1/* 2 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> 3 * Horst Hummel <Horst.Hummel@de.ibm.com> 4 * Bugreports.to..: <Linux390@de.ibm.com> 5 * Copyright IBM Corp. 1999, 2000 6 * 7 */ 8 9#ifndef DASD_ECKD_H 10#define DASD_ECKD_H 11 12/***************************************************************************** 13 * SECTION: CCW Definitions 14 ****************************************************************************/ 15#define DASD_ECKD_CCW_WRITE 0x05 16#define DASD_ECKD_CCW_READ 0x06 17#define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09 18#define DASD_ECKD_CCW_READ_HOME_ADDRESS 0x0a 19#define DASD_ECKD_CCW_WRITE_KD 0x0d 20#define DASD_ECKD_CCW_READ_KD 0x0e 21#define DASD_ECKD_CCW_ERASE 0x11 22#define DASD_ECKD_CCW_READ_COUNT 0x12 23#define DASD_ECKD_CCW_SLCK 0x14 24#define DASD_ECKD_CCW_WRITE_RECORD_ZERO 0x15 25#define DASD_ECKD_CCW_READ_RECORD_ZERO 0x16 26#define DASD_ECKD_CCW_WRITE_CKD 0x1d 27#define DASD_ECKD_CCW_READ_CKD 0x1e 28#define DASD_ECKD_CCW_PSF 0x27 29#define DASD_ECKD_CCW_SNID 0x34 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_WRITE_FULL_TRACK 0x95 40#define DASD_ECKD_CCW_READ_CKD_MT 0x9e 41#define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d 42#define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5 43#define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6 44#define DASD_ECKD_CCW_RESERVE 0xB4 45#define DASD_ECKD_CCW_READ_TRACK 0xDE 46#define DASD_ECKD_CCW_PFX 0xE7 47#define DASD_ECKD_CCW_PFX_READ 0xEA 48#define DASD_ECKD_CCW_RSCK 0xF9 49#define DASD_ECKD_CCW_RCD 0xFA 50 51/* 52 * Perform Subsystem Function / Sub-Orders 53 */ 54#define PSF_ORDER_PRSSD 0x18 55#define PSF_ORDER_CUIR_RESPONSE 0x1A 56#define PSF_ORDER_SSC 0x1D 57 58/* 59 * CUIR response condition codes 60 */ 61#define PSF_CUIR_INVALID 0x00 62#define PSF_CUIR_COMPLETED 0x01 63#define PSF_CUIR_NOT_SUPPORTED 0x02 64#define PSF_CUIR_ERROR_IN_REQ 0x03 65#define PSF_CUIR_DENIED 0x04 66#define PSF_CUIR_LAST_PATH 0x05 67#define PSF_CUIR_DEVICE_ONLINE 0x06 68#define PSF_CUIR_VARY_FAILURE 0x07 69#define PSF_CUIR_SOFTWARE_FAILURE 0x08 70#define PSF_CUIR_NOT_RECOGNIZED 0x09 71 72/* 73 * CUIR codes 74 */ 75#define CUIR_QUIESCE 0x01 76#define CUIR_RESUME 0x02 77 78/* 79 * attention message definitions 80 */ 81#define ATTENTION_LENGTH_CUIR 0x0e 82#define ATTENTION_FORMAT_CUIR 0x01 83 84/* 85 * Size that is reportet for large volumes in the old 16-bit no_cyl field 86 */ 87#define LV_COMPAT_CYL 0xFFFE 88 89 90#define FCX_MAX_DATA_FACTOR 65536 91#define DASD_ECKD_RCD_DATA_SIZE 256 92 93 94/***************************************************************************** 95 * SECTION: Type Definitions 96 ****************************************************************************/ 97 98struct eckd_count { 99 __u16 cyl; 100 __u16 head; 101 __u8 record; 102 __u8 kl; 103 __u16 dl; 104} __attribute__ ((packed)); 105 106struct ch_t { 107 __u16 cyl; 108 __u16 head; 109} __attribute__ ((packed)); 110 111struct chs_t { 112 __u16 cyl; 113 __u16 head; 114 __u32 sector; 115} __attribute__ ((packed)); 116 117struct chr_t { 118 __u16 cyl; 119 __u16 head; 120 __u8 record; 121} __attribute__ ((packed)); 122 123struct geom_t { 124 __u16 cyl; 125 __u16 head; 126 __u32 sector; 127} __attribute__ ((packed)); 128 129struct eckd_home { 130 __u8 skip_control[14]; 131 __u16 cell_number; 132 __u8 physical_addr[3]; 133 __u8 flag; 134 struct ch_t track_addr; 135 __u8 reserved; 136 __u8 key_length; 