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 extern int chsc_get_ssd_info(struct subchannel_id schid,
  61                              struct chsc_ssd_info *ssd);
  62 extern int chsc_determine_css_characteristics(void);
  63 extern int chsc_alloc_sei_area(void);
  64 extern void chsc_free_sei_area(void);
  65
  66 extern int chsc_enable_facility(int);
  67 struct channel_subsystem;
  68 extern int chsc_secm(struct channel_subsystem *, int);
  69 int __chsc_do_secm(struct channel_subsystem *css, int enable, void *page);
  70
  71 int chsc_chp_vary(struct chp_id chpid, int on);
  72 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
  73                                      int c, int m,
  74                                      struct chsc_response_struct *resp);
  75 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
  76                                           struct channel_path_desc *desc);
  77 void chsc_chp_online(struct chp_id chpid);
  78 void chsc_chp_offline(struct chp_id chpid);
  79 int chsc_get_channel_measurement_chars(struct channel_path *chp);
  80
  81 int chsc_error_from_response(int response);
  82
  83 #endif