11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * File...........: linux/drivers/s390/block/dasd_fba.h 31da177e4SLinus Torvalds * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> 41da177e4SLinus Torvalds * Bugreports.to..: <Linux390@de.ibm.com> 51da177e4SLinus Torvalds * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * $Revision: 1.6 $ 81da177e4SLinus Torvalds */ 91da177e4SLinus Torvalds 101da177e4SLinus Torvalds #ifndef DASD_FBA_H 111da177e4SLinus Torvalds #define DASD_FBA_H 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds struct DE_fba_data { 141da177e4SLinus Torvalds struct { 151da177e4SLinus Torvalds unsigned char perm:2; /* Permissions on this extent */ 161da177e4SLinus Torvalds unsigned char zero:2; /* Must be zero */ 171da177e4SLinus Torvalds unsigned char da:1; /* usually zero */ 181da177e4SLinus Torvalds unsigned char diag:1; /* allow diagnose */ 191da177e4SLinus Torvalds unsigned char zero2:2; /* zero */ 201da177e4SLinus Torvalds } __attribute__ ((packed)) mask; 211da177e4SLinus Torvalds __u8 zero; /* Must be zero */ 221da177e4SLinus Torvalds __u16 blk_size; /* Blocksize */ 231da177e4SLinus Torvalds __u32 ext_loc; /* Extent locator */ 241da177e4SLinus Torvalds __u32 ext_beg; /* logical number of block 0 in extent */ 251da177e4SLinus Torvalds __u32 ext_end; /* logocal number of last block in extent */ 261da177e4SLinus Torvalds } __attribute__ ((packed)); 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds struct LO_fba_data { 291da177e4SLinus Torvalds struct { 301da177e4SLinus Torvalds unsigned char zero:4; 311da177e4SLinus Torvalds unsigned char cmd:4; 321da177e4SLinus Torvalds } __attribute__ ((packed)) operation; 331da177e4SLinus Torvalds __u8 auxiliary; 341da177e4SLinus Torvalds __u16 blk_ct; 351da177e4SLinus Torvalds __u32 blk_nr; 361da177e4SLinus Torvalds } __attribute__ ((packed)); 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds struct dasd_fba_characteristics { 391da177e4SLinus Torvalds union { 401da177e4SLinus Torvalds __u8 c; 411da177e4SLinus Torvalds struct { 421da177e4SLinus Torvalds unsigned char reserved:1; 431da177e4SLinus Torvalds unsigned char overrunnable:1; 441da177e4SLinus Torvalds unsigned char burst_byte:1; 451da177e4SLinus Torvalds unsigned char data_chain:1; 461da177e4SLinus Torvalds unsigned char zeros:4; 471da177e4SLinus Torvalds } __attribute__ ((packed)) bits; 481da177e4SLinus Torvalds } __attribute__ ((packed)) mode; 491da177e4SLinus Torvalds union { 501da177e4SLinus Torvalds __u8 c; 511da177e4SLinus Torvalds struct { 521da177e4SLinus Torvalds unsigned char zero0:1; 531da177e4SLinus Torvalds unsigned char removable:1; 541da177e4SLinus Torvalds unsigned char shared:1; 551da177e4SLinus Torvalds unsigned char zero1:1; 561da177e4SLinus Torvalds unsigned char mam:1; 571da177e4SLinus Torvalds unsigned char zeros:3; 581da177e4SLinus Torvalds } __attribute__ ((packed)) bits; 591da177e4SLinus Torvalds } __attribute__ ((packed)) features; 601da177e4SLinus Torvalds __u8 dev_class; 611da177e4SLinus Torvalds __u8 unit_type; 621da177e4SLinus Torvalds __u16 blk_size; 631da177e4SLinus Torvalds __u32 blk_per_cycl; 641da177e4SLinus Torvalds __u32 blk_per_bound; 651da177e4SLinus Torvalds __u32 blk_bdsa; 661da177e4SLinus Torvalds __u32 reserved0; 671da177e4SLinus Torvalds __u16 reserved1; 681da177e4SLinus Torvalds __u16 blk_ce; 691da177e4SLinus Torvalds __u32 reserved2; 701da177e4SLinus Torvalds __u16 reserved3; 711da177e4SLinus Torvalds } __attribute__ ((packed)); 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds #endif /* DASD_FBA_H */ 74