diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-10-12 15:05:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-12 15:05:39 +0200 |
| commit | a9b9e81c915e4a57ac3b21d1a7fa7ff184639780 (patch) | |
| tree | 98304395fbb5b9c74fca35b196cd414c1949f280 /include/linux/fd.h | |
| parent | a8b71a2810386a5ac8f43d2095fe3355f0d8db37 (diff) | |
| parent | fd048088306656824958e7783ffcee27e241b361 (diff) | |
Merge branch 'linus' into x86/memory-corruption-check
Diffstat (limited to 'include/linux/fd.h')
| -rw-r--r-- | include/linux/fd.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/fd.h b/include/linux/fd.h index b6bd41d2b460..f5d194af07a8 100644 --- a/include/linux/fd.h +++ b/include/linux/fd.h @@ -15,10 +15,16 @@ struct floppy_struct { sect, /* sectors per track */ head, /* nr of heads */ track, /* nr of tracks */ - stretch; /* !=0 means double track steps */ + stretch; /* bit 0 !=0 means double track steps */ + /* bit 1 != 0 means swap sides */ + /* bits 2..9 give the first sector */ + /* number (the LSB is flipped) */ #define FD_STRETCH 1 #define FD_SWAPSIDES 2 #define FD_ZEROBASED 4 +#define FD_SECTBASEMASK 0x3FC +#define FD_MKSECTBASE(s) (((s) ^ 1) << 2) +#define FD_SECTBASE(floppy) ((((floppy)->stretch & FD_SECTBASEMASK) >> 2) ^ 1) unsigned char gap, /* gap1 size */ |