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  */
   9
  10 #ifndef DASD_ECKD_H
  11 #define DASD_ECKD_H
  12
  13 /*****************************************************************************
  14  * SECTION: CCW Definitions
  15  ****************************************************************************/
  16 #define DASD_ECKD_CCW_WRITE              0x05
  17 #define DASD_ECKD_CCW_READ               0x06
  18 #define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
  19 #define DASD_ECKD_CCW_READ_HOME_ADDRESS  0x0a
  20 #define DASD_ECKD_CCW_WRITE_KD           0x0d
  21 #define DASD_ECKD_CCW_READ_KD            0x0e
  22 #define DASD_ECKD_CCW_ERASE              0x11
  23 #define DASD_ECKD_CCW_READ_COUNT         0x12
  24 #define DASD_ECKD_CCW_SLCK               0x14
  25 #define DASD_ECKD_CCW_WRITE_RECORD_ZERO  0x15
  26 #define DASD_ECKD_CCW_READ_RECORD_ZERO   0x16
  27 #define DASD_ECKD_CCW_WRITE_CKD          0x1d
  28 #define DASD_ECKD_CCW_READ_CKD           0x1e
  29 #define DASD_ECKD_CCW_PSF                0x27
  30 #define DASD_ECKD_CCW_RSSD               0x3e
  31 #define DASD_ECKD_CCW_LOCATE_RECORD      0x47
  32 #define DASD_ECKD_CCW_SNSS               0x54
  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 #define PSF_ORDER_SSC   0x1D
  48
  49 /*****************************************************************************
  50  * SECTION: Type Definitions
  51  ****************************************************************************/
  52
  53 struct eckd_count {
  54         __u16 cyl;
  55         __u16 head;
  56         __u8 record;
  57         __u8 kl;
  58         __u16 dl;
  59 } __attribute__ ((packed));
  60
  61 struct ch_t {
  62         __u16 cyl;
  63         __u16 head;
  64 } __attribute__ ((packed));
  65
  66 struct chs_t {
  67         __u16 cyl;
  68         __u16 head;
  69         __u32 sector;
  70 } __attribute__ ((packed));
  71
  72 struct chr_t {
  73         __u16 cyl;
  74         __u16 head;
  75         __u8 record;
  76 } __attribute__ ((packed));
  77
  78 struct geom_t {
  79         __u16 cyl;
  80         __u16 head;
  81         __u32 sector;
  82 } __attribute__ ((packed));
  83
  84 struct eckd_home {
  85         __u8 skip_control[14];
  86         __u16 cell_number;
  87         __u8 physical_addr[3];
  88         __u8 flag;
  89         struct ch_t track_addr;
  90         __u8 reserved;
  91         __u8 key_length;
  92         __u8 reserved2[2];
  93 } __attribute__ ((packed));
  94
  95 struct DE_eckd_data {
  96         struct {
  97                 unsigned char perm:2;   /* Permissions on this extent */
  98                 unsigned char reserved:1;
  99                 unsigned char seek:2;   /* Seek control */
 100                 unsigned char auth:2;   /* Access authorization */
 101                 unsigned char pci:1;    /* PCI Fetch mode */
 102         } __attribute__ ((packed)) mask;
 103         struct {
 104                 unsigned char mode:2;   /* Architecture mode */
 105                 unsigned char ckd:1;    /* CKD Conversion */
 106                 unsigned char operation:3;      /* Operation mode */
 107                 unsigned char cfw:1;    /* Cache fast write */
 108                 unsigned char dfw:1;    /* DASD fast write */
 109         } __attribute__ ((packed)) attributes;
 110         __u16 blk_size;         /* Blocksize */
 111         __u16 fast_write_id;
 112         __u8 ga_additional;     /* Global Attributes Additional */
 113         __u8 ga_extended;       /* Global Attributes Extended   */
 114         struct ch_t beg_ext;
 115         struct ch_t end_ext;
 116         unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
 117         __u8 ep_format;        /* Extended Parameter format byte       */
 118         __u8 ep_prio;          /* Extended Parameter priority I/O byte */
 119         __u8 ep_reserved[6];   /* Extended Parameter Reserved          */
 120 } __attribute__ ((packed));
 121
 122 struct LO_eckd_data {
 123         struct {
 124                 unsigned char orientation:2;
 125                 unsigned char operation:6;
 126         } __attribute__ ((packed)) operation;
 127         struct {
 128                 unsigned char last_bytes_used:1;
 129                 unsigned char reserved:6;
 130                 unsigned char read_count_suffix:1;
 131         } __attribute__ ((packed)) auxiliary;
 132         __u8 unused;
 133         __u8 count;
 134         struct ch_t seek_addr;
 135         struct chr_t search_arg;
 136         __u8 sector;
 137         __u16 length;
 138 } __attribute__ ((packed));
 139
 140 struct dasd_eckd_characteristics {
 141         __u16 cu_type;
 142         struct {
 143                 unsigned char support:2;
