| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> |
| * Bugreports.to..: <Linux390@de.ibm.com> |
| * Copyright IBM Corp. 1999, 2000 |
| * |
| */ |
| |
| #ifndef DASD_FBA_H |
| #define DASD_FBA_H |
| |
| /* |
| * Maximum number of blocks to be chained |
| */ |
| #define DASD_FBA_MAX_BLOCKS 96 |
| |
| 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 */ |
