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3a2f7427fe
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:
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||
|---|---|---|
| .. | ||
| pc | ||
| _limits.h | ||
| ansi.h | ||
| asmacros.h | ||
| cons.h | ||
| console.h | ||
| cpu.h | ||
| cpufunc.h | ||
| cputypes.h | ||
| db_machdep.h | ||
| dkio.h | ||
| eflags.h | ||
| endian.h | ||
| exec.h | ||
| float.h | ||
| floatingpoint.h | ||
| frame.h | ||
| ieeefp.h | ||
| ioctl_fd.h | ||
| ioctl_pc.h | ||
| ipl.h | ||
| limits.h | ||
| lpt.h | ||
| mouse.h | ||
| mtpr.h | ||
| npx.h | ||
| param.h | ||
| pcaudioio.h | ||
| pcb.h | ||
| pio.h | ||
| pmap.h | ||
| proc.h | ||
| profile.h | ||
| psl.h | ||
| pte.h | ||
| ptrace.h | ||
| reg.h | ||
| reloc.h | ||
| segments.h | ||
| signal.h | ||
| soundcard.h | ||
| speaker.h | ||
| specialreg.h | ||
| spl.h | ||
| stdarg.h | ||
| sysarch.h | ||
| trap.h | ||
| tss.h | ||
| types.h | ||
| ultrasound.h | ||
| varargs.h | ||
| vmparam.h | ||