1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> 41da177e4SLinus Torvalds * Bugreports.to..: <Linux390@de.ibm.com> 5a53c8fabSHeiko Carstens * Coypright IBM Corp. 1999, 2000 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds #ifndef DASD_FBA_H 101da177e4SLinus Torvalds #define DASD_FBA_H 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds struct DE_fba_data { 131da177e4SLinus Torvalds struct { 141da177e4SLinus Torvalds unsigned char perm:2; /* Permissions on this extent */ 151da177e4SLinus Torvalds unsigned char zero:2; /* Must be zero */ 161da177e4SLinus Torvalds unsigned char da:1; /* usually zero */ 171da177e4SLinus Torvalds unsigned char diag:1; /* allow diagnose */ 181da177e4SLinus Torvalds unsigned char zero2:2; /* zero */ 191da177e4SLinus Torvalds } __attribute__ ((packed)) mask; 201da177e4SLinus Torvalds __u8 zero; /* Must be zero */ 211da177e4SLinus Torvalds __u16 blk_size; /* Blocksize */ 221da177e4SLinus Torvalds __u32 ext_loc; /* Extent locator */ 231da177e4SLinus Torvalds __u32 ext_beg; /* logical number of block 0 in extent */ 241da177e4SLinus Torvalds __u32 ext_end; /* logocal number of last block in extent */ 251da177e4SLinus Torvalds } __attribute__ ((packed)); 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds struct LO_fba_data { 281da177e4SLinus Torvalds struct { 291da177e4SLinus Torvalds unsigned char zero:4; 301da177e4SLinus Torvalds unsigned char cmd:4; 311da177e4SLinus Torvalds } __attribute__ ((packed)) operation; 321da177e4SLinus Torvalds __u8 auxiliary; 331da177e4SLinus Torvalds __u16 blk_ct; 341da177e4SLinus Torvalds __u32 blk_nr; 351da177e4SLinus Torvalds } __attribute__ ((packed)); 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds struct dasd_fba_characteristics { 381da177e4SLinus Torvalds union { 391da177e4SLinus Torvalds __u8 c; 401da177e4SLinus Torvalds struct { 411da177e4SLinus Torvalds unsigned char reserved:1; 421da177e4SLinus Torvalds unsigned char overrunnable:1; 431da177e4SLinus Torvalds unsigned char burst_byte:1; 441da177e4SLinus Torvalds unsigned char data_chain:1; 451da177e4SLinus Torvalds unsigned char zeros:4; 461da177e4SLinus Torvalds } __attribute__ ((packed)) bits; 471da177e4SLinus Torvalds } __attribute__ ((packed)) mode; 481da177e4SLinus Torvalds union { 491da177e4SLinus Torvalds __u8 c; 501da177e4SLinus Torvalds struct { 511da177e4SLinus Torvalds unsigned char zero0:1; 521da177e4SLinus Torvalds unsigned char removable:1; 531da177e4SLinus Torvalds unsigned char shared:1; 541da177e4SLinus Torvalds unsigned char zero1:1; 551da177e4SLinus Torvalds unsigned char mam:1; 561da177e4SLinus Torvalds unsigned char zeros:3; 571da177e4SLinus Torvalds } __attribute__ ((packed)) bits; 581da177e4SLinus Torvalds } __attribute__ ((packed)) features; 591da177e4SLinus Torvalds __u8 dev_class; 601da177e4SLinus Torvalds __u8 unit_type; 611da177e4SLinus Torvalds __u16 blk_size; 621da177e4SLinus Torvalds __u32 blk_per_cycl; 631da177e4SLinus Torvalds __u32 blk_per_bound; 641da177e4SLinus Torvalds __u32 blk_bdsa; 651da177e4SLinus Torvalds __u32 reserved0; 661da177e4SLinus Torvalds __u16 reserved1; 671da177e4SLinus Torvalds __u16 blk_ce; 681da177e4SLinus Torvalds __u32 reserved2; 691da177e4SLinus Torvalds __u16 reserved3; 701da177e4SLinus Torvalds } __attribute__ ((packed)); 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds #endif /* DASD_FBA_H */ 73