Commit Graph

21 Commits

Author SHA1 Message Date
Tor Egge
d66c374f58 Enable the FIFO on enhanced floppy controllers. This reduces the
number of dma overruns/underruns for systems under heavy dma load.
As a side effect, broken enhanced floppy controllers that sometimes
don't detect dma overruns/underruns will give less errors.

Reviewed by:	j@uriah.heep.sax.de (J Wunsch)
1997-09-17 20:16:17 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
John Hay
21b4a6992c A #define really don't need a ; at the end. 1996-10-28 19:35:37 +00:00
Satoshi Asami
0e408c25a1 Another round of merge/update.
(1) Add PC98 support to apm_bios.h and ns16550.h, remove pc98/pc98/ic
(2) Move PC98 specific code out of cpufunc.h (to pc98.h)
(3) Let the boot subtrees look more alike

Submitted by:	The FreeBSD(98) Development Team
		<freebsd98-hackers@jp.freebsd.org>
1996-09-12 11:12:18 +00:00
Peter Wemm
fe63158271 Changes to the Digi/Arnet SYNC driver:
1. Create 2 x 8k transmit buffer blocks in place of the 16k block previously.
   With this change the speed as tested with ttcp on a 2Mbit link went up
   from 206kbyte/s to 236kbyte/s.
2. Change the rest of the functions to also have the definition of the
   return value on a sepperate line.
3. Remove some unused variables.
4. Add code to recover from DMA underruns.
5. Reorder ar_get_packets() to handle errors better.
6. Only allocate a mbuf cluster if the data is more than the mbuf.

(and in a second diff in addition to the above)
7. Stops the occasional DMA underruns that occurred when 2 channels
   are running at 2Mbit/s.

Submitted by: John Hay <jhay@mikom.csir.co.za>
1996-03-17 00:29:35 +00:00
Bruce Evans
2c28d76196 Oops, this should have been committed with the other Hayes ESP changes. 1995-12-29 13:18:58 +00:00
Peter Wemm
cc9fce5ad7 This driver supports the Arnet SYNC/570i ISA cards that is based on the
HD64570 chip. Both the 2 and 4 port cards is supported and auto detected.

Line speeds of up to 2Mbps is possible. At this speed about 85% of the
bandwidth is usable with 486DX processors.

The standard FreeBSD sppp code is used for the link level layer. The
default protocol used is PPP. The Cisco HDLC protocol can be used by
adding "link2" to the ifconfig line in /etc/sysconfig or where ever
ifconfig is run.

At the moment only the V.35 and X.21 interfaces is supported. The others
may need tweaks to the clock selection code.

Submitted by: John Hay <jhay@mikom.csir.co.za>
1995-11-21 02:32:04 +00:00
Bruce Evans
c5d1682b14 Staticized an inline function. All inlines in kernel headers should be
static.  The function shouldn't be here anyway.  It is driver dependent,
while `ic' files are supposed to only depend on the IC.
1995-11-18 08:12:30 +00:00
Poul-Henning Kamp
c227cb3456 Cleanup, make things static. 1995-10-31 18:41:49 +00:00
Bruce Evans
94ec1fba9a Rewrite:
- use pseudo-dma
- provide the same features and interface as sio
- support multiple boards
- fix bugs.

Some compile-time configuration constants are set to support higher
speeds and Cyclom-16Y's at a 30% relative cost in efficiency.
Cyclom-16Y support is untested.
1995-07-05 12:15:52 +00:00
Andrey A. Chernov
ae39e7ee16 Next version, many bugs fixed 1995-06-14 19:37:02 +00:00
Rodney W. Grimes
9b2e535452 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
Andrey A. Chernov
dc02f1c279 RISCom/8 driver 1995-05-12 15:09:29 +00:00
Jordan K. Hubbard
cfc9f6212d Add the Cyclades serial driver code (ALPHA) from Andrew Werple and
adapted to FreeBSD by Heikki Suonsivu <hsu@cs.hut.fi>.
Submitted by:	Andrew Werple <andrew@werple.apana.org.au> and
		Heikki Suonsivu <hsu@cs.hut.fi>
Obtained from:	NetBSD
1995-02-09 09:47:31 +00:00
Joerg Wunsch
dc5df763e4 Peter's work to work around one of the most annoying bugs in the
floppy driver (or in the hardware?).  It turned out to be caused by
spurious interrupts, right after an FDC reset.

Also major cleanup in the low-level structure, there are now functions
performing error-checks for the FDC I/O.

Submitted by:	(mostly) Peter Dufault <dufault@FreeBSD.org>
1995-01-06 15:20:00 +00:00
Andrey A. Chernov
0c9159ecd7 DMA automode patch, fix SB16 clicks
Submitted by: tim@cs.city.ac.uk
1994-11-01 17:26:50 +00:00
David Greenman
3a2f7427fe 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:
1994-09-17 16:56:10 +00:00
Rodney W. Grimes
6f78ca6026 Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some
minor cleanup.  Added $Id$ to files that did not have any version info, etc
1993-10-16 13:48:52 +00:00
Rodney W. Grimes
963a0adea5 i82586 support file for Garrett Wollmans ie driver 1993-10-12 06:53:10 +00:00
Rodney W. Grimes
5b81b6b301 Initial import, 0.1 + pk 0.2.4-B1 1993-06-12 14:58:17 +00:00