536 lines
24 KiB
Plaintext
536 lines
24 KiB
Plaintext
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Stallion Multiport Serial Driver Readme
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---------------------------------------
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Version: 0.0.5 alpha
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Date: 20MAR96
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Author: Greg Ungerer (gerg@stallion.oz.au)
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1. INTRODUCTION
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This is a FreeBSD driver for some of the Stallion Technologies range of
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multiport serial boards. This driver is still very new, so it should be
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considered to be of very alpha quality.
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This driver has not been developed by Stallion Technologies. I developed it
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in my spare time in the hope that it would be useful. As such there is no
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warranty or support of any form. What this means is that this driver is not
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officially supported by Stallion Technologies, so don't ring their support
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if you can't get it working. They will probably not be able to help you.
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Instead email me if you have problems or bug reports and I will do what I
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can... (Sorry to sound so heavy handed, but I need to stress that this driver
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is not officially supported in any way.)
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This package actually contains two drivers. One is for the true Stallion
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intelligent multiport boards, and the other is for the smart range of boards.
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All host driver source is included in this package, and is copyrighted under
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a BSD style copyright. The board "firmware" code in this package is copyright
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Stallion Technologies (the files cdk.sys and 2681.sys).
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1.1 SMART MULTIPORT BOARD DRIVER
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This driver supports the EasyIO and EasyConnection 8/32 range of boards.
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These boards are not classic intelligent multiport boards, but are host
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based multiport boards that use high performance Cirrus Logic CL-CD1400 RISC
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UART's (they have built in FIFO's, automatic flow control and some other
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good stuff).
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The EasyIO range of cards comes in 3 forms, the EasyIO-4, EasyIO-8 and the
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EasyIO-8M. All of these are non-expandable, low cost, ISA, multiport boards
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with 4, 8 and 8 RS-232C ports respectively. Each EasyIO board requires 8
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bytes of I/O address space and 1 interrupt. On an EISA system it is possible
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to share 1 interrupt between multiple boards. The EasyIO-4 has 10 pin RJ
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connectors, and the EasyIO-8 comes with a dongle cable with either 10 pin RJ
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connectors or DB-25 connectors. The EasyIO-8M has 6 pin RJ connectors.
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The EasyConnection 8/32 family of boards is a relatively low cost modular
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range of multiport serial boards. The EasyConnection 8/32 boards can be
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configured to have from 8 to 32 serial ports by plugging in external serial
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port modules that contain either 8 or 16 ports each. There is a wide range
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of external modules available that offer: DB-25 connectors, RJ-45 connectors
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(both with RS-232 D and E compatible drivers), and also RS-422 and RS-485
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ports. The EasyConnection 8/32 boards come in ISA, PCI and MCA bus versions.
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The board takes the form of a host adapter card, with an external connector
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cable that plugs into the external modules. The external modules just clip
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together to add ports (BTW, they are NOT hot pluggable). Each ISA
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EasyConnection 8/32 board requires two separate I/O address ranges, one two
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bytes in size and a secondary region of 32 bytes. Each PCI EasyConnection
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8/32 requires two regions of I/O address space, normally these will be
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automatically allocated by the system BIOS at system power on time. Each MCA
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EasyConnection board requires one I/O address region 64 bytes in size. All
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board types also require one interrupt. On EISA systems multiple boards can
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share one interrupt. The secondary I/O range of the ISA board (the 32 byte
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range) can be shared between multiple boards on any bus type.
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1.2 INTELLIGENT MULTIPORT BOARD DRIVER
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This driver is for Stallion's range of true intelligent multiport boards.
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It supports the EasyConnection 8/64, ONboard, Brumby and original Stallion
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families of multiport boards. The EasyConnection 8/64 and ONboard boards come
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in ISA, EISA and Microchannel bus versions. The Brumby and Stallion boards
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are only available in ISA versions.
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The EasyConnection 8/64 family of boards is a medium cost, high performance,
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modular range of intelligent multiport serial boards. The EasyConnection 8/64
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boards can be configured to have from 8 to 64 serial ports by plugging in
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external serial port modules that contain either 8 or 16 ports each (these
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modules are the same used by the EasyConnection 8/32 board). There is a wide
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range of external modules available that offer: DB-25 connectors, RJ-45
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connectors (both with RS-232 D and E compatible drivers), and also RS-422 and
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RS-485 ports. The board takes the form of a host adapter card, with an external
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connector cable that plugs into the external modules. The external modules
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just clip together to add ports (BTW, they are NOT hot pluggable). Each
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EasyConnection 8/64 board requires 4 bytes of I/O address space and a region
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of memory space. The size of the memory region required depends on the exact
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board type. The EISA version requires 64 Kbytes of address space (that can
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reside anywhere in the 4 Gigabyte physical address space). The ISA and MCA
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boards require 4 Kbytes of address space (which must reside in the lower
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1 Mbyte of physical address space - typically in the c8000 to e0000 range).
