_ENTRIES];
  23 };
  24
  25 struct 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
  36 struct 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
  47 extern void s390_process_css( void );
  48 extern void chsc_validate_chpids(struct subchannel *);
  49 extern void chpid_is_actually_online(int);
  50
  51 struct 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
  67 struct 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
  79 extern struct css_general_char css_general_characteristics;
  80 extern struct css_chsc_char css_chsc_characteristics;
  81
  82 extern int chsc_determine_css_characteristics(void);
  83 extern int css_characteristics_avail;
  84
  85 extern void *chsc_get_chp_desc(struct subchannel*, int);
  86
  87 extern int chsc_enable_facility(int);
  88 struct channel_subsystem;
  89 extern int chsc_secm(struct channel_subsystem *, int);
  90
  91 #define to_channelpath(device) container_of(device, struct channel_path, dev)
  92
  93 #endif