drivers/s390/block/dasd_eckd.h

   1 /*
   2  * File...........: linux/drivers/s390/block/dasd_eckd.h
   3  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
   4  *                  Horst Hummel <Horst.Hummel@de.ibm.com>
   5  * Bugreports.to..: <Linux390@de.ibm.com>
   6  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
   7  *
   8  * $Revision: 1.10 $
   9  */
  10
  11 #ifndef DASD_ECKD_H
  12 #define DASD_ECKD_H
  13
  14 /*****************************************************************************
  15  * SECTION: CCW Definitions
  16  ****************************************************************************/
  17 #define DASD_ECKD_CCW_WRITE              0x05
  18 #define DASD_ECKD_CCW_READ               0x06
  19 #define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
  20 #define DASD_ECKD_CCW_READ_HOME_ADDRESS  0x0a
  21 #define DASD_ECKD_CCW_WRITE_KD           0x0d
  22 #define DASD_ECKD_CCW_READ_KD            0x0e
  23 #define DASD_ECKD_CCW_ERASE              0x11
  24 #define DASD_ECKD_CCW_READ_COUNT         0x12
  25 #define DASD_ECKD_CCW_SLCK               0x14
  26 #define DASD_ECKD_CCW_WRITE_RECORD_ZERO  0x15
  27 #define DASD_ECKD_CCW_READ_RECORD_ZERO   0x16
  28 #define DASD_ECKD_CCW_WRITE_CKD          0x1d
  29 #define DASD_ECKD_CCW_READ_CKD           0x1e
  30 #define DASD_ECKD_CCW_PSF                0x27
  31 #define DASD_ECKD_CCW_RSSD               0x3e
  32 #define DASD_ECKD_CCW_LOCATE_RECORD      0x47
  33 #define DASD_ECKD_CCW_DEFINE_EXTENT      0x63
  34 #define DASD_ECKD_CCW_WRITE_MT           0x85
  35 #define DASD_ECKD_CCW_READ_MT            0x86
  36 #define DASD_ECKD_CCW_WRITE_KD_MT        0x8d
  37 #define DASD_ECKD_CCW_READ_KD_MT         0x8e
  38 #define DASD_ECKD_CCW_RELEASE            0x94
  39 #define DASD_ECKD_CCW_READ_CKD_MT        0x9e
  40 #define DASD_ECKD_CCW_WRITE_CKD_MT       0x9d
  41 #define DASD_ECKD_CCW_RESERVE            0xB4
  42
  43 /*
  44  *Perform Subsystem Function / Sub-Orders
  45  */
  46 #define PSF_ORDER_PRSSD                  0x18
  47
  48 /*****************************************************************************
  49  * SECTION: Type Definitions
  50  ****************************************************************************/
  51
  52 struct eckd_count {
  53         __u16 cyl;
  54         __u16 head;
  55         __u8 record;
  56         __u8 kl;
  57         __u16 dl;
  58 } __attribute__ ((packed));
  59
  60 struct ch_t {
  61         __u16 cyl;
  62         __u16 head;
  63 } __attribute__ ((packed));
  64
  65 struct chs_t {
  66         __u16 cyl;
  67         __u16 head;
  68         __u32 sector;
  69 } __attribute__ ((packed));
  70
  71 struct chr_t {
  72         __u16 cyl;
  73         __u16 head;
  74         __u8 record;
  75 } __attribute__ ((packed));
  76
  77 struct geom_t {
  78         __u16 cyl;
  79         __u16 head;
  80         __u32 sector;
  81 } __attribute__ ((packed));
  82
  83 struct eckd_home {
  84         __u8 skip_control[14];
  85         __u16 cell_number;
  86         __u8 physical_addr[3];
  87         __u8 flag;
  88         struct ch_t track_addr;
  89         __u8 reserved;
  90         __u8 key_length;
  91         __u8 reserved2[2];
  92 } __attribute__ ((packed));
  93
  94 struct DE_eckd_data {
  95         struct {
  96                 unsigned char perm:2;   /* Permissions on this extent */
  97                 unsigned char reserved:1;
  98                 unsigned char seek:2;   /* Seek control */
  99                 unsigned char auth:2;   /* Access authorization */
 100                 unsigned char pci:1;    /* PCI Fetch mode */
 101         } __attribute__ ((packed)) mask;
 102         struct {
 103                 unsigned char mode:2;   /* Architecture mode */
 104                 unsigned char ckd:1;    /* CKD Conversion */
 105                 unsigned char operation:3;      /* Operation mode */
 106                 unsigned char cfw:1;    /* Cache fast write */
 107                 unsigned char dfw:1;    /* DASD fast write */
 108         } __attribute__ ((packed)) attributes;
 109         __u16 blk_size;         /* Blocksize */
 110         __u16 fast_write_id;
 111         __u8 ga_additional;     /* Global Attributes Additional */
 112         __u8 ga_extended;       /* Global Attributes Extended   */
 113         struct ch_t beg_ext;
 114         struct ch_t end_ext;
 115         unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
 116         __u8 ep_format;        /* Extended Parameter format byte       */
 117         __u8 ep_prio;          /* Extended Parameter priority I/O byte */
 118         __u8 ep_reserved[6];   /* Extended Parameter Reserved          */
