Commit Graph

46 Commits

Author SHA1 Message Date
Warner Losh
098ca2bda9 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
Marcel Moolenaar
43f0d5705e This file was repocopied from sys/dev/uart/uart_dev_z8530.h. 2004-11-21 01:34:15 +00:00
Marcel Moolenaar
caf45b058e This file was repocopied from sys/dev/uart/uart_dev_sab82532.h. 2004-11-21 01:33:39 +00:00
Marcel Moolenaar
4f5d62fbc6 o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are
not used and aliases for other defines.
o  Add REG_DATA as an alias for com_data. Likewise for other register
   defines.
o  Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for
   the other LCR register bits that are known with the CFCR prefix.
o  Add MCR_IE and make MCR_IENABLE an alias for it.
o  Add LSR_TEMT and make LSR_TSRE an alias for it.
o  Add LSR_THRE and make LSR_TXRDY as alias for it.
o  Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for
   the other FCR register bits that are known with the FIFO prefix.
o  Add EFR_CTS and make EFR_AUTOCTS an alias for it.
o  Add EFR_RTS and make EFR_AUTORTS an alias for it.

This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
John Baldwin
b733b2545b Add a header for the i8259A register definitions. This is based on
additions to sys/amd64/isa/icu.h from PIIX4 and other datasheets.  I
tweaked a few comments based on the NetBSD header of the same name when I
merged the constants to sys/i386/isa/icu.h, but the vast majority of this
file was created independently by Peter and not taken from any existing
files.

Submitted by:	peter
2004-01-06 18:59:37 +00:00
Bruce Evans
efcfe95173 Added definitions of most of the interesting 16950 register numbers
and some of their bits (i.e., fifo trigger levels, frequency multipliers
and divisors, and bits to select the registers for these).  This
attempts to completely describe the 16950's complicated register selects
for 16950-specific registers only.
2003-09-16 14:21:17 +00:00
Bruce Evans
fec27f507c Added definitions for some 16650 features (mostly misfeatures). This
completes defining the 16650 register numbers but not all of their bits.
2003-09-16 14:08:54 +00:00
Bruce Evans
2b843bc94b Fixed a minor error in the description of the EFR and a major error in
the description of the data latch registers (they were described as
readonly).

Added some better and worse aliases for standard registers, mostly taken
from the 16950 data sheet.  Define deprecated aliases in terms of the
preferred one.

Don't define com_efr in terms of com_fifo.  It is unrelated (in a
different bank).
2003-09-16 13:52:01 +00:00
Bruce Evans
74814b322a Sorted register numbers together with the correspoding register bits.
Merged comments to match (put them at the right of the #defines instead
of duplicating them).

Sorted the resulting sections on UART type and register bank.  Added a
comment for each bank.
2003-09-16 11:54:29 +00:00
Bruce Evans
86fe87393a Moved the definitions of the bits in the ns*50 registers from sioreg.h
to ns16550.h.  The organization of these files was sort of backwards.
The bits in the registers have no driver or bus dependencies but they
but the offsets of the registers in bus space are very bus-dependent.
However, it does no harm to keep the definitions of the register offsets
in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
Marcel Moolenaar
27d5dc189c The uart(4) driver is an universal driver for various UART hardware.
It improves on sio(4) in the following areas:
o  Fully newbusified to allow for memory mapped I/O. This is a must
   for ia64 and sparc64,
o  Machine dependent code to take full advantage of machine and firm-
   ware specific ways to define serial consoles and/or debug ports.
o  Hardware abstraction layer to allow the driver to be used with
   various UARTs, such as the well-known ns8250 family of UARTs, the
   Siemens sab82532 or the Zilog Z8530. This is especially important
   for pc98 and sparc64 where it's common to have different UARTs,
o  The notion of system devices to unkludge low-level consoles and
   remote gdb ports and provides the mechanics necessary to support
   the keyboard on sparc64 (which is UART based).
o  The notion of a kernel interface so that a UART can be tied to
   something other than the well-known TTY interface. This is needed
   on sparc64 to present the user with a device and ioctl handling
   suitable for a keyboard, but also allows us to cleanly hide an
   UART when used as a debug port.