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No interrupts are required. The physical memory region of multiple
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EasyConnection 8/64 boards can be shared, but each board must have a separate
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I/O address space.
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The ONboard family of boards are traditional intelligent multiport serial
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boards. They are Stallion's older range of boards with a limited expansion
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capability. They come in 4, 8, 12, 16 and 32 port versions. The board uses
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the same base card (which has 4 ports on it) and is expanded to more ports
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via a mezzanine board that attaches directly onto the board. External panels
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plug into the ONboard providing RS-232C ports with DB-25 plugs. An RS-422
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DB-25 dual interface panel is also available. The ISA and microchannel
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ONboards require 16 bytes of I/O address space and 64K bytes of memory
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space. The memory space can be anywhere in the 16 Mbyte ISA bus address
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range. No interrupt is required. The EISA ONboard requires 64 Kbytes of
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memory space that can be anywhere in the 4 Gigabyte physical address space.
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All ONboard boards can share their memory region with other ONboards (or
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EasyConnection 8/64 boards).
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The Brumby family of boards are traditional, low cost intelligent multiport
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serial boards. They are non-expandable and come in 4, 8 and 16 port versions.
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They are only available for the ISA bus. The serial ports are all on DB-25
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"dongle" cables that attach to the rear of the board. Each Brumby board
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requires 16 bytes of I/O address space and 16 Kbytes of memory space. No
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interrupts are required.
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The original Stallion boards are old. They went out of production some years
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back. They offer limited expandability and are available in 8 or 16 port
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configurations. An external panel houses 16 RS-232C ports with DB-9
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connectors. They require 16 bytes of I/O address space, and either 64K or
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128K of memory space. No interrupt is required. I will not actively support
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these boards, although they will work with the driver.
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That's the boards supported by the second driver. The ONboard, Brumby and
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Stallion boards are Stallion's older range of intelligent multiports - so
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there are lots of them around. They only support a maximum baud rate of
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38400. The EasyConnection 8/64 is a true high performance intelligent
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multiport board, having much greater throughput than any of Stallion's
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older boards. It also supports speeds up to 115200 baud.
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1.3 HOW TO GET BOARDS
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Stallion Technologies has offices all over the world, as well as many more
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distributors and resellers. To find out about local availability please
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contact the nearest Stallion office and they can give you all the information
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you need.
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Stallion Technologies Sales and Support Offices
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===============================================
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Stallion Technologies Pty. Ltd.
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P.O. Box 954
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Toowong, QLD 4066, Australia
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Tel. +61 7 3270 4242
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Fax. +61 7 3270 4245
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Email: support@stallion.oz.au
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Stallion Technologies Inc.
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2880 Research Park Drive,
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Soquel, CA 95073, USA.
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Tel. +1 408 477 0440
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Fax. +1 408 477 0444
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Email: support@staltec.com
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Stallion Technologies Deutschland GmbH.
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Martin-Behaim-Strasse 12
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63263 Neu-Isenburg
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Germany
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Tel. +49 6102 73970
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Fax. +49 6102 739710
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Another good source of information about the Stallion range of boards and
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local availability is on the Stallion Web page. Check it out at
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http://www.stallion.com.
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2. INSTALLATION
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This driver, as is, will work on a FreeBSD 2.1 system. It will run on
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a 2.0.5 system, or -current version systems by changing a define in the
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driver source.
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You will need to build a new kernel to use this driver. So the first thing
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you need is to have the full kernel source. Most people will have this
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(I hope!). The following assumes that the kernel source is in /usr/src/sys.
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The drivers can support up to 8 boards. For the smart board driver any
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combination of EasyIO and EasyConnection 8/32 boards can be installed. For
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the intelligent any combination of EasyConnection 8/64, ONboard, Brumby or
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original Stallion. So there is a theoretical maximum of 512 ports.
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(Off-course I have not tested a system with this many!)
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[[[ The install instructions are obsolete, it is now standard ]]]
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[[[ Skip forward to item 4, editing your kernel config file ]]]
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2.1 Instructions to install:
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1. Copy the driver source files into the kernel source tree.
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cp stallion.c istallion.c cdk.h comstats.h /usr/src/sys/i386/isa
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cp scd1400.h /usr/src/sys/i386/isa/ic
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Note: if you are NOT using FreeBSD 2.1.0 then you will need to edit the
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stallion.c and istallion.c files and change the VFREEBSD define to match
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your version.