 144                 unsigned char async:1;
 145                 unsigned char reserved:1;
 146                 unsigned char cache_info:1;
 147                 unsigned char model:3;
 148         } __attribute__ ((packed)) cu_model;
 149         __u16 dev_type;
 150         __u8 dev_model;
 151         struct {
 152                 unsigned char mult_burst:1;
 153                 unsigned char RT_in_LR:1;
 154                 unsigned char reserved1:1;
 155                 unsigned char RD_IN_LR:1;
 156                 unsigned char reserved2:4;
 157                 unsigned char reserved3:8;
 158                 unsigned char defect_wr:1;
 159                 unsigned char XRC_supported:1;
 160                 unsigned char reserved4:1;
 161                 unsigned char striping:1;
 162                 unsigned char reserved5:4;
 163                 unsigned char cfw:1;
 164                 unsigned char reserved6:2;
 165                 unsigned char cache:1;
 166                 unsigned char dual_copy:1;
 167                 unsigned char dfw:1;
 168                 unsigned char reset_alleg:1;
 169                 unsigned char sense_down:1;
 170         } __attribute__ ((packed)) facilities;
 171         __u8 dev_class;
 172         __u8 unit_type;
 173         __u16 no_cyl;
 174         __u16 trk_per_cyl;
 175         __u8 sec_per_trk;
 176         __u8 byte_per_track[3];
 177         __u16 home_bytes;
 178         __u8 formula;
 179         union {
 180                 struct {
 181                         __u8 f1;
 182                         __u16 f2;
 183                         __u16 f3;
 184                 } __attribute__ ((packed)) f_0x01;
 185                 struct {
 186                         __u8 f1;
 187                         __u8 f2;
 188                         __u8 f3;
 189                         __u8 f4;
 190                         __u8 f5;
 191                 } __attribute__ ((packed)) f_0x02;
 192         } __attribute__ ((packed)) factors;
 193         __u16 first_alt_trk;
 194         __u16 no_alt_trk;
 195         __u16 first_dia_trk;
 196         __u16 no_dia_trk;
 197         __u16 first_sup_trk;
 198         __u16 no_sup_trk;
 199         __u8 MDR_ID;
 200         __u8 OBR_ID;
 201         __u8 director;
 202         __u8 rd_trk_set;
 203         __u16 max_rec_zero;
 204         __u8 reserved1;
 205         __u8 RWANY_in_LR;
 206         __u8 factor6;
 207         __u8 factor7;
 208         __u8 factor8;
 209         __u8 reserved2[3];
 210         __u8 reserved3[10];
 211 } __attribute__ ((packed));
 212
 213 struct dasd_eckd_confdata {
 214         struct {
 215                 struct {
 216                         unsigned char identifier:2;
 217                         unsigned char token_id:1;
 218                         unsigned char sno_valid:1;
 219                         unsigned char subst_sno:1;
 220                         unsigned char recNED:1;
 221                         unsigned char emuNED:1;
 222                         unsigned char reserved:1;
 223                 } __attribute__ ((packed)) flags;
 224                 __u8 descriptor;
 225                 __u8 dev_class;
 226                 __u8 reserved;
 227                 unsigned char dev_type[6];
 228                 unsigned char dev_model[3];
 229                 unsigned char HDA_manufacturer[3];
 230                 unsigned char HDA_location[2];
 231                 unsigned char HDA_seqno[12];
 232                 __u8 ID;
 233                 __u8 unit_addr;
 234         } __attribute__ ((packed)) ned1;
 235         union {
 236                 struct {
 237                         struct {
 238                                 unsigned char identifier:2;
 239                                 unsigned char token_id:1;
 240                                 unsigned char sno_valid:1;
 241                                 unsigned char subst_sno:1;
 242                                 unsigned char recNED:1;
 243                                 unsigned char emuNED:1;
 244                                 unsigned char reserved:1;
 245                         } __attribute__ ((packed)) flags;
 246                         __u8 descriptor;
 247                         __u8 reserved[2];
 248                         unsigned char dev_type[6];
 249                         unsigned char dev_model[3];
 250                         unsigned char DASD_manufacturer[3];
 251                         unsigned char DASD_location[2];
 252                         unsigned char DASD_seqno[12];
 253                         __u16 ID;
 254                 } __attribute__ ((packed)) ned;
 255                 struct {
 256                         unsigned char flags;            /* byte  0    */
