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138c014d | 1 | /* |
1da177e4 LT |
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 | * | |
1da177e4 LT |
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 */ |