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2. Skip to next step if on a FreeBSD kernel later than 2.1.0.
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Add a character device switch table entry for the driver that you which
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to use into the cdevsw table structure. This involves adding some code
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into the kernel conf.c file.
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If you are using an EasyIO or EasyConnection 8/32 then you need to use
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the stallion.c driver. All other board types (EasyConnection 8/64,
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ONboard, Brumby, Stallion) use the istallion.c driver. You can also have
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a mix of boards using both drivers. You will need to use a different
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major device number for the second driver though (not the default 72 -
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see below for more details on this).
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2.1. If using the stallion.c driver then do:
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cd /usr/src/sys/i386/i386
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vi conf.c
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- add the following lines (in 2.1 I put them at line 729):
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/* Stallion Multiport Serial Driver */
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#include "stl.h"
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#if NSTL > 0
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d_open_t stlopen;
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d_close_t stlclose;
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d_read_t stlread;
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d_write_t stlwrite;
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d_ioctl_t stlioctl;
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d_stop_t stlstop;
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d_ttycv_t stldevtotty;
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#define stlreset nxreset
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#define stlmmap nxmmap
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#define stlstrategy nxstrategy
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#else
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#define stlopen nxopen
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#define stlclose nxclose
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#define stlread nxread
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#define stlwrite nxwrite
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#define stlioctl nxioctl
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#define stlstop nxstop
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#define stlreset nxreset
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#define stlmmap nxmmap
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#define stlstrategy nxstrategy
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#define stldevtotty nxdevtotty
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#endif
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- and then inside the actual cdevsw structure definition, at the
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last entry add (this is now line 1384 in the 2.1 conf.c):
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{ stlopen, stlclose, stlread, stlwrite, /*72*/
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stlioctl, stlstop, stlreset, stldevtotty,/*stallion*/
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ttselect, stlmmap, stlstrategy },
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- the line above used major number 72, but this may be different
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on your system. Take note of what major number you are using.
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- save the file and exit vi.
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2.2. If using the istallion.c driver then do:
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cd /usr/src/sys/i386/i386
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vi conf.c
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- add the following lines (in 2.1 I put them at line 729):
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/* Stallion Intelligent Multiport Serial Driver */
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#include "stl.h"
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#if NSTL > 0
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d_open_t stliopen;
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d_close_t stliclose;
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d_read_t stliread;
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d_write_t stliwrite;
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d_ioctl_t stliioctl;
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d_stop_t stlistop;
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d_ttycv_t stlidevtotty;
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#define stlireset nxreset
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#define stlimmap nxmmap
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#define stlistrategy nxstrategy
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#else
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#define stliopen nxopen
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#define stliclose nxclose
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#define stliread nxread
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#define stliwrite nxwrite
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#define stliioctl nxioctl
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#define stlistop nxstop
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#define stlireset nxreset
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#define stlimmap nxmmap
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#define stlistrategy nxstrategy
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#define stlidevtotty nxdevtotty
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#endif
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- and then inside the actual cdevsw structure definition, at the
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last entry add (this is now line 1384 in the 2.1 conf.c):
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{ stliopen, stliclose, stliread, stliwrite, /*72*/
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stliioctl, stlistop, stlireset, stlidevtotty,/*istallion*/
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ttselect, stlimmap, stlistrategy },
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- the line above used major number 72, but this may be different
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on your system. Take note of what major number you are using.
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- save the file and exit vi.
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3. Add the driver source files to the kernel files list:
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cd /usr/src/sys/i386/conf
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vi files.i386
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- add the following definition lines into the list (it is stored
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alphabetically, so insert them appropriately):
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i386/isa/istallion.c optional stli device-driver
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i386/isa/stallion.c optional stl device-driver
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- save the file and exit vi.
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4. Add board probe entries into the kernel configuration file:
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cd /usr/src/sys/i386/conf
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cp GENERIC MYKERNEL
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- if you already have a kernel config that you use then you
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could just use that (instead of MYKERNEL)
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vi MYKERNEL
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- if only using ECH-PCI boards then you don't need to enter a
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configuration line, the kernel will automatically detect
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the board at boot up, so skip to step 5.
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- enter a line for each board that you want to use. For stallion.c
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boards entries should look like:
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device stl0 at isa? port 0x2a0 tty irq 10
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For istallion.c boards, the entries should look like:
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device stli0 at isa? port 0x2a0 tty iomem 0xcc000 iosiz 0x1000 flags 23
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(I suggest you put them after the sio? entries)
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(Don't enter lines for ECH-PCI boards)
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- change the entry resources as required. For the Stallion.c
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entries this may involve changing the port address or irq.