 119 } __attribute__ ((packed));
 120
 121 struct LO_eckd_data {
 122         struct {
 123                 unsigned char orientation:2;
 124                 unsigned char operation:6;
 125         } __attribute__ ((packed)) operation;
 126         struct {
 127                 unsigned char last_bytes_used:1;
 128                 unsigned char reserved:6;
 129                 unsigned char read_count_suffix:1;
 130         } __attribute__ ((packed)) auxiliary;
 131         __u8 unused;
 132         __u8 count;
 133         struct ch_t seek_addr;
 134         struct chr_t search_arg;
 135         __u8 sector;
 136         __u16 length;
 137 } __attribute__ ((packed));
 138
 139 struct dasd_eckd_characteristics {
 140         __u16 cu_type;
 141         struct {
 142                 unsigned char support:2;
 143                 unsigned char async:1;
 144                 unsigned char reserved:1;
 145                 unsigned char cache_info:1;
 146                 unsigned char model:3;
 147         } __attribute__ ((packed)) cu_model;
 148         __u16 dev_type;
 149         __u8 dev_model;
 150         struct {
 151                 unsigned char mult_burst:1;
 152                 unsigned char RT_in_LR:1;
 153                 unsigned char reserved1:1;
 154                 unsigned char RD_IN_LR:1;
 155                 unsigned char reserved2:4;
 156                 unsigned char reserved3:8;
 157                 unsigned char defect_wr:1;
 158                 unsigned char XRC_supported:1;
 159                 unsigned char reserved4:1;
 160                 unsigned char striping:1;
 161                 unsigned char reserved5:4;
 162                 unsigned char cfw:1;
 163                 unsigned char reserved6:2;
 164                 unsigned char cache:1;
 165                 unsigned char dual_copy:1;
 166                 unsigned char dfw:1;
 167                 unsigned char reset_alleg:1;
 168                 unsigned char sense_down:1;
 169         } __attribute__ ((packed)) facilities;
 170         __u8 dev_class;
 171         __u8 unit_type;
 172         __u16 no_cyl;
 173         __u16 trk_per_cyl;
 174         __u8 sec_per_trk;
 175         __u8 byte_per_track[3];
 176         __u16 home_bytes;
 177         __u8 formula;
 178         union {
 179                 struct {
 180                         __u8 f1;
 181                         __u16 f2;
 182                         __u16 f3;
 183                 } __attribute__ ((packed)) f_0x01;
 184                 struct {
 185                         __u8 f1;
 186                         __u8 f2;
 187                         __u8 f3;
 188                         __u8 f4;
 189                         __u8 f5;
 190                 } __attribute__ ((packed)) f_0x02;
 191         } __attribute__ ((packed)) factors;
 192         __u16 first_alt_trk;
 193         __u16 no_alt_trk;
 194         __u16 first_dia_trk;
 195         __u16 no_dia_trk;
 196         __u16 first_sup_trk;
 197         __u16 no_sup_trk;
 198         __u8 MDR_ID;
 199         __u8 OBR_ID;
 200         __u8 director;
 201         __u8 rd_trk_set;
 202         __u16 max_rec_zero;
 203         __u8 reserved1;
 204         __u8 RWANY_in_LR;
 205         __u8 factor6;
 206         __u8 factor7;
 207         __u8 factor8;
 208         __u8 reserved2[3];
 209         __u8 reserved3[10];
 210 } __attribute__ ((packed));
 211
 212 struct dasd_eckd_confdata {
 213         struct {
 214                 struct {
 215                         unsigned char identifier:2;
 216                         unsigned char token_id:1;
 217                         unsigned char sno_valid:1;
 218                         unsigned char subst_sno:1;
 219                         unsigned char recNED:1;
 220                         unsigned char emuNED:1;
 221                         unsigned char reserved:1;
 222                 } __attribute__ ((packed)) flags;
 223                 __u8 descriptor;
 224                 __u8 dev_class;
 225                 __u8 reserved;
 226                 unsigned char dev_type[6];
 227                 unsigned char dev_model[3];
 228                 unsigned char HDA_manufacturer[3];
 229                 unsigned char HDA_location[2];
 230                 unsigned char HDA_seqno[12];
 231                 __u16 ID;
 232         } __attribute__ ((packed)) ned1;
 233         struct {
 234                 struct {
 235                         unsigned char identifier:2;
 236                         unsigned char token_id:1;
 237                         unsigned char sno_valid:1;
 238                         unsigned char subst_sno:1;
