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 "schid.h"
   8
   9 #define CHSC_SDA_OC_MSS   0x2
  10
  11 struct chsc_header {
  12         u16 length;
  13         u16 code;
  14 } __attribute__ ((packed));
  15
  16 #define NR_MEASUREMENT_CHARS 5
  17 struct cmg_chars {
  18         u32 values[NR_MEASUREMENT_CHARS];
  19 } __attribute__ ((packed));
  20
  21 #define NR_MEASUREMENT_ENTRIES 8
  22 struct cmg_entry {
  23         u32 values[NR_MEASUREMENT_ENTRIES];
  24 } __attribute__ ((packed));
  25
  26 struct channel_path_desc {
  27         u8 flags;
  28         u8 lsn;
  29         u8 desc;
  30         u8 chpid;
  31         u8 swla;
  32         u8 zeroes;
  33         u8 chla;
  34         u8 chpp;
  35 } __attribute__ ((packed));
  36
  37 struct channel_path;
  38
  39 extern void chsc_process_crw(void);
  40
  41 struct css_general_char {
  42         u64 : 41;
  43         u32 aif : 1;     /* bit 41 */
  44         u32 : 3;
  45         u32 mcss : 1;    /* bit 45 */
  46         u32 : 2;
  47         u32 ext_mb : 1;  /* bit 48 */
  48         u32 : 7;
  49         u32 aif_tdd : 1; /* bit 56 */
  50         u32 : 1;
  51         u32 qebsm : 1;   /* bit 58 */
  52         u32 : 8;
  53         u32 aif_osa : 1; /* bit 67 */
  54         u32 : 28;
  55 }__attribute__((packed));
  56
  57 struct css_chsc_char {
  58         u64 res;
  59         u64 : 20;
  60         u32 secm : 1; /* bit 84 */
  61         u32 : 1;
  62         u32 scmc : 1; /* bit 86 */
  63         u32 : 20;
  64         u32 scssc : 1;  /* bit 107 */
  65         u32 scsscf : 1; /* bit 108 */
  66         u32 : 19;
  67 }__attribute__((packed));
  68
  69 extern struct css_general_char css_general_characteristics;
  70 extern struct css_chsc_char css_chsc_characteristics;
  71
  72 struct chsc_ssd_info {
  73         u8 path_mask;
  74         u8 fla_valid_mask;
  75         struct chp_id chpid[8];
  76         u16 fla[8];
  77 };
  78 extern int chsc_get_ssd_info(struct subchannel_id schid,
  79                              struct chsc_ssd_info *ssd);
  80 extern int chsc_determine_css_characteristics(void);
  81 extern int css_characteristics_avail;
  82
  83 extern int chsc_enable_facility(int);
  84 struct channel_subsystem;
  85 extern int chsc_secm(struct channel_subsystem *, int);
  86
  87 int chsc_chp_vary(struct chp_id chpid, int on);
  88 int chsc_determine_channel_path_description(struct chp_id chpid,
  89                                             struct channel_path_desc *desc);
  90 void chsc_chp_online(struct chp_id chpid);
  91 void chsc_chp_offline(struct chp_id chpid);
  92 int chsc_get_channel_measurement_chars(struct channel_path *chp);
  93
  94 #endif