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For the istallion.c entries this may involve changing the port
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address, iomem address, iosiz value and the flags. Select from
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the following table for appropriate flags and iosiz values for
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your board type:
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EasyConnection 8/64 ISA: flags 23 iosiz 0x1000
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EasyConnection 8/64 EISA: flags 24 iosiz 0x10000
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EasyConnection 8/64 MCA: flags 25 iosiz 0x1000
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ONboard ISA: flags 4 iosiz 0x10000
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ONboard EISA: flags 7 iosiz 0x10000
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ONboard MCA: flags 3 iosiz 0x10000
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Brumby: flags 2 iosiz 0x4000
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Stallion: flags 1 iosiz 0x10000
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- save the file and exit
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5. Build a new kernel using this configuration.
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cd /usr/src/sys/i386/conf
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config MYKERNEL
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cd ../../compile/MYKERNEL
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make depend
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make all
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make install
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And there you have it! It is a little bit of effort to get it in there...
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Once you have a new kernel built reboot to start it up. On startup the
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Stallion board probes will report on whether the boards were found or not.
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For each board found the driver will print out the type of board found,
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and how many panels and ports it has.
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If a board is not found by the driver but is actually in the system then the
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most likely problem is that the IO address is incorrect. The easiest thing to
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do is change the DIP switches on the board to the desired address and reboot.
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On EasyIO and EasyConnection 8/32 boards the IRQ is software programmable,
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so if there is a conflict you may need to change the IRQ used for a board in
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the MYKERNEL configuration file and rebuild the kernel.
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Note that the secondary IO address of the EasyConnection 8/32 boards is hard
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coded into the stallion.c driver code. It is currently set to IO address
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0x280. If you need to use a different address then you will need to edit this
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file and change the variable named stl_ioshared.
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On intelligent boards it is possible that the board shared memory region is
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clashing with that of some other device. Check for this and change the device
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or kernel configuration as required.
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2.2 INTELLIGENT DRIVER OPERATION
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The intelligent boards also need to have their "firmware" code downloaded
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to them. This is done via a user level application supplied in the driver
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package called "stlload". Compile this program where ever you dropped the
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package files, by typing "make". In its simplest form you can then type
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./stlload -i cdk.sys
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in this directory and that will download board 0 (assuming board 0 is an
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EasyConnection 8/64 board). To download to an ONboard, Brumby or Stallion do:
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./stlload -i 2681.sys
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Normally you would want all boards to be downloaded as part of the standard
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system startup. To achieve this, add one of the lines above into the
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/etc/rc.serial file. To download each board just add the "-b <brd-number>"
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option to the line. You will need to download code for every board. You should
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probably move the stlload program into a system directory, such as /usr/sbin.
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Also, the default location of the cdk.sys image file in the stlload
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down-loader is /usr/lib/stallion. Create that directory and put the cdk.sys
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and 2681.sys files in it. (It's a convenient place to put them anyway). As an
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example your /etc/rc.serial file might have the following lines added to it
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(if you had 3 boards):
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/usr/sbin/stlload -b 0 -i /usr/lib/stallion/cdk.sys
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/usr/sbin/stlload -b 1 -i /usr/lib/stallion/2681.sys
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/usr/sbin/stlload -b 2 -i /usr/lib/stallion/2681.sys
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The image files cdk.sys and 2681.sys are specific to the board types. The
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cdk.sys will only function correctly on an EasyConnection 8/64 board. Similarly
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the 2681.sys image will only operate on ONboard, Brumby and Stallion boards.
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If you load the wrong image file into a board it will fail to start up, and
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of course the ports will not be operational!
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3. USING THE DRIVER
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Once the driver is installed you will need to setup some device nodes to
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access the serial ports. Use the supplied "mkdevnods" script to automatically
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create all required device entries for your boards. To make device nodes for
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more than 1 board then just supply the number of boards you are using as a
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command line parameter to mkdevnods and it will create nodes for that number
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of boards. By default it will create device nodes for 1 board only.
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Note that if the driver is not installed at character major number 72 then
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you will need to edit the mkdevnods script and modify the STL_SERIALMAJOR
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variable to the major number you are using.
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Device nodes created for the normal serial port devices are named /dev/ttyEX
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where X is the port number. (The second boards ports will start from ttyE64,
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the third boards from ttyE128, etc). It will also create a set of modem call
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out devices named cueX where again X is the port number.
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For the most part the Stallion driver tries to emulate the standard PC system
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com ports and the standard sio serial driver. The idea is that you should
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be able to use Stallion board ports and com ports inter-changeably without
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modifying anything but the device name. Anything that doesn't work like that
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should be considered a bug in this driver!
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|
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Since this driver tries to emulate the standard serial ports as much as
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|
possible then most system utilities should work as they do for the standard
|
|
com ports. Most importantly "stty" works as expected and "comcontrol" can be
|
|
used just like for the serial ports.
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|
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|
This driver should work with anything that works on standard com serial ports.
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|
Having said that, I have used it on at least the following types of "things"
|
|
under FreeBSD:
|
|
a) standard dumb terminals (using getty)
|
|
b) modems (using cu, etc)
|
|
c) ppp (through pppd, kernel ppp)
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|
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4. NOTES
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|
|
|
Be aware that these drivers are still very new, so there is sure to be some
|
|
bugs in them. Please email me any feedback on bugs, problems, or even good
|
|
experiences with these drivers!
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|
|
|
You can use both drivers at once if you have a mix of board types installed
|
|
in a system. However to do this you will need to change the major number used
|
|
by one of the drivers. Currently both drivers use default major number 72 for
|
|
their devices. Change one driver to use some other major number (how this is
|
|
achieved will depend on the kernel version you are using), and then modify the
|
|
mkdevnods script to make device nodes based on those new major numbers. For
|
|
example, you could change the stallion.c driver to use major number 73. You
|
|
will also need to create device nodes with different names for the ports, for
|
|
eg ttyFXXX.
|
|
|
|
Currently the intelligent board driver (istallion.c) does not have the
|
|
ability to share a boards memory region with other boards (you can only do
|
|
this on EasyConnection 8/64 and ONboards normally anyway). It also does
|
|
not currently support any memory address ranges above the low 1Mb region.
|
|
These will be fixed in a future release of the driver.
|
|
|
|
Finding a free physical memory address range can be a problem. The older
|
|
boards like the Stallion and ONboard need large areas (64K or even 128K), so
|
|
they can be very difficult to get into a system. If you have 16 Mb of RAM
|
|
then you have no choice but to put them somewhere in the 640K -> 1Mb range.
|
|
ONboards require 64K, so typically 0xd0000 is good, or 0xe0000 on some
|
|
systems. If you have an original Stallion board, "V4.0" or Rev.O, then you
|
|
need a 64K memory address space, so again 0xd0000 and 0xe0000 are good. Older
|
|
Stallion boards are a much bigger problem. They need 128K of address space and
|
|
must be on a 128K boundary. If you don't have a VGA card then 0xc0000 might be
|
|
usable - there is really no other place you can put them below 1Mb.
|
|
|
|
Both the ONboard and old Stallion boards can use higher memory addresses as
|
|
well, but you must have less than 16Mb of RAM to be able to use them. Usual
|
|
high memory addresses used include 0xec0000 and 0xf00000.
|
|
|
|
The Brumby boards only require 16Kb of address space, so you can usually
|
|
squeeze them in somewhere. Common addresses are 0xc8000, 0xcc000, or in
|
|
the 0xd0000 range. EasyConnection 8/64 boards are even better, they only
|
|
require 4Kb of address space, again usually 0xc8000, 0xcc000 or 0xd0000
|
|
are good.
|
|
|
|
If you are using an EasyConnection 8/64-EI or ONboard/E then usually the
|
|
0xd0000 or 0xe0000 ranges are the best options below 1Mb. If neither of
|
|
them can be used then the high memory support to use the really high address
|
|
ranges is the best option. Typically the 2Gb range is convenient for them,
|
|
and gets them well out of the way.
|
|
|
|
The ports of the EasyIO-8M board do not have DCD or DTR signals. So these
|
|
ports cannot be used as real modem devices. Generally when using these
|
|
ports you should only use the cueX devices.
|
|
|
|
There is a new utility in this package that reports statistics on the
|
|
serial ports. You will need to have the ncurses library installed on your
|
|
system to build it.
|
|
|
|
To build the statistics display program type:
|
|
make stlstats
|
|
Once compiled simply run it (you will need to be root) and it will display
|
|
a port summary for the first board and panel installed. Use the digits to
|
|
select different board numbers, or 'n' to cycle through the panels on a
|
|
board. To look at detailed port information then hit 'p', that will display
|
|
detailed port 0 information. Use the digits and letters 'a' through 'f' to
|
|
select the different ports (on this board and panel).
|
|
|
|
|
|
|
|
5. ACKNOWLEDGEMENTS
|
|
|
|
This driver is loosely based on the code of the FreeBSD sio serial driver.
|
|
A big thanks to Stallion Technologies for the use of their equipment.
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|
|