Following is a list of features and bugs/flaws specific to the ns8250
family of UARTs as compared to their support in sio(4):
o  The uart(4) driver determines the FIFO size and automaticly takes
   advantages of larger FIFOs and/or additional features. Note that
   since I don't have sufficient access to 16[679]5x UARTs, hardware
   flow control has not been enabled. This is almost trivial to do,
   provided one can test. The downside of this is that broken UARTs
   are more likely to not work correctly with uart(4). The need for
   tunables or knobs may be large enough to warrant their creation.
o  The uart(4) driver does not share the same bumpy history as sio(4)
   and will therefore not provide the necessary hooks, tweaks, quirks
   or work-arounds to deal with once common hardware. To that extend,
   uart(4) supports a subset of the UARTs that sio(4) supports. The
   question before us is whether the subset is sufficient for current
   hardware.
o  There is no support for multiport UARTs in uart(4). The decision
   behind this is that uart(4) deals with one EIA RS232-C interface.
   Packaging of multiple interfaces in a single chip or on a single
   expansion board is beyond the scope of uart(4) and is now mostly
   left for puc(4) to deal with. Lack of hardware made it impossible
   to actually implement such a dependency other than is present for
   the dual channel SAB82532 and Z8350 SCCs.

The current list of missing features is:
o  No configuration capabilities. A set of tunables and sysctls is
   being worked out. There are likely not going to be any or much
   compile-time knobs. Such configuration does not fit well with
   current hardware.
o  No support for the PPS API. This is partly dependent on the
   ability to configure uart(4) and partly dependent on having
   sufficient information to implement it properly.

As usual, the manpage is present but lacks the attention the
software has gotten.
2003-09-06 23:13:47 +00:00
Matthew N. Dodd
0e91b7d532 - Clean up function calling conventions.
- Be consistent about what we call our softc.
- Minor formatting.
- Add some register definitions gleaned from NetBSD/Linux.
2003-03-28 06:27:08 +00:00
Poul-Henning Kamp
c8423e9702 Move the com_scr register address definition over with the other seven.
Approved by:	bde
2002-09-22 08:51:31 +00:00
Joerg Wunsch
94896f7b05 Oops, forgot to commit one file in the fd driver mega update. Here it
is, some more constants for NE765 & Co.

Pointed out by: silby, Dave Cornejo <dave@dogwood.com>
2001-12-16 07:52:13 +00:00
Yoshihiro Takahashi
38b70454e3 Moved the wd33c93 specific file to sys/dev/ic. 2001-06-14 11:05:48 +00:00
Yoshihiro Takahashi
50cece92e1 Move the files from i386/isa/ic/ to dev/ic/. 2001-06-10 04:28:39 +00:00
Yoshihiro Takahashi
94a503c92d Added ESP98 specific register (merged from i386/isa/ic/esp.h). 2001-06-10 04:20:37 +00:00
Yoshihiro Takahashi
da0f982b48 Removed unneeded pc98 code (merged from i386/isa/ic/ns16550.h). 2001-06-10 04:18:19 +00:00
Peter Wemm
365c5db0a7 Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Bruce Evans
c151de316a Fixed 10 out of 40 lines of -Wcast-qual warnings/errors. 3 lines were
for old confusion of `volatile char *' with `volatile caddr_t'.  7 lines
were for not being careful about aligning pointers to volatiles.
1999-05-13 12:21:41 +00:00
Bruce Evans
657365cdd7 Implemented sending of BREAKs. This is quite complicated because the
hardware is interrupt-driven to a fault and sending a BREAK requires
mode switching.  Always running in the BREAK-capable mode as in PR 8318
would double the overhead for sending \0's.

Reminded by:	PR 8318
1998-12-17 17:40:13 +00:00
Bruce Evans
b97fc94873 Use [u]intptr_t instead of [unsigned] long to convert and/or represent
pointers.

This finishes fixing conversions between pointers and integers of
possibly different sizes in GENERIC.
1998-08-10 17:21:49 +00:00
Bruce Evans
c1087c1324 Support compiling with `gcc -ansi'. 1998-04-15 17:47:40 +00:00
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