 239                         unsigned char recNED:1;
 240                         unsigned char emuNED:1;
 241                         unsigned char reserved:1;
 242                 } __attribute__ ((packed)) flags;
 243                 __u8 descriptor;
 244                 __u8 reserved[2];
 245                 unsigned char dev_type[6];
 246                 unsigned char dev_model[3];
 247                 unsigned char DASD_manufacturer[3];
 248                 unsigned char DASD_location[2];
 249                 unsigned char DASD_seqno[12];
 250                 __u16 ID;
 251         } __attribute__ ((packed)) ned2;
 252         struct {
 253                 struct {
 254                         unsigned char identifier:2;
 255                         unsigned char token_id:1;
 256                         unsigned char sno_valid:1;
 257                         unsigned char subst_sno:1;
 258                         unsigned char recNED:1;
 259                         unsigned char emuNED:1;
 260                         unsigned char reserved:1;
 261                 } __attribute__ ((packed)) flags;
 262                 __u8 descriptor;
 263                 __u8 reserved[2];
 264                 unsigned char cont_type[6];
 265                 unsigned char cont_model[3];
 266                 unsigned char cont_manufacturer[3];
 267                 unsigned char cont_location[2];
 268                 unsigned char cont_seqno[12];
 269                 __u16 ID;
 270         } __attribute__ ((packed)) ned3;
 271         struct {
 272                 struct {
 273                         unsigned char identifier:2;
 274                         unsigned char token_id:1;
 275                         unsigned char sno_valid:1;
 276                         unsigned char subst_sno:1;
 277                         unsigned char recNED:1;
 278                         unsigned char emuNED:1;
 279                         unsigned char reserved:1;
 280                 } __attribute__ ((packed)) flags;
 281                 __u8 descriptor;
 282                 __u8 reserved[2];
 283                 unsigned char cont_type[6];
 284                 unsigned char empty[3];
 285                 unsigned char cont_manufacturer[3];
 286                 unsigned char cont_location[2];
 287                 unsigned char cont_seqno[12];
 288                 __u16 ID;
 289         } __attribute__ ((packed)) ned4;
 290         unsigned char ned5[32];
 291         unsigned char ned6[32];
 292         unsigned char ned7[32];
 293         struct {
 294                 struct {
 295                         unsigned char identifier:2;
 296                         unsigned char reserved:6;
 297                 } __attribute__ ((packed)) flags;
 298                 __u8 selector;
 299                 __u16 interfaceID;
 300                 __u32 reserved;
 301                 __u16 subsystemID;
 302                 struct {
 303                         unsigned char sp0:1;
 304                         unsigned char sp1:1;
 305                         unsigned char reserved:5;
 306                         unsigned char scluster:1;
 307                 } __attribute__ ((packed)) spathID;
 308                 __u8 unit_address;
 309                 __u8 dev_ID;
 310                 __u8 dev_address;
 311                 __u8 adapterID;
 312                 __u16 link_address;
 313                 struct {
 314                         unsigned char parallel:1;
 315                         unsigned char escon:1;
 316                         unsigned char reserved:1;
 317                         unsigned char ficon:1;
 318                         unsigned char reserved2:4;
 319                 } __attribute__ ((packed)) protocol_type;
 320                 struct {
 321                         unsigned char PID_in_236:1;
 322                         unsigned char reserved:7;
 323                 } __attribute__ ((packed)) format_flags;
 324                 __u8 log_dev_address;
 325                 unsigned char reserved2[12];
 326         } __attribute__ ((packed)) neq;
 327 } __attribute__ ((packed));
 328
 329 struct dasd_eckd_path {
 330         __u8 opm;
 331         __u8 ppm;
 332         __u8 npm;
 333 };
 334
 335 /*
 336  * Perform Subsystem Function - Prepare for Read Subsystem Data
 337  */
 338 struct dasd_psf_prssd_data {
 339         unsigned char order;
 340         unsigned char flags;
 341         unsigned char reserved[4];
 342         unsigned char suborder;
 343         unsigned char varies[9];
 344 } __attribute__ ((packed));
 345
 346 #endif                          /* DASD_ECKD_H */