drivers/s390/cio/chsc.h

   1 #ifndef S390_CHSC_H
   2 #define S390_CHSC_H
   3
   4 #define NR_CHPIDS 256
   5
   6 #define CHSC_SEI_ACC_CHPID        1
   7 #define CHSC_SEI_ACC_LINKADDR     2
   8 #define CHSC_SEI_ACC_FULLLINKADDR 3
   9
  10 struct chsc_header {
  11         u16 length;
  12         u16 code;
  13 };
  14
  15 struct channel_path {
  16         int id;
  17         int state;
  18         struct device dev;
  19 };
  20
  21 extern struct channel_path *chps[];
  22
  23 extern void s390_process_css( void );
  24 extern void chsc_validate_chpids(struct subchannel *);
  25 extern void chpid_is_actually_online(int);
  26
  27 struct css_general_char {
  28         u64 : 41;
  29         u32 aif : 1;     /* bit 41 */
  30         u32 : 3;
  31         u32 mcss : 1;    /* bit 45 */
  32         u32 : 2;
  33         u32 ext_mb : 1;  /* bit 48 */
  34         u32 : 7;
  35         u32 aif_tdd : 1; /* bit 56 */
  36         u32 : 10;
  37         u32 aif_osa : 1; /* bit 67 */
  38         u32 : 28;
  39 }__attribute__((packed));
  40
  41 struct css_chsc_char {
  42         u64 res;
  43         u64 : 43;
  44         u32 scssc : 1;  /* bit 107 */
  45         u32 scsscf : 1; /* bit 108 */
  46         u32 : 19;
  47 }__attribute__((packed));
  48
  49 extern struct css_general_char css_general_characteristics;
  50 extern struct css_chsc_char css_chsc_characteristics;
  51
  52 extern int chsc_determine_css_characteristics(void);
  53 extern int css_characteristics_avail;
  54 #endif