/* * File...........: linux/drivers/s390/block/dasd_fba.h * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> * Bugreports.to..: <Linux390@de.ibm.com> * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 * */ #ifndef DASD_FBA_H #define DASD_FBA_H struct DE_fba_data { struct { unsigned char perm:2; /* Permissions on this extent */ unsigned char zero:2; /* Must be zero */ unsigned char da:1; /* usually zero */ unsigned char diag:1; /* allow diagnose */ unsigned char zero2:2; /* zero */ } __attribute__ ((packed)) mask; __u8 zero; /* Must be zero */ __u16 blk_size; /* Blocksize */ __u32 ext_loc; /* Extent locator */ __u32 ext_beg; /* logical number of block 0 in extent */ __u32 ext_end; /* logocal number of last block in extent */ } __attribute__ ((packed)); struct LO_fba_data { struct { unsigned char zero:4; unsigned char cmd:4; } __attribute__ ((packed)) operation; __u8 auxiliary; __u16 blk_ct; __u32 blk_nr; } __attribute__ ((packed)); struct dasd_fba_characteristics { union { __u8 c; struct { unsigned char reserved:1; unsigned char overrunnable:1; unsigned char burst_byte:1; unsigned char data_chain:1; unsigned char zeros:4; } __attribute__ ((packed)) bits; } __attribute__ ((packed)) mode; union { __u8 c; struct { unsigned char zero0:1; unsigned char removable:1; unsigned char shared:1; unsigned char zero1:1; unsigned char mam:1; unsigned char zeros:3; } __attribute__ ((packed)) bits; } __attribute__ ((packed)) features; __u8 dev_class; __u8 unit_type; __u16 blk_size; __u32 blk_per_cycl; __u32 blk_per_bound; __u32 blk_bdsa; __u32 reserved0; __u16 reserved1; __u16 blk_ce; __u32 reserved2; __u16 reserved3; } __attribute__ ((packed)); #endif /* DASD_FBA_H */