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author | dg <dg@FreeBSD.org> | 1994-09-17 16:56:10 +0000 |
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committer | dg <dg@FreeBSD.org> | 1994-09-17 16:56:10 +0000 |
commit | 0285e6bafcab4b972c40c1d78ac266295dc5d80f (patch) | |
tree | 04e7afb126a8687648474c1e093925c58ebecf67 /sys/isa/fdreg.h | |
parent | 2097dca3f5f4524ecf441dae533fcf5ee46c98c2 (diff) | |
download | FreeBSD-src-0285e6bafcab4b972c40c1d78ac266295dc5d80f.zip FreeBSD-src-0285e6bafcab4b972c40c1d78ac266295dc5d80f.tar.gz |
Updated driver to the 1.1.5 version:
date: 1994/05/22 12:35:38; author: joerg; state: Exp; lines: +6 -6
First round of floppy changes. Try making `fd' more robust.
New features:
. ioctl command for setting the drive type (density etc.); restricted
to the super-user
. ioctl for getting/seting `drive options'; currently only option
is FDOPT_NORETRY: inhibit the usual retries; used when verifying
a newly formatted track
Fixes:
. function prototypes
. made all internal functions `static'
. cleaned up & corrected .h files
. restructured, to make the chaotic function sequence more rational
. compiled with -Wall, and cleared all warnings
. introduced a mirror for the (write-only) `digital output register',
to avoid the current kludge
. device probing completed by seeking/recalibrating, and looking
for track 0 being found
. holding the controller down in reset state while it is idle (and
thus saving allot of headaches)
. make requests fail that are not a multiple of the (physical)
sector size
. removed the fixed physical sector size (512 bytes), allowing for any
size the controller could handle (128/256/512/1024 bytes)
. replaced some silly messages
. fixed the TRACE* macro usage, debugging reports should be complete
now again (debugging output is HUGE! though)
. removed fd_timeout for SEEK command; seeks are always reported by
the controller to succeed, since the `success' only refers to the
controller's idea of success - there is no hardware line to tell about
the seek end (other than the `track 0' line)
. catch SENSEI's that report about a `terminated due to READY changed'
status - could happen after a controller reset
. converted ``hz / <something>'' divide operations to divisors that are
powers of two, so gcc can optimize them into shifts
. write/format operations are checked against a write-protected medium
now *prior* starting the operation
. error reports of `invalid command' and `wrong cylinder' will cause
shortcuts in the retrier() now
. fixed a bug in the retrier() causing bogus block numbers to be reported
. fdformat() does care for errors now
Known Bugs:
. no attempts have been made (yet) to improve the performance
. sometimes, bogus ``seek/recalib failed'' messages are logged; this
is still a bug in the driver, but it's not harmful since it's
usually caught by the retrier()
Reviewed by:
Submitted by:
Obtained from:
Diffstat (limited to 'sys/isa/fdreg.h')
-rw-r--r-- | sys/isa/fdreg.h | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/sys/isa/fdreg.h b/sys/isa/fdreg.h index d0d69e2..ad5c344 100644 --- a/sys/isa/fdreg.h +++ b/sys/isa/fdreg.h @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)fdreg.h 7.1 (Berkeley) 5/9/91 - * $Id: fdreg.h,v 1.4 1994/02/07 22:12:42 alm Exp $ + * $Id: fdreg.h,v 1.5 1994/08/13 03:49:58 wollman Exp $ */ /* @@ -42,24 +42,26 @@ #include <i386/isa/ic/nec765.h> /* registers */ -#define fdout 2 /* Digital Output Register (W) */ +#define FDOUT 2 /* Digital Output Register (W) */ #define FDO_FDSEL 0x03 /* floppy device select */ #define FDO_FRST 0x04 /* floppy controller reset */ #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ #define FDO_MOEN0 0x10 /* motor enable drive 0 */ #define FDO_MOEN1 0x20 /* motor enable drive 1 */ -#define FDO_MOEN2 0x30 /* motor enable drive 2 */ -#define FDO_MOEN3 0x40 /* motor enable drive 3 */ +#define FDO_MOEN2 0x40 /* motor enable drive 2 */ +#define FDO_MOEN3 0x80 /* motor enable drive 3 */ -#define fdsts 4 /* NEC 765 Main Status Register (R) */ -#define fddata 5 /* NEC 765 Data Register (R/W) */ +#define FDSTS 4 /* NEC 765 Main Status Register (R) */ +#define FDDATA 5 /* NEC 765 Data Register (R/W) */ -#define fdctl 7 /* Control Register (W) */ +#define FDCTL 7 /* Control Register (W) */ #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ + /* for some controllers 1MPBS instead */ -#define fdin 7 /* Digital Input Register (R) */ +#define FDIN 7 /* Digital Input Register (R) */ #define FDI_DCHG 0x80 /* diskette has been changed */ - + /* requires drive and motor being selected */ + /* is cleared by any step pulse to drive */ |