137 __u8 reserved2[2]; 138} __attribute__ ((packed)); 139 140struct DE_eckd_data { 141 struct { 142 unsigned char perm:2; /* Permissions on this extent */ 143 unsigned char reserved:1; 144 unsigned char seek:2; /* Seek control */ 145 unsigned char auth:2; /* Access authorization */ 146 unsigned char pci:1; /* PCI Fetch mode */ 147 } __attribute__ ((packed)) mask; 148 struct { 149 unsigned char mode:2; /* Architecture mode */ 150 unsigned char ckd:1; /* CKD Conversion */ 151 unsigned char operation:3; /* Operation mode */ 152 unsigned char cfw:1; /* Cache fast write */ 153 unsigned char dfw:1; /* DASD fast write */ 154 } __attribute__ ((packed)) attributes; 155 __u16 blk_size; /* Blocksize */ 156 __u16 fast_write_id; 157 __u8 ga_additional; /* Global Attributes Additional */ 158 __u8 ga_extended; /* Global Attributes Extended */ 159 struct ch_t beg_ext; 160 struct ch_t end_ext; 161 unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */ 162 __u8 ep_format; /* Extended Parameter format byte */ 163 __u8 ep_prio; /* Extended Parameter priority I/O byte */ 164 __u8 ep_reserved1; /* Extended Parameter Reserved */ 165 __u8 ep_rec_per_track; /* Number of records on a track */ 166 __u8 ep_reserved[4]; /* Extended Parameter Reserved */ 167} __attribute__ ((packed)); 168 169struct LO_eckd_data { 170 struct { 171 unsigned char orientation:2; 172 unsigned char operation:6; 173 } __attribute__ ((packed)) operation; 174 struct { 175 unsigned char last_bytes_used:1; 176 unsigned char reserved:6; 177 unsigned char read_count_suffix:1; 178 } __attribute__ ((packed)) auxiliary; 179 __u8 unused; 180 __u8 count; 181 struct ch_t seek_addr; 182 struct chr_t search_arg; 183 __u8 sector; 184 __u16 length; 185} __attribute__ ((packed)); 186 187struct LRE_eckd_data { 188 struct { 189 unsigned char orientation:2; 190 unsigned char operation:6; 191 } __attribute__ ((packed)) operation; 192 struct { 193 unsigned char length_valid:1; 194 unsigned char length_scope:1; 195 unsigned char imbedded_ccw_valid:1; 196 unsigned char check_bytes:2; 197 unsigned char imbedded_count_valid:1; 198 unsigned char reserved:1; 199 unsigned char read_count_suffix:1; 200 } __attribute__ ((packed)) auxiliary; 201 __u8 imbedded_ccw; 202 __u8 count; 203 struct ch_t seek_addr; 204 struct chr_t search_arg; 205 __u8 sector; 206 __u16 length; 207 __u8 imbedded_count; 208 __u8 extended_operation; 209 __u16 extended_parameter_length; 210 __u8 extended_parameter[0]; 211} __attribute__ ((packed)); 212 213/* Prefix data for format 0x00 and 0x01 */ 214struct PFX_eckd_data { 215 unsigned char format; 216 struct { 217 unsigned char define_extent:1; 218 unsigned char time_stamp:1; 219 unsigned char verify_base:1; 220 unsigned char hyper_pav:1; 221 unsigned char reserved:4; 222 } __attribute__ ((packed)) validity; 223 __u8 base_address; 224 __u8 aux; 225 __u8 base_lss; 226 __u8 reserved[7]; 227 struct DE_eckd_data define_extent; 228 struct LRE_eckd_data locate_record; 229} __attribute__ ((packed)); 230 231struct dasd_eckd_characteristics { 232 __u16 cu_type; 233 struct { 234 unsigned char support:2; 235 unsigned char async:1; 236 unsigned char reserved:1; 237 unsigned char cache_info:1; 238 unsigned char model:3; 239 } __attribute__ ((packed)) cu_model; 240 __u16 dev_type; 241 __u8 dev_model; 242 struct { 243 unsigned char mult_burst:1; 244 unsigned char RT_in_LR:1; 245 unsigned char reserved1:1; 246 unsigned char RD_IN_LR:1; 247 unsigned