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77 lines
1.8 KiB
77 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Author(s)......: Holger Smolinski <[email protected]> |
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* Bugreports.to..: <[email protected]> |
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* Copyright IBM Corp. 1999, 2000 |
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* |
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*/ |
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#ifndef DASD_FBA_H |
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#define DASD_FBA_H |
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/* |
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* Maximum number of blocks to be chained |
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*/ |
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#define DASD_FBA_MAX_BLOCKS 96 |
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struct DE_fba_data { |
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struct { |
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unsigned char perm:2; /* Permissions on this extent */ |
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unsigned char zero:2; /* Must be zero */ |
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unsigned char da:1; /* usually zero */ |
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unsigned char diag:1; /* allow diagnose */ |
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unsigned char zero2:2; /* zero */ |
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} __attribute__ ((packed)) mask; |
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__u8 zero; /* Must be zero */ |
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__u16 blk_size; /* Blocksize */ |
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__u32 ext_loc; /* Extent locator */ |
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__u32 ext_beg; /* logical number of block 0 in extent */ |
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__u32 ext_end; /* logocal number of last block in extent */ |
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} __attribute__ ((packed)); |
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struct LO_fba_data { |
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struct { |
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unsigned char zero:4; |
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unsigned char cmd:4; |
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} __attribute__ ((packed)) operation; |
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__u8 auxiliary; |
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__u16 blk_ct; |
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__u32 blk_nr; |
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} __attribute__ ((packed)); |
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struct dasd_fba_characteristics { |
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union { |
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__u8 c; |
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struct { |
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unsigned char reserved:1; |
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unsigned char overrunnable:1; |
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unsigned char burst_byte:1; |
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unsigned char data_chain:1; |
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unsigned char zeros:4; |
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} __attribute__ ((packed)) bits; |
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} __attribute__ ((packed)) mode; |
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union { |
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__u8 c; |
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struct { |
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unsigned char zero0:1; |
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unsigned char removable:1; |
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unsigned char shared:1; |
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unsigned char zero1:1; |
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unsigned char mam:1; |
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unsigned char zeros:3; |
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} __attribute__ ((packed)) bits; |
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} __attribute__ ((packed)) features; |
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__u8 dev_class; |
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__u8 unit_type; |
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__u16 blk_size; |
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__u32 blk_per_cycl; |
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__u32 blk_per_bound; |
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__u32 blk_bdsa; |
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__u32 reserved0; |
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__u16 reserved1; |
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__u16 blk_ce; |
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__u32 reserved2; |
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__u16 reserved3; |
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} __attribute__ ((packed)); |
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#endif /* DASD_FBA_H */
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