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_WRITE_TRACK_DATA 0xA5 42#define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6 43#define DASD_ECKD_CCW_RESERVE 0xB4 44#define DASD_ECKD_CCW_PFX 0xE7 45#define DASD_ECKD_CCW_PFX_READ 0xEA 46#define DASD_ECKD_CCW_RSCK 0xF9 47 48/* 49 * Perform Subsystem Function / Sub-Orders 50 */ 51#define PSF_ORDER_PRSSD 0x18 52#define PSF_ORDER_SSC 0x1D 53 54/* 55 * Size that is reportet for large volumes in the old 16-bit no_cyl field 56 */ 57#define LV_COMPAT_CYL 0xFFFE 58 59/***************************************************************************** 60 * SECTION: Type Definitions 61 ****************************************************************************/ 62 63struct eckd_count { 64 __u16 cyl; 65 __u16 head; 66 __u8 record; 67 __u8 kl; 68 __u16 dl; 69} __attribute__ ((packed)); 70 71struct ch_t { 72 __u16 cyl; 73 __u16 head; 74} __attribute__ ((packed)); 75 76struct chs_t { 77 __u16 cyl; 78 __u16 head; 79 __u32 sector; 80} __attribute__ ((packed)); 81 82struct chr_t { 83 __u16 cyl; 84 __u16 head; 85 __u8 record; 86} __attribute__ ((packed)); 87 88struct geom_t { 89 __u16 cyl; 90 __u16 head; 91 __u32 sector; 92} __attribute__ ((packed)); 93 94struct eckd_home { 95 __u8 skip_control[14]; 96 __u16 cell_number; 97 __u8 physical_addr[3]; 98 __u8 flag; 99 struct ch_t track_addr; 100 __u8 reserved; 101 __u8 key_length; 102 __u8 reserved2[2]; 103} __attribute__ ((packed)); 104 105struct DE_eckd_data { 106 struct { 107 unsigned char perm:2; /* Permissions on this extent */ 108 unsigned char reserved:1; 109 unsigned char seek:2; /* Seek control */ 110 unsigned char auth:2; /* Access authorization */ 111 unsigned char pci:1; /* PCI Fetch mode */ 112 } __attribute__ ((packed)) mask; 113 struct { 114 unsigned char mode:2; /* Architecture mode */ 115 unsigned char ckd:1; /* CKD Conversion */ 116 unsigned char operation:3; /* Operation mode */ 117 unsigned char cfw:1; /* Cache fast write */ 118 unsigned char dfw:1; /* DASD fast write */ 119 } __attribute__ ((packed)) attributes; 120 __u16 blk_size; /* Blocksize */ 121 __u16 fast_write_id; 122 __u8 ga_additional; /* Global Attributes Additional */ 123 __u8 ga_extended; /* Global Attributes Extended */ 124 struct ch_t beg_ext; 125 struct ch_t end_ext; 126 unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */ 127 __u8 ep_format; /* Extended Parameter format byte */ 128 __u8 ep_prio; /* Extended Parameter priority I/O byte */ 129 __u8 ep_reserved1; /* Extended Parameter Reserved */ 130 __u8 ep_rec_per_track; /* Number of records on a track */ 131 __u8 ep_reserved[4]; /* Extended Parameter Reserved */ 132} __attribute__ ((packed)); 133 134struct LO_eckd_data { 135 struct { 136 unsigned char orientation:2; 137 unsigned char operation:6; 138 } __attribute__ ((packed)) operation; 139 struct { 140 unsigned char last_bytes_used:1; 141 unsigned char reserved:6; 142 unsigned char read_count_suffix:1; 143 } __attribute__ ((packed)) auxiliary; 144 __u8 unused; 145 __u8 count; 146 struct ch_t seek_addr; 147 struct chr_t search_arg; 148 __u8 sector; 149 __u16 length; 150} __attribute__ ((packed)); 151 152struct LRE_eckd_data { 153 struct { 154 unsigned char orientation:2; 155 unsigned char operation:6; 156 } __attribute__ ((packed)) operation; 157 struct { 158 unsigned char length_valid:1; 159 unsigned char length_scope:1; 160 unsigned char imbedded_ccw_valid:1; 161 unsigned char check_bytes:2; 162 unsigned char imbedded_count_valid:1; 163 unsigned char reserved:1; 164 unsigned char read_count_suffix:1; 165 } __attribute__ ((packed)) auxiliary; 166 __u8 imbedded_ccw; 167 __u8 count; 