| Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1 | /* |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * File...........: linux/drivers/s390/block/dasd_fba.h |
| 3 | * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> |
| 4 | * Bugreports.to..: <Linux390@de.ibm.com> |
| 5 | * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 |
| 6 | * |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #ifndef DASD_FBA_H |
| 10 | #define DASD_FBA_H |
| 11 | |
| 12 | struct DE_fba_data { |
| 13 | struct { |
| 14 | unsigned char perm:2; /* Permissions on this extent */ |
| 15 | unsigned char zero:2; /* Must be zero */ |
| 16 | unsigned char da:1; /* usually zero */ |
| 17 | unsigned char diag:1; /* allow diagnose */ |
| 18 | unsigned char zero2:2; /* zero */ |
| 19 | } __attribute__ ((packed)) mask; |
| 20 | __u8 zero; /* Must be zero */ |
| 21 | __u16 blk_size; /* Blocksize */ |
| 22 | __u32 ext_loc; /* Extent locator */ |
| 23 | __u32 ext_beg; /* logical number of block 0 in extent */ |
| 24 | __u32 ext_end; /* logocal number of last block in extent */ |
| 25 | } __attribute__ ((packed)); |
| 26 | |
| 27 | struct LO_fba_data { |
| 28 | struct { |
| 29 | unsigned char zero:4; |
| 30 | unsigned char cmd:4; |
| 31 | } __attribute__ ((packed)) operation; |
| 32 | __u8 auxiliary; |
| 33 | __u16 blk_ct; |
| 34 | __u32 blk_nr; |
| 35 | } __attribute__ ((packed)); |
| 36 | |
| 37 | struct dasd_fba_characteristics { |
| 38 | union { |
| 39 | __u8 c; |
| 40 | struct { |
| 41 | unsigned char reserved:1; |
| 42 | unsigned char overrunnable:1; |
| 43 | unsigned char burst_byte:1; |
| 44 | unsigned char data_chain:1; |
| 45 | unsigned char zeros:4; |
| 46 | } __attribute__ ((packed)) bits; |
| 47 | } __attribute__ ((packed)) mode; |
| 48 | union { |
| 49 | __u8 c; |
| 50 | struct { |
| 51 | unsigned char zero0:1; |
| 52 | unsigned char removable:1; |
| 53 | unsigned char shared:1; |
| 54 | unsigned char zero1:1; |
| 55 | unsigned char mam:1; |
| 56 | unsigned char zeros:3; |
| 57 | } __attribute__ ((packed)) bits; |
| 58 | } __attribute__ ((packed)) features; |
| 59 | __u8 dev_class; |
| 60 | __u8 unit_type; |
| 61 | __u16 blk_size; |
| 62 | __u32 blk_per_cycl; |
| 63 | __u32 blk_per_bound; |
| 64 | __u32 blk_bdsa; |
| 65 | __u32 reserved0; |
| 66 | __u16 reserved1; |
| 67 | __u16 blk_ce; |
| 68 | __u32 reserved2; |
| 69 | __u16 reserved3; |
| 70 | } __attribute__ ((packed)); |
| 71 | |
| 72 | #endif /* DASD_FBA_H */ |