char reserved2:4; 248 unsigned char reserved3:8; 249 unsigned char defect_wr:1; 250 unsigned char XRC_supported:1; 251 unsigned char reserved4:1; 252 unsigned char striping:1; 253 unsigned char reserved5:4; 254 unsigned char cfw:1; 255 unsigned char reserved6:2; 256 unsigned char cache:1; 257 unsigned char dual_copy:1; 258 unsigned char dfw:1; 259 unsigned char reset_alleg:1; 260 unsigned char sense_down:1; 261 } __attribute__ ((packed)) facilities; 262 __u8 dev_class; 263 __u8 unit_type; 264 __u16 no_cyl; 265 __u16 trk_per_cyl; 266 __u8 sec_per_trk; 267 __u8 byte_per_track[3]; 268 __u16 home_bytes; 269 __u8 formula; 270 union { 271 struct { 272 __u8 f1; 273 __u16 f2; 274 __u16 f3; 275 } __attribute__ ((packed)) f_0x01; 276 struct { 277 __u8 f1; 278 __u8 f2; 279 __u8 f3; 280 __u8 f4; 281 __u8 f5; 282 } __attribute__ ((packed)) f_0x02; 283 } __attribute__ ((packed)) factors; 284 __u16 first_alt_trk; 285 __u16 no_alt_trk; 286 __u16 first_dia_trk; 287 __u16 no_dia_trk; 288 __u16 first_sup_trk; 289 __u16 no_sup_trk; 290 __u8 MDR_ID; 291 __u8 OBR_ID; 292 __u8 director; 293 __u8 rd_trk_set; 294 __u16 max_rec_zero; 295 __u8 reserved1; 296 __u8 RWANY_in_LR; 297 __u8 factor6; 298 __u8 factor7; 299 __u8 factor8; 300 __u8 reserved2[3]; 301 __u8 reserved3[6]; 302 __u32 long_no_cyl; 303} __attribute__ ((packed)); 304 305/* elements of the configuration data */ 306struct dasd_ned { 307 struct { 308 __u8 identifier:2; 309 __u8 token_id:1; 310 __u8 sno_valid:1; 311 __u8 subst_sno:1; 312 __u8 recNED:1; 313 __u8 emuNED:1; 314 __u8 reserved:1; 315 } __attribute__ ((packed)) flags; 316 __u8 descriptor; 317 __u8 dev_class; 318 __u8 reserved; 319 __u8 dev_type[6]; 320 __u8 dev_model[3]; 321 __u8 HDA_manufacturer[3]; 322 __u8 HDA_location[2]; 323 __u8 HDA_seqno[12]; 324 __u8 ID; 325 __u8 unit_addr; 326} __attribute__ ((packed)); 327 328struct dasd_sneq { 329 struct { 330 __u8 identifier:2; 331 __u8 reserved:6; 332 } __attribute__ ((packed)) flags; 333 __u8 res1; 334 __u16 format; 335 __u8 res2[4]; /* byte 4- 7 */ 336 __u8 sua_flags; /* byte 8 */ 337 __u8 base_unit_addr; /* byte 9 */ 338 __u8 res3[22]; /* byte 10-31 */ 339} __attribute__ ((packed)); 340 341struct vd_sneq { 342 struct { 343 __u8 identifier:2; 344 __u8 reserved:6; 345 } __attribute__ ((packed)) flags; 346 __u8 res1; 347 __u16 format; 348 __u8 res2[4]; /* byte 4- 7 */ 349 __u8 uit[16]; /* byte 8-23 */ 350 __u8 res3[8]; /* byte 24-31 */ 351} __attribute__ ((packed)); 352 353struct dasd_gneq { 354 struct { 355 __u8 identifier:2; 356 __u8 reserved:6; 357 } __attribute__ ((packed)) flags; 358 __u8 reserved[5]; 359 struct { 360 __u8 value:2; 361 __u8 number:6; 362 } __attribute__ ((packed)) timeout; 363 __u8 reserved3; 364 __u16 subsystemID; 365 __u8 reserved2[22]; 366} __attribute__ ((packed)); 367 368struct dasd_rssd_features { 369 char feature[256]; 370} __attribute__((packed)); 371 372struct dasd_rssd_messages { 373 __u16 length; 374 __u8 format; 375 __u8 code; 376 __u32 message_id; 377 __u8 flags; 378 char messages[4087]; 379} __packed; 380 381struct dasd_cuir_message { 382 __u16 length; 383 __u8 format; 384 __u8 code; 385 __u32 message_id; 386 __u8 flags; 387 __u8 neq_map[3]; 388 __u8 ned_map; 389 __u8 record_selector; 390} __packed; 391 392struct dasd_psf_cuir_response { 393 __u8 order; 394 __u8 flags; 395 __u8 cc; 396 __u8 chpid; 397 __u16 device_nr; 398 __u16 reserved; 399 __u32 message_id; 400 __u64 system_id; 401 __u8 cssid; 402 __u8 ssid; 403} __packed; 404 405/* 406 * Perform Subsystem Function - Prepare for Read Subsystem Data 407 */ 408struct dasd_psf_prssd_data { 409 unsigned char order; 410 unsigned char flags; 411 unsigned char reserved[4]; 412 unsigned char suborder; 413 unsigned char varies[5]; 414} __attribute__ ((packed)); 415 416/* 417 * Perform Subsystem Function - Set Subsystem Characteristics 418 */ 419struct dasd_psf_ssc_data { 420 unsigned char order; 421 unsigned char flags; 422 unsigned char cu_type[4]; 423 unsigned char suborder; 424 unsigned char reserved[59]; 425} __attribute__((packed)); 426 427 428/* 429 * some structures and definitions for alias handling 430 */ 431struct dasd_unit_address_configuration { 432 struct { 433 char ua_type; 434 char base_ua; 435 } unit[256]; 436} __attribute__((packed)); 437 438 439#define MAX_DEVICES_PER_LCU 256 440 441/* flags on the LCU */ 442#define NEED_UAC_UPDATE 0x01 443#define UPDATE_PENDING 0x02 444 445enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV}; 446 447 448struct alias_root { 449 struct list_head serverlist; 450 spinlock_t lock; 451}; 452 453struct alias_server { 454 struct list_head server; 455 struct dasd_uid uid; 456 struct list_head lculist; 457}; 458 459struct summary_unit_check_work_data { 460 char reason; 461 struct dasd_device *device; 462 struct work_struct worker; 463}; 464 465struct read_uac_work_data { 466 struct dasd_device *device; 467 struct delayed_work dwork; 468}; 469 470struct alias_lcu { 471 struct list_head lcu; 472 struct dasd_uid uid; 473 enum pavtype pav; 474 char flags; 475 spinlock_t lock; 476 struct list_head grouplist; 477 struct list_head active_devices; 478 struct list_head inactive_devices; 479 struct dasd_unit_address_configuration *uac; 480 struct summary_unit_check_work_data suc_data; 481 struct read_uac_work_data ruac_data; 482 struct dasd_ccw_req *rsu_cqr; 483 struct completion lcu_setup; 484}; 485 486struct alias_pav_group { 487 struct list_head group; 488 struct dasd_uid uid; 489 struct alias_lcu *lcu; 490 struct list_head baselist; 491 struct list_head aliaslist; 492 struct dasd_device *next; 493}; 494 495struct dasd_eckd_private { 496 struct dasd_eckd_characteristics rdc_data; 497 u8 *conf_data; 498 int conf_len; 499 /* pointers to specific parts in the conf_data */ 500 struct dasd_ned *ned; 501 struct dasd_sneq *sneq; 502 struct vd_sneq *vdsneq; 503 struct dasd_gneq *gneq; 504 505 struct eckd_count count_area[5]; 506 int init_cqr_status; 507 int uses_cdl; 508 struct attrib_data_t attrib; /* e.g. cache operations */ 509 struct dasd_rssd_features features; 510 u32 real_cyl; 511 512 /* alias managemnet */ 513 struct dasd_uid uid; 514 struct alias_pav_group *pavgroup; 515 struct alias_lcu *lcu; 516 int count; 517 518 u32 fcx_max_data; 519}; 520 521 522 523int dasd_alias_make_device_known_to_lcu(struct dasd_device *); 524void dasd_alias_disconnect_device_from_lcu(struct dasd_device *); 525int dasd_alias_add_device(struct dasd_device *); 526int dasd_alias_remove_device(struct dasd_device *); 527struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *); 528void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *); 529void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *); 530void dasd_alias_lcu_setup_complete(struct dasd_device *); 531void dasd_alias_wait_for_lcu_setup(struct dasd_device *); 532int dasd_alias_update_add_device(struct dasd_device *); 533#endif /* DASD_ECKD_H */ 534