Commit Graph

56 Commits

Author SHA1 Message Date
jkim
9a0c25fb11 Fix style nits. No md5 changes in .o's. ;-) 2006-09-08 21:46:01 +00:00
jkim
c025122efb Enhanced floppy controllers have Data Rate Select Register (DSR) at 0x3f4.
Use it to reset controller and to select data rate.  According to Intel
80277AA datasheet, software reset behaves the same as DOR reset except
that it is self clearing.  National Semiconductor PC8477B datasheet says
the same.  As a side effect, we no longer use Configuration Control
Register (CCR) at 0x3f7 for these controllers, which is often missing
in modern hardware.
2006-07-06 21:12:18 +00:00
benno
30977bc35b Allow uart(4)'s ns8250 driver to work with devices whose regshift is > 0.
- Rename REG_DL to REG_DLL and REG_DLH.
- Always treat DLL and DLH as two separate 8-bit registers instead of one
  16-bit register.

Additionally, remove the probe for the high 4 bits of IER being 0 and don't
assume we can always read/write 0 to/from those bits.

These changes allow uart(4) to drive the UARTs on the Intel XScale PXA255.

Reviewed by:	marcel
2006-05-23 00:41:12 +00:00
marcel
2be5755c77 MFp4:
Add CHAN_A & CHAN_B for channel register offsets.
While here, fix a comment.
2006-02-24 02:03:35 +00:00
grehan
dc0d8adae4 Register definitions for the ancient via6522. This 20+ year-old chip
still exists as a cell in the Macio asic on Apples, and is used to communicate
through the shift register with the external PMU microcontroller.
2005-12-02 22:36:14 +00:00
glebius
d972137502 Typo.
PR:		misc/87679
Submitted by:	Alan Amesbury <amesbury umn.edu>
2005-10-23 09:05:51 +00:00
nyan
492af7c5f3 cosmetic change. 2005-05-14 10:26:31 +00:00
nyan
7d8da118c1 - Move bus dependent defines to {isa,cbus}_dmareg.h.
- Use isa/isareg.h rather than <arch>/isa/isa.h.

Tested on: i386, pc98
2005-05-14 10:14:56 +00:00
nyan
99f1b22233 - Move timerreg.h to <arch>/include and split i8253 specific defines into
i8253reg.h, and add some defines to control a speaker.
- Move PPI related defines from i386/isa/spkr.c into ppireg.h and use them.
- Move IO_{PPI,TIMER} defines into ppireg.h and timerreg.h respectively.
- Use isa/isareg.h rather than <arch>/isa/isa.h.

Tested on: i386, pc98
2005-05-14 09:10:02 +00:00
phk
749e4957d9 Since we are quite unlikely to ever face another platform which
uses the i8237 without trying to emulate the PC architecture move
the register definitions for the i8237 chip into the central include
file for the chip, except for the PC98 case which is magic.

Add new isa_dmatc() function which tells us as cheaply as possible
if the terminal count has been reached for a given channel.
2005-02-06 13:46:39 +00:00
imp
4b319958e7 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
marcel
1fa26ac061 This file was repocopied from sys/dev/uart/uart_dev_z8530.h. 2004-11-21 01:34:15 +00:00
marcel
725f195a21 This file was repocopied from sys/dev/uart/uart_dev_sab82532.h. 2004-11-21 01:33:39 +00:00
marcel
b27f556929 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
imp
b49b7fe799 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
jhb
9703cb885d 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
bde
acd7337940 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
bde
3adfe066d6 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
bde
8e297afbfa 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
bde
aef56c1fd0 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
bde
38de5dc3ec 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
6efc7b093d 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
mdodd
c8027bafcc - 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
phk
6d7819a5d4 Move the com_scr register address definition over with the other seven.
Approved by:	bde
2002-09-22 08:51:31 +00:00
joerg
4e774e7f02 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
nyan
182f190f23 Moved the wd33c93 specific file to sys/dev/ic. 2001-06-14 11:05:48 +00:00
nyan
7f01a14750 Move the files from i386/isa/ic/ to dev/ic/. 2001-06-10 04:28:39 +00:00
nyan
10d5355359 Added ESP98 specific register (merged from i386/isa/ic/esp.h). 2001-06-10 04:20:37 +00:00
nyan
de6f911577 Removed unneeded pc98 code (merged from i386/isa/ic/ns16550.h). 2001-06-10 04:18:19 +00:00
peter
22f6069a2a Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
peter
3b842d34e8 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
bde
fb65619358 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
bde
54f96be976 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
bde
d09c7eccb2 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
bde
b598f559b2 Support compiling with `gcc -ansi'. 1998-04-15 17:47:40 +00:00
tegge
dc9fb72147 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
94b6d72794 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
jkh
808a36ef65 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
jhay
bb0c2ab1ba A #define really don't need a ; at the end. 1996-10-28 19:35:37 +00:00
asami
eb29d43f47 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
f5f9b2ee23 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
bde
a82695f60f Oops, this should have been committed with the other Hayes ESP changes. 1995-12-29 13:18:58 +00:00
peter
f83677214f 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
bde
618bbe9fb0 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
phk
9ee584cede Cleanup, make things static. 1995-10-31 18:41:49 +00:00
bde
5cca7ebf45 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
ache
38b4136817 Next version, many bugs fixed 1995-06-14 19:37:02 +00:00
rgrimes
c86f0c7a71 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
ache
be6ee7ba3e RISCom/8 driver 1995-05-12 15:09:29 +00:00
jkh
e0092e86d6 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