 257                         unsigned char res2[7];          /* byte  1- 7 */
 258                         unsigned char sua_flags;        /* byte  8    */
 259                         __u8 base_unit_addr;            /* byte  9    */
 260                         unsigned char res3[22];         /* byte 10-31 */
 261                 } __attribute__ ((packed)) sneq;
 262         } __attribute__ ((packed)) ned2;
 263         struct {
 264                 struct {
 265                         unsigned char identifier:2;
 266                         unsigned char token_id:1;
 267                         unsigned char sno_valid:1;
 268                         unsigned char subst_sno:1;
 269                         unsigned char recNED:1;
 270                         unsigned char emuNED:1;
 271                         unsigned char reserved:1;
 272                 } __attribute__ ((packed)) flags;
 273                 __u8 descriptor;
 274                 __u8 reserved[2];
 275                 unsigned char cont_type[6];
 276                 unsigned char cont_model[3];
 277                 unsigned char cont_manufacturer[3];
 278                 unsigned char cont_location[2];
 279                 unsigned char cont_seqno[12];
 280                 __u16 ID;
 281         } __attribute__ ((packed)) ned3;
 282         struct {
 283                 struct {
 284                         unsigned char identifier:2;
 285                         unsigned char token_id:1;
 286                         unsigned char sno_valid:1;
 287                         unsigned char subst_sno:1;
 288                         unsigned char recNED:1;
 289                         unsigned char emuNED:1;
 290                         unsigned char reserved:1;
 291                 } __attribute__ ((packed)) flags;
 292                 __u8 descriptor;
 293                 __u8 reserved[2];
 294                 unsigned char cont_type[6];
 295                 unsigned char empty[3];
 296                 unsigned char cont_manufacturer[3];
 297                 unsigned char cont_location[2];
 298                 unsigned char cont_seqno[12];
 299                 __u16 ID;
 300         } __attribute__ ((packed)) ned4;
 301         unsigned char ned5[32];
 302         unsigned char ned6[32];
 303         unsigned char ned7[32];
 304         struct {
 305                 struct {
 306                         unsigned char identifier:2;
 307                         unsigned char reserved:6;
 308                 } __attribute__ ((packed)) flags;
 309                 __u8 selector;
 310                 __u16 interfaceID;
 311                 __u32 reserved;
 312                 __u16 subsystemID;
 313                 struct {
 314                         unsigned char sp0:1;
 315                         unsigned char sp1:1;
 316                         unsigned char reserved:5;
 317                         unsigned char scluster:1;
 318                 } __attribute__ ((packed)) spathID;
 319                 __u8 unit_address;
 320                 __u8 dev_ID;
 321                 __u8 dev_address;
 322                 __u8 adapterID;
 323                 __u16 link_address;
 324                 struct {
 325                         unsigned char parallel:1;
 326                         unsigned char escon:1;
 327                         unsigned char reserved:1;
 328                         unsigned char ficon:1;
 329                         unsigned char reserved2:4;
 330                 } __attribute__ ((packed)) protocol_type;
 331                 struct {
 332                         unsigned char PID_in_236:1;
 333                         unsigned char reserved:7;
 334                 } __attribute__ ((packed)) format_flags;
 335                 __u8 log_dev_address;
 336                 unsigned char reserved2[12];
 337         } __attribute__ ((packed)) neq;
 338 } __attribute__ ((packed));
 339
 340 struct dasd_eckd_path {
 341         __u8 opm;
 342         __u8 ppm;
 343         __u8 npm;
 344 };
 345
 346 /*
 347  * Perform Subsystem Function - Prepare for Read Subsystem Data
 348  */
 349 struct dasd_psf_prssd_data {
 350         unsigned char order;
 351         unsigned char flags;
 352         unsigned char reserved[4];
 353         unsigned char suborder;
 354         unsigned char varies[9];
 355 } __attribute__ ((packed));
 356
 357 /*
 358  * Perform Subsystem Function - Set Subsystem Characteristics
 359  */
 360 struct dasd_psf_ssc_data {
 361         unsigned char order;
 362         unsigned char flags;
 363         unsigned char cu_type[4];
 364         unsigned char suborder;
 365         unsigned char reserved[59];
 366 } __attribute__((packed));
 367
 368 #endif                          /* DASD_ECKD_H */