168 struct ch_t seek_addr; 169 struct chr_t search_arg; 170 __u8 sector; 171 __u16 length; 172 __u8 imbedded_count; 173 __u8 extended_operation; 174 __u16 extended_parameter_length; 175 __u8 extended_parameter[0]; 176} __attribute__ ((packed)); 177 178/* Prefix data for format 0x00 and 0x01 */ 179struct PFX_eckd_data { 180 unsigned char format; 181 struct { 182 unsigned char define_extent:1; 183 unsigned char time_stamp:1; 184 unsigned char verify_base:1; 185 unsigned char hyper_pav:1; 186 unsigned char reserved:4; 187 } __attribute__ ((packed)) validity; 188 __u8 base_address; 189 __u8 aux; 190 __u8 base_lss; 191 __u8 reserved[7]; 192 struct DE_eckd_data define_extent; 193 struct LRE_eckd_data locate_record; 194} __attribute__ ((packed)); 195 196struct dasd_eckd_characteristics { 197 __u16 cu_type; 198 struct { 199 unsigned char support:2; 200 unsigned char async:1; 201 unsigned char reserved:1; 202 unsigned char cache_info:1; 203 unsigned char model:3; 204 } __attribute__ ((packed)) cu_model; 205 __u16 dev_type; 206 __u8 dev_model; 207 struct { 208 unsigned char mult_burst:1; 209 unsigned char RT_in_LR:1; 210 unsigned char reserved1:1; 211 unsigned char RD_IN_LR:1; 212 unsigned char reserved2:4; 213 unsigned char reserved3:8; 214 unsigned char defect_wr:1; 215 unsigned char XRC_supported:1; 216 unsigned char reserved4:1; 217 unsigned char striping:1; 218 unsigned char reserved5:4; 219 unsigned char cfw:1; 220 unsigned char reserved6:2; 221 unsigned char cache:1; 222 unsigned char dual_copy:1; 223 unsigned char dfw:1; 224 unsigned char reset_alleg:1; 225 unsigned char sense_down:1; 226 } __attribute__ ((packed)) facilities; 227 __u8 dev_class; 228 __u8 unit_type; 229 __u16 no_cyl; 230 __u16 trk_per_cyl; 231 __u8 sec_per_trk; 232 __u8 byte_per_track[3]; 233 __u16 home_bytes; 234 __u8 formula; 235 union { 236 struct { 237 __u8 f1; 238 __u16 f2; 239 __u16 f3; 240 } __attribute__ ((packed)) f_0x01; 241 struct { 242 __u8 f1; 243 __u8 f2; 244 __u8 f3; 245 __u8 f4; 246 __u8 f5; 247 } __attribute__ ((packed)) f_0x02; 248 } __attribute__ ((packed)) factors; 249 __u16 first_alt_trk; 250 __u16 no_alt_trk; 251 __u16 first_dia_trk; 252 __u16 no_dia_trk; 253 __u16 first_sup_trk; 254 __u16 no_sup_trk; 255 __u8 MDR_ID; 256 __u8 OBR_ID; 257 __u8 director; 258 __u8 rd_trk_set; 259 __u16 max_rec_zero; 260 __u8 reserved1; 261 __u8 RWANY_in_LR; 262 __u8 factor6; 263 __u8 factor7; 264 __u8 factor8; 265 __u8 reserved2[3]; 266 __u8 reserved3[6]; 267 __u32 long_no_cyl; 268} __attribute__ ((packed)); 269 270/* elements of the configuration data */ 271struct dasd_ned { 272 struct { 273 __u8 identifier:2; 274 __u8 token_id:1; 275 __u8 sno_valid:1; 276 __u8 subst_sno:1; 277 __u8 recNED:1; 278 __u8 emuNED:1; 279 __u8 reserved:1; 280 } __attribute__ ((packed)) flags; 281 __u8 descriptor; 282 __u8 dev_class; 283 __u8 reserved; 284 __u8 dev_type[6]; 285 __u8 dev_model[3]; 286 __u8 HDA_manufacturer[3]; 287 __u8 HDA_location[2]; 288 __u8 HDA_seqno[12]; 289 __u8 ID; 290 __u8 unit_addr; 291} __attribute__ ((packed)); 292 293struct dasd_sneq { 294 struct { 295 __u8 identifier:2; 296 __u8 reserved:6; 297 } __attribute__ ((packed)) flags; 298 __u8 res1; 299 __u16 format; 300 __u8 res2[4]; /* byte 4- 7 */ 301 __u8 sua_flags; /* byte 8 */ 302 __u8 base_unit_addr; /* byte 9 */ 303 __u8 res3[22]; /* byte 10-31 */ 304} __attribute__ ((packed)); 305 306struct vd_sneq { 307 struct { 308 __u8 identifier:2; 309 __u8 reserved:6; 310 } __attribute__ ((packed)) flags; 311 __u8 res1; 312 __u16 format; 313 __u8 res2[4]; /* byte 4- 7 */ 314 __u8 uit[16]; /* byte 8-23 */ 315 __u8 res3[8]; /* byte 24-31 */ 316} __attribute__ ((packed)); 317 318struct dasd_gneq { 319 struct { 320 __u8 identifier:2; 321 __u8 reserved:6; 322 } __attribute__ ((packed)) flags; 323 __u8 reserved[7]; 324 __u16 subsystemID; 325 __u8 reserved2[22]; 326} __attribute__ ((packed)); 327 328struct dasd_eckd_path { 329 __u8 opm; 330 __u8 ppm; 331 __u8 npm; 332}; 333 334struct dasd_rssd_features { 335 char feature[256]; 336} __attribute__((packed)); 337 338 339/* 340 * Perform Subsystem Function - Prepare for Read Subsystem Data 341 */ 342struct dasd_psf_prssd_data { 343 unsigned char order; 344 unsigned char flags; 345 unsigned char reserved[4]; 346 unsigned char suborder; 347 unsigned char varies[5]; 348} __attribute__ ((packed)); 349 350/* 351 * Perform Subsystem Function - Set Subsystem Characteristics 352 */ 353struct dasd_psf_ssc_data { 354 unsigned char order; 355 unsigned char flags; 356 unsigned char cu_type[4]; 357 unsigned char suborder; 358 unsigned char reserved[59]; 359} __attribute__((packed)); 360 361 362/* 363 * some structures and definitions for alias handling 364 */ 365struct dasd_unit_address_configuration { 366 struct { 367 char ua_type; 368 char base_ua; 369 } unit[256]; 370} __attribute__((packed)); 371 372 373#define MAX_DEVICES_PER_LCU 256 374 375/* flags on the LCU */ 376#define NEED_UAC_UPDATE 0x01 377#define UPDATE_PENDING 0x02 378 379enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV}; 380 381 382struct alias_root { 383 struct list_head serverlist; 384 spinlock_t lock; 385}; 386 387struct alias_server { 388 struct list_head server; 389 struct dasd_uid uid; 390 struct list_head lculist; 391}; 392 393struct summary_unit_check_work_data { 394 char reason; 395 struct dasd_device *device; 396 struct work_struct worker; 397}; 398 399struct read_uac_work_data { 400 struct dasd_device *device; 401 struct delayed_work dwork; 402}; 403 404struct alias_lcu { 405 struct list_head lcu; 406 struct dasd_uid uid; 407 enum pavtype pav; 408 char flags; 409 spinlock_t lock; 410 struct list_head grouplist; 411 struct list_head active_devices; 412 struct list_head inactive_devices; 413 struct dasd_unit_address_configuration *uac; 414 struct summary_unit_check_work_data suc_data; 415 struct read_uac_work_data ruac_data; 416 struct dasd_ccw_req *rsu_cqr; 417}; 418 419struct alias_pav_group { 420 struct list_head group; 421 struct dasd_uid uid; 422 struct alias_lcu *lcu; 423 struct list_head baselist; 424 struct list_head aliaslist; 425 struct dasd_device *next; 426}; 427 428 429struct dasd_eckd_private { 430 struct dasd_eckd_characteristics rdc_data; 431 u8 *conf_data; 432 int conf_len; 433 /* pointers to specific parts in the conf_data */ 434 struct dasd_ned *ned; 435 struct dasd_sneq *sneq; 436 struct vd_sneq *vdsneq; 437 struct dasd_gneq *gneq; 438 439 struct dasd_eckd_path path_data; 440 struct eckd_count count_area[5]; 441 int init_cqr_status; 442 int uses_cdl; 443 struct attrib_data_t attrib; /* e.g. cache operations */ 444 struct dasd_rssd_features features; 445 u32 real_cyl; 446 447 /* alias managemnet */ 448 struct dasd_uid uid; 449 struct alias_pav_group *pavgroup; 450 struct alias_lcu *lcu; 451 int count; 452}; 453 454 455 456int dasd_alias_make_device_known_to_lcu(struct dasd_device *); 457void dasd_alias_disconnect_device_from_lcu(struct dasd_device *); 458int dasd_alias_add_device(struct dasd_device *); 459int dasd_alias_remove_device(struct dasd_device *); 460struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *); 461void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *); 462void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *); 463 464#endif /* DASD_ECKD_H */ 465