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diff --git a/Documentation/s390/3270.txt b/Documentation/s390/3270.txt deleted file mode 100644 index 7c715de99774..000000000000 --- a/Documentation/s390/3270.txt +++ /dev/null @@ -1,271 +0,0 @@ -IBM 3270 Display System support - -This file describes the driver that supports local channel attachment -of IBM 3270 devices. It consists of three sections: - * Introduction - * Installation - * Operation - - -INTRODUCTION. - -This paper describes installing and operating 3270 devices under -Linux/390. A 3270 device is a block-mode rows-and-columns terminal of -which I'm sure hundreds of millions were sold by IBM and clonemakers -twenty and thirty years ago. - -You may have 3270s in-house and not know it. If you're using the -VM-ESA operating system, define a 3270 to your virtual machine by using -the command "DEF GRAF <hex-address>" This paper presumes you will be -defining four 3270s with the CP/CMS commands - - DEF GRAF 620 - DEF GRAF 621 - DEF GRAF 622 - DEF GRAF 623 - -Your network connection from VM-ESA allows you to use x3270, tn3270, or -another 3270 emulator, started from an xterm window on your PC or -workstation. With the DEF GRAF command, an application such as xterm, -and this Linux-390 3270 driver, you have another way of talking to your -Linux box. - -This paper covers installation of the driver and operation of a -dialed-in x3270. - - -INSTALLATION. - -You install the driver by installing a patch, doing a kernel build, and -running the configuration script (config3270.sh, in this directory). - -WARNING: If you are using 3270 console support, you must rerun the -configuration script every time you change the console's address (perhaps -by using the condev= parameter in silo's /boot/parmfile). More precisely, -you should rerun the configuration script every time your set of 3270s, -including the console 3270, changes subchannel identifier relative to -one another. ReIPL as soon as possible after running the configuration -script and the resulting /tmp/mkdev3270. - -If you have chosen to make tub3270 a module, you add a line to a -configuration file under /etc/modprobe.d/. If you are working on a VM -virtual machine, you can use DEF GRAF to define virtual 3270 devices. - -You may generate both 3270 and 3215 console support, or one or the -other, or neither. If you generate both, the console type under VM is -not changed. Use #CP Q TERM to see what the current console type is. -Use #CP TERM CONMODE 3270 to change it to 3270. If you generate only -3270 console support, then the driver automatically converts your console -at boot time to a 3270 if it is a 3215. - -In brief, these are the steps: - 1. Install the tub3270 patch - 2. (If a module) add a line to a file in /etc/modprobe.d/*.conf - 3. (If VM) define devices with DEF GRAF - 4. Reboot - 5. Configure - -To test that everything works, assuming VM and x3270, - 1. Bring up an x3270 window. - 2. Use the DIAL command in that window. - 3. You should immediately see a Linux login screen. - -Here are the installation steps in detail: - - 1. The 3270 driver is a part of the official Linux kernel - source. Build a tree with the kernel source and any necessary - patches. Then do - make oldconfig - (If you wish to disable 3215 console support, edit - .config; change CONFIG_TN3215's value to "n"; - and rerun "make oldconfig".) - make image - make modules - make modules_install - - 2. (Perform this step only if you have configured tub3270 as a - module.) Add a line to a file /etc/modprobe.d/*.conf to automatically - load the driver when it's needed. With this line added, you will see - login prompts appear on your 3270s as soon as boot is complete (or - with emulated 3270s, as soon as you dial into your vm guest using the - command "DIAL <vmguestname>"). Since the line-mode major number is - 227, the line to add should be: - alias char-major-227 tub3270 - - 3. Define graphic devices to your vm guest machine, if you - haven't already. Define them before you reboot (reipl): - DEFINE GRAF 620 - DEFINE GRAF 621 - DEFINE GRAF 622 - DEFINE GRAF 623 - - 4. Reboot. The reboot process scans hardware devices, including - 3270s, and this enables the tub3270 driver once loaded to respond - correctly to the configuration requests of the next step. If - you have chosen 3270 console support, your console now behaves - as a 3270, not a 3215. - - 5. Run the 3270 configuration script config3270. It is - distributed in this same directory, Documentation/s390, as - config3270.sh. Inspect the output script it produces, - /tmp/mkdev3270, and then run that script. This will create the - necessary character special device files and make the necessary - changes to /etc/inittab. - - Then notify /sbin/init that /etc/inittab has changed, by issuing - the telinit command with the q operand: - cd Documentation/s390 - sh config3270.sh - sh /tmp/mkdev3270 - telinit q - - This should be sufficient for your first time. If your 3270 - configuration has changed and you're reusing config3270, you - should follow these steps: - Change 3270 configuration - Reboot - Run config3270 and /tmp/mkdev3270 - Reboot - -Here are the testing steps in detail: - - 1. Bring up an x3270 window, or use an actual hardware 3278 or - 3279, or use the 3270 emulator of your choice. You would be - running the emulator on your PC or workstation. You would use - the command, for example, - x3270 vm-esa-domain-name & - if you wanted a 3278 Model 4 with 43 rows of 80 columns, the - default model number. The driver does not take advantage of - extended attributes. - - The screen you should now see contains a VM logo with input - lines near the bottom. Use TAB to