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