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_desc_fmt1 {
  39         u8 flags;
  40         u8 lsn;
  41         u8 desc;
  42         u8 chpid;
  43         u32:24;
  44         u8 chpp;
  45         u32 unused[3];
  46         u16 mdc;
  47         u16:13;
  48         u8 r:1;
  49         u8 s:1;
  50         u8 f:1;
  51         u32 zeros[2];
  52 } __attribute__ ((packed));
  53
  54 struct channel_path;
  55
  56 struct css_chsc_char {
  57         u64 res;
  58         u64 : 20;
  59         u32 secm : 1; /* bit 84 */
  60         u32 : 1;
  61         u32 scmc : 1; /* bit 86 */
  62         u32 : 20;
  63         u32 scssc : 1;  /* bit 107 */
  64         u32 scsscf : 1; /* bit 108 */
  65         u32 : 19;
  66 }__attribute__((packed));
  67
  68 extern struct css_chsc_char css_chsc_characteristics;
  69
  70 struct chsc_ssd_info {
  71         u8 path_mask;
  72         u8 fla_valid_mask;
  73         struct chp_id chpid[8];
  74         u16 fla[8];
  75 };
  76
  77 struct chsc_scpd {
  78         struct chsc_header request;
  79         u32:2;
  80         u32 m:1;
  81         u32 c:1;
  82         u32 fmt:4;
  83         u32 cssid:8;
  84         u32:4;
  85         u32 rfmt:4;
  86         u32 first_chpid:8;
  87         u32:24;
  88         u32 last_chpid:8;
  89         u32 zeroes1;
  90         struct chsc_header response;
  91         u8 data[PAGE_SIZE - 20];
  92 } __attribute__ ((packed));
  93
  94
  95 extern int chsc_get_ssd_info(struct subchannel_id schid,
  96                              struct chsc_ssd_info *ssd);
  97 extern int chsc_determine_css_characteristics(void);
  98 extern int chsc_init(void);
  99 extern void chsc_init_cleanup(void);
 100
 101 extern int chsc_enable_facility(int);
 102 struct channel_subsystem;
 103 extern int chsc_secm(struct channel_subsystem *, int);
 104 int __chsc_do_secm(struct channel_subsystem *css, int enable);
 105
 106 int chsc_chp_vary(struct chp_id chpid, int on);
 107 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
 108                                      int c, int m, void *page);
 109 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
 110                                           struct channel_path_desc *desc);
 111 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
 112                                           struct channel_path_desc_fmt1 *desc);
 113 void chsc_chp_online(struct chp_id chpid);
 114 void chsc_chp_offline(struct chp_id chpid);
 115 int chsc_get_channel_measurement_chars(struct channel_path *chp);
 116
 117 int chsc_error_from_response(int response);
 118
 119 int chsc_siosl(struct subchannel_id schid);
 120
 121 #endif