move to the bottom line, - probably labeled "COMMAND ===>". - - 2. Use the DIAL command instead of the LOGIN command to connect - to one of the virtual 3270s you defined with the DEF GRAF - commands: - dial my-vm-guest-name - - 3. You should immediately see a login prompt from your - Linux-390 operating system. If that does not happen, you would - see instead the line "DIALED TO my-vm-guest-name 0620". - - To troubleshoot: do these things. - - A. Is the driver loaded? Use the lsmod command (no operands) - to find out. Probably it isn't. Try loading it manually, with - the command "insmod tub3270". Does that command give error - messages? Ha! There's your problem. - - B. Is the /etc/inittab file modified as in installation step 3 - above? Use the grep command to find out; for instance, issue - "grep 3270 /etc/inittab". Nothing found? There's your - problem! - - C. Are the device special files created, as in installation - step 2 above? Use the ls -l command to find out; for instance, - issue "ls -l /dev/3270/tty620". The output should start with the - letter "c" meaning character device and should contain "227, 1" - just to the left of the device name. No such file? no "c"? - Wrong major number? Wrong minor number? There's your - problem! - - D. Do you get the message - "HCPDIA047E my-vm-guest-name 0620 does not exist"? - If so, you must issue the command "DEF GRAF 620" from your VM - 3215 console and then reboot the system. - - - -OPERATION. - -The driver defines three areas on the 3270 screen: the log area, the -input area, and the status area. - -The log area takes up all but the bottom two lines of the screen. The -driver writes terminal output to it, starting at the top line and going -down. When it fills, the status area changes from "Linux Running" to -"Linux More...". After a scrolling timeout of (default) 5 sec, the -screen clears and more output is written, from the top down. - -The input area extends from the beginning of the second-to-last screen -line to the start of the status area. You type commands in this area -and hit ENTER to execute them. - -The status area initializes to "Linux Running" to give you a warm -fuzzy feeling. When the log area fills up and output awaits, it -changes to "Linux More...". At this time you can do several things or -nothing. If you do nothing, the screen will clear in (default) 5 sec -and more output will appear. You may hit ENTER with nothing typed in -the input area to toggle between "Linux More..." and "Linux Holding", -which indicates no scrolling will occur. (If you hit ENTER with "Linux -Running" and nothing typed, the application receives a newline.) - -You may change the scrolling timeout value. For example, the following -command line: - echo scrolltime=60 > /proc/tty/driver/tty3270 -changes the scrolling timeout value to 60 sec. Set scrolltime to 0 if -you wish to prevent scrolling entirely. - -Other things you may do when the log area fills up are: hit PA2 to -clear the log area and write more output to it, or hit CLEAR to clear -the log area and the input area and write more output to the log area. - -Some of the Program Function (PF) and Program Attention (PA) keys are -preassigned special functions. The ones that are not yield an alarm -when pressed. - -PA1 causes a SIGINT to the currently running application. You may do -the same thing from the input area, by typing "^C" and hitting ENTER. - -PA2 causes the log area to be cleared. If output awaits, it is then -written to the log area. - -PF3 causes an EOF to be received as input by the application. You may -cause an EOF also by typing "^D" and hitting ENTER. - -No PF key is preassigned to cause a job suspension, but you may cause a -job suspension by typing "^Z" and hitting ENTER. You may wish to -assign this function to a PF key. To make PF7 cause job suspension, -execute the command: - echo pf7=^z > /proc/tty/driver/tty3270 - -If the input you type does not end with the two characters "^n", the -driver appends a newline character and sends it to the tty driver; -otherwise the driver strips the "^n" and does not append a newline. -The IBM 3215 driver behaves similarly. - -Pf10 causes the most recent command to be retrieved from the tube's -command stack (default depth 20) and displayed in the input area. You -may hit PF10 again for the next-most-recent command, and so on. A -command is entered into the stack only when the input area is not made -invisible (such as for password entry) and it is not identical to the -current top entry. PF10 rotates backward through the command stack; -PF11 rotates forward. You may assign the backward function to any PF -key (or PA key, for that matter), say, PA3, with the command: - echo -e pa3=\\033k > /proc/tty/driver/tty3270 -This assigns the string ESC-k to PA3. Similarly, the string ESC-j -performs the forward function. (Rationale: In bash with vi-mode line -editing, ESC-k and ESC-j retrieve backward and forward history. -Suggestions welcome.) - -Is a stack size of twenty commands not to your liking? Change it on -the fly. To change to saving the last 100 commands, execute the -command: - echo recallsize=100 > /proc/tty/driver/tty3270 - -Have a command you issue frequently? Assign it to a PF or PA key! Use -the command - echo pf24="mkdir foobar; cd foobar" > /proc/tty/driver/tty3270 -to execute the commands mkdir foobar and cd foobar immediately when you -hit PF24. Want to see the command line first, before you execute it? -Use the -n option of the echo command: - echo -n pf24="mkdir foo; cd foo" > /proc/tty/driver/tty3270 - - - -Happy testing! I welcome any and all comments about this document, the -driver, etc etc. - -Dick Hitt <rbh00@